updated changeling

Return the available height instead of 0

CHANGELOG.md

@@ -1,166 +1,541 @@
-# Changelog
+# Change Log
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.7.0">2.7.1</a>
-#### 08/04/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/77">#77</a>.
+## [Unreleased](https://github.com/Jawbone/JBChartView/tree/HEAD)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.7.0">2.7.0</a>
-#### 08/02/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/76">#76</a>.
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.14...HEAD)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.6.3">2.6.3</a>
-#### 07/31/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/75">#75</a>.
+**Implemented enhancements:**
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.6.2">2.6.2</a>
-#### 07/25/14
-- Added new controller (JBAreaChartViewController) to demonstrate area charts.
+- Suggestion for the README.md [\#176](https://github.com/Jawbone/JBChartView/issues/176)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.6.1">2.6.1</a>
-#### 07/25/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/74">#74</a>.
+**Fixed bugs:**
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.6.0">2.6.0</a>
-#### 07/24/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/71">#71</a>.
+- Line color overlap issue [\#168](https://github.com/Jawbone/JBChartView/issues/168)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.5.5">2.5.5</a>
-#### 05/13/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/57">#57</a>.
+**Closed issues:**
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.5.4">2.5.4</a>
-#### 05/07/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/53">#53</a>.
+- JBLineChart reloadData problem [\#181](https://github.com/Jawbone/JBChartView/issues/181)
+- JBLineChartView: wrong width on iPhone6/6+ [\#177](https://github.com/Jawbone/JBChartView/issues/177)
+- Is there anyway to plot two vertical values for one horizontal index in the bar chart? [\#172](https://github.com/Jawbone/JBChartView/issues/172)
+- Charts not rendering properly [\#171](https://github.com/Jawbone/JBChartView/issues/171)
+- How can you set the bar chart to fill the width of a UIView? [\#170](https://github.com/Jawbone/JBChartView/issues/170)
+- Adding X and Y Values [\#169](https://github.com/Jawbone/JBChartView/issues/169)
+- Undefined symbols for architecture i386 [\#167](https://github.com/Jawbone/JBChartView/issues/167)
+- Not All Data Points Visible in Flexible View [\#166](https://github.com/Jawbone/JBChartView/issues/166)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.5.3">2.5.3</a>
-#### 05/06/14
-- More compiler warning fixes.
+**Merged pull requests:**
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.5.2">2.5.2</a> 
-#### 05/06/14
-- Fixed compiler warnings. 
+- Return the available height instead of 0 [\#183](https://github.com/Jawbone/JBChartView/pull/183) ([0xPr0xy](https://github.com/0xPr0xy))
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.5.1">2.5.1</a> 
-#### 05/05/14
-- Additional fixes to issue <a href="https://github.com/Jawbone/JBChartView/pull/48">#48</a>.
+## [v2.8.14](https://github.com/Jawbone/JBChartView/tree/v2.8.14) (2015-04-30)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.13...v2.8.14)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.5.0">2.5.0</a> 
-#### 05/04/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/48">#48</a>.
+**Closed issues:**
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.4.3">2.4.3</a> 
-#### 05/04/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/49">#49</a>.
+- Will JBChartView integrated with React Native? [\#164](https://github.com/Jawbone/JBChartView/issues/164)
+- white dot+dotted lines sometimes does not appear when touched. [\#161](https://github.com/Jawbone/JBChartView/issues/161)
+- Small offset when using a footer for a x-axis [\#160](https://github.com/Jawbone/JBChartView/issues/160)
+- gradient for bar chart is lost / sizing problem [\#158](https://github.com/Jawbone/JBChartView/issues/158)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.4.2">2.4.2</a> 
-#### 04/30/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/46">#46</a>.
+**Merged pull requests:**
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.4.1">2.4.1</a> 
-#### 04/30/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/45">#45</a>.
+- Nil out delegate and datasource on dealloc [\#165](https://github.com/Jawbone/JBChartView/pull/165) ([eventualbuddha](https://github.com/eventualbuddha))
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.4.0">2.4.0</a> 
-#### 04/28/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/23">#23</a>.
+## [v2.8.13](https://github.com/Jawbone/JBChartView/tree/v2.8.13) (2015-04-16)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.12...v2.8.13)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.3.0">2.3.0</a> 
-#### 04/17/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/34">#34</a>.
- 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.2.0">2.2.0</a> 
-#### 04/14/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/37">#37</a>.
+**Fixed bugs:**
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.1.6">2.1.6</a> 
-#### 04/11/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/33">#33</a>.
- 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.1.5">2.1.5</a> 
-#### 04/10/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/30">#30</a>.
+- Wrong calculation of the lineIndex  [\#157](https://github.com/Jawbone/JBChartView/issues/157)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.1.4">2.1.4</a> 
-#### 04/10/14
-- Added ability to specify a radius for dotted lines. 
+**Closed issues:**
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.1.3">2.1.3</a> 
-#### 04/03/14
-- Added the ability to force a chart's state. 
+- Swift round up for respondsToSelector\(\) and sizeWithFont\(\) [\#156](https://github.com/Jawbone/JBChartView/issues/156)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.1.2">2.1.2</a> 
-#### 04/02/14
-- Added dynamic padding to JBLineChartView (based on max line width).
+## [v2.8.12](https://github.com/Jawbone/JBChartView/tree/v2.8.12) (2015-04-13)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.11...v2.8.12)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.1.1">2.1.1</a> 
-#### 04/02/14
-- Fixed minimumValue and maximumValue getter functions.
+**Fixed bugs:**
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.1.0">2.1.0</a> 
-#### 03/30/14
-- Added minimumValue and maximumValue properties. 
-- Changed default min value implementation from 0 to chart's actual minimum value.
+- Footer and Header view Swift implementation [\#152](https://github.com/Jawbone/JBChartView/issues/152)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.0.2">2.0.2</a> 
-#### 03/27/14
-- Added the ability to add point dots for lines in JBLineChartView.
-- Streamlined line styling. 
+**Closed issues:**
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.0.1">2.0.1</a> 
-#### 03/19/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/22">#22</a>.
+- Problems with selection when JBLineChartView is within UITableView [\#155](https://github.com/Jawbone/JBChartView/issues/155)
+- Show chart selection permanently [\#151](https://github.com/Jawbone/JBChartView/issues/151)
+- Crash when returning NAN [\#150](https://github.com/Jawbone/JBChartView/issues/150)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v2.0.0">2.0.0</a> 
-#### 03/18/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/21">#21</a>.
-- Added multi-line support for JBLineChartView.
-- Added position delegation on touch events. 
-- Added tooltip views (demo-only).
+**Merged pull requests:**
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v1.1.6">1.1.6</a>
-#### 03/02/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/15">#15</a>.
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/14">#14</a>.
+- Fix warnings when building w/ Xcode 6.3 [\#154](https://github.com/Jawbone/JBChartView/pull/154) ([amro](https://github.com/amro))
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v1.1.5">1.1.5</a>
-#### 02/11/14
-- Chart selection improvements.
-- Animation performance improvements. 
+## [v2.8.11](https://github.com/Jawbone/JBChartView/tree/v2.8.11) (2015-03-31)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.10...v2.8.11)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v1.1.4">1.1.4</a>
-#### 02/06/14
-- Fixed compilation warnings.
+**Implemented enhancements:**
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v1.1.3">1.1.3</a>
-#### 01/06/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/11">#11</a>.
+- Pass back barView & dot instances on selection [\#118](https://github.com/Jawbone/JBChartView/issues/118)
+- Add ability to have the line start or end at any given point [\#115](https://github.com/Jawbone/JBChartView/issues/115)
+- Consolidate dot view selection/unselection/color calls [\#101](https://github.com/Jawbone/JBChartView/issues/101)
+- Change dot radius to dot diameter [\#99](https://github.com/Jawbone/JBChartView/issues/99)
+- need Swift implementation details and example [\#80](https://github.com/Jawbone/JBChartView/issues/80)
+- Add bar/line caching for only visible content.  [\#61](https://github.com/Jawbone/JBChartView/issues/61)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v1.1.2">1.1.2</a>
-#### 01/03/14
-- Added CGFloat support for chart heights intead of integers. 
+**Closed issues:**
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v1.1.1">1.1.1</a>
-#### 01/02/14
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/7">#7</a>.
+- Pie Chart support [\#149](https://github.com/Jawbone/JBChartView/issues/149)
+- hi is it possible to have x,y value because in example there is no y value and only 2 x value [\#141](https://github.com/Jawbone/JBChartView/issues/141)
+- imports without pods [\#140](https://github.com/Jawbone/JBChartView/issues/140)
+- How can I group Bars? [\#139](https://github.com/Jawbone/JBChartView/issues/139)
+- request: AreaChart - fillColorForLineAtLineIndex - add custom color for a specific X axis range [\#137](https://github.com/Jawbone/JBChartView/issues/137)
+- smallest value is shown as a blank bar [\#136](https://github.com/Jawbone/JBChartView/issues/136)
+- Is there any way I can use JBBarChartView as horizontal bars? [\#135](https://github.com/Jawbone/JBChartView/issues/135)
+- Multiple colors to a line graph [\#134](https://github.com/Jawbone/JBChartView/issues/134)
+- Overriding - \(void\)barChartView:\(JBBarChartView \*\)barChartView didSelectBarAtIndex:\(NSUInteger\)index  is not showing selection view? [\#133](https://github.com/Jawbone/JBChartView/issues/133)
+- Exception thrown on setState: [\#132](https://github.com/Jawbone/JBChartView/issues/132)
+- X and Y scale and reference values [\#131](https://github.com/Jawbone/JBChartView/issues/131)
+- Determine x-value of a certain point by a number instead of it's index in the input array? [\#130](https://github.com/Jawbone/JBChartView/issues/130)
+- How to accomplish similar didUnselectBarChartView [\#129](https://github.com/Jawbone/JBChartView/issues/129)
+- Is posible - scroll chart [\#126](https://github.com/Jawbone/JBChartView/issues/126)
+- Crash when vertical value for horizontal at index x less than zero [\#125](https://github.com/Jawbone/JBChartView/issues/125)
+- JBBarChartView does not display all the bars [\#124](https://github.com/Jawbone/JBChartView/issues/124)
+- "automatically normalized across the entire chart" [\#123](https://github.com/Jawbone/JBChartView/issues/123)
+- reloadData in viewDidLayoutSubviews does not trigger didDeselectLineInLineChartView on first selection [\#122](https://github.com/Jawbone/JBChartView/issues/122)
+- Question [\#121](https://github.com/Jawbone/JBChartView/issues/121)
+- Sublayers not properly resized [\#120](https://github.com/Jawbone/JBChartView/issues/120)
+- It will be really cool if "while on tap on line charts dots I can get the dot object do some scale animation" or something? [\#119](https://github.com/Jawbone/JBChartView/issues/119)
+- Is there any way I can pass new bar view while user selects particular bar? [\#117](https://github.com/Jawbone/JBChartView/issues/117)
+- Typo error in README [\#114](https://github.com/Jawbone/JBChartView/issues/114)
+- Dynamic/append values [\#113](https://github.com/Jawbone/JBChartView/issues/113)
+- It needs better documentation [\#112](https://github.com/Jawbone/JBChartView/issues/112)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v1.1.0">1.1.0</a>
-#### 12/26/13
-- Updated JBBarChartView datasource to request UIView subclasses for bars. 
+**Merged pull requests:**
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v1.0.3">1.0.3</a>
-#### 12/23/13
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/4">#4</a>.
+- Keep tooltip subviews above line subviews [\#144](https://github.com/Jawbone/JBChartView/pull/144) ([vocaro](https://github.com/vocaro))
+- Fix crash and warnings that can occur when a chart line has no data [\#143](https://github.com/Jawbone/JBChartView/pull/143) ([vocaro](https://github.com/vocaro))
+- Add automatically generated change log file. [\#142](https://github.com/Jawbone/JBChartView/pull/142) ([skywinder](https://github.com/skywinder))
+- Update README.md [\#127](https://github.com/Jawbone/JBChartView/pull/127) ([paal123](https://github.com/paal123))
+- Add ability to have the line start or end at any given point [\#116](https://github.com/Jawbone/JBChartView/pull/116) ([sebastianreloaded](https://github.com/sebastianreloaded))
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v1.0.2">1.0.2</a>
-#### 12/17/13
-- Additional fixes for issue <a href="https://github.com/Jawbone/JBChartView/pull/2">#2</a>.
+## [v2.8.10](https://github.com/Jawbone/JBChartView/tree/v2.8.10) (2014-09-23)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.9...v2.8.10)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v1.0.1">1.0.1</a>
-#### (12/14/13)
-- Fixes issue <a href="https://github.com/Jawbone/JBChartView/pull/2">#2</a>.
+## [v2.8.9](https://github.com/Jawbone/JBChartView/tree/v2.8.9) (2014-09-22)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.8...v2.8.9)
 
-## <a href="https://github.com/Jawbone/JBChartView/tree/v1.0">1.0</a>
-#### 12/10/13
-- Initial public release.
-- Base line and bar charts.
-- Basic customization; color, positioning, selections.
+**Closed issues:**
+
+- JBLineChartView doesn't resize its subviews [\#111](https://github.com/Jawbone/JBChartView/issues/111)
+
+## [v2.8.8](https://github.com/Jawbone/JBChartView/tree/v2.8.8) (2014-09-20)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.7...v2.8.8)
+
+**Fixed bugs:**
+
+- iOS 8 warnings [\#110](https://github.com/Jawbone/JBChartView/issues/110)
+
+**Closed issues:**
+
+- Noob level tutorial [\#109](https://github.com/Jawbone/JBChartView/issues/109)
+- Data points with uneavenly distributed x-values? [\#108](https://github.com/Jawbone/JBChartView/issues/108)
+
+## [v2.8.7](https://github.com/Jawbone/JBChartView/tree/v2.8.7) (2014-09-09)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.6...v2.8.7)
+
+**Implemented enhancements:**
+
+- Add hide custom dot functionality [\#100](https://github.com/Jawbone/JBChartView/issues/100)
+- Add footer padding [\#98](https://github.com/Jawbone/JBChartView/issues/98)
+- DotView is hidden when inside selected table view cell [\#82](https://github.com/Jawbone/JBChartView/issues/82)
+
+**Closed issues:**
+
+- There should be flexibility to change to touch point to nearest data point so vertical selection view just jumps from one data point to another in JBLineChartView. [\#105](https://github.com/Jawbone/JBChartView/issues/105)
+- barWidth Method and  barPadding property should be in JBBarChartView header file. [\#104](https://github.com/Jawbone/JBChartView/issues/104)
+- Why minimum and maximum should be positive? [\#102](https://github.com/Jawbone/JBChartView/issues/102)
+
+**Merged pull requests:**
+
+- iOS Framework Support [\#107](https://github.com/Jawbone/JBChartView/pull/107) ([thefirstnikhil](https://github.com/thefirstnikhil))
+- Only call `numberOfLinesInLineChartView:` once per loop. [\#106](https://github.com/Jawbone/JBChartView/pull/106) ([eventualbuddha](https://github.com/eventualbuddha))
+
+## [v2.8.6](https://github.com/Jawbone/JBChartView/tree/v2.8.6) (2014-08-29)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.5...v2.8.6)
+
+## [v2.8.5](https://github.com/Jawbone/JBChartView/tree/v2.8.5) (2014-08-28)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.4...v2.8.5)
+
+**Implemented enhancements:**
+
+- Invert option for bar charts [\#97](https://github.com/Jawbone/JBChartView/issues/97)
+
+## [v2.8.4](https://github.com/Jawbone/JBChartView/tree/v2.8.4) (2014-08-27)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.3...v2.8.4)
+
+## [v2.8.3](https://github.com/Jawbone/JBChartView/tree/v2.8.3) (2014-08-26)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.2...v2.8.3)
+
+**Implemented enhancements:**
+
+- return type of barPaddingForBarChartView: [\#93](https://github.com/Jawbone/JBChartView/issues/93)
+- Custom dot functionality [\#92](https://github.com/Jawbone/JBChartView/issues/92)
+
+## [v2.8.2](https://github.com/Jawbone/JBChartView/tree/v2.8.2) (2014-08-26)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.1...v2.8.2)
+
+**Fixed bugs:**
+
+- Selection view width should equal bar width [\#96](https://github.com/Jawbone/JBChartView/issues/96)
+
+**Closed issues:**
+
+- Changing dot radius in dotRadiusForLineAtLineIndex has no effect [\#95](https://github.com/Jawbone/JBChartView/issues/95)
+
+## [v2.8.1](https://github.com/Jawbone/JBChartView/tree/v2.8.1) (2014-08-23)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.8.0...v2.8.1)
+
+## [v2.8.0](https://github.com/Jawbone/JBChartView/tree/v2.8.0) (2014-08-15)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.7.4...v2.8.0)
+
+**Closed issues:**
+
+- Don't bring selection view to front with line view [\#89](https://github.com/Jawbone/JBChartView/issues/89)
+
+**Merged pull requests:**
+
+- Add per-line vertical selection color support. [\#90](https://github.com/Jawbone/JBChartView/pull/90) ([mszaro](https://github.com/mszaro))
+
+## [v2.7.4](https://github.com/Jawbone/JBChartView/tree/v2.7.4) (2014-08-15)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.7.3...v2.7.4)
+
+**Implemented enhancements:**
+
+- Not able to create Y-Axis labels or background grid [\#20](https://github.com/Jawbone/JBChartView/issues/20)
+
+**Closed issues:**
+
+- \[Enhancement\] Provide an option to disable Y-axis normalization for line graphs [\#88](https://github.com/Jawbone/JBChartView/issues/88)
+- Add left padding to the graph for y-axis labels [\#87](https://github.com/Jawbone/JBChartView/issues/87)
+- Error Protocol not implemented [\#86](https://github.com/Jawbone/JBChartView/issues/86)
+- What if I want to animate the LineChartView progression? [\#85](https://github.com/Jawbone/JBChartView/issues/85)
+- Enabling smooth lines in line chart view results in line graph clipping \(Out of bounds\)? [\#83](https://github.com/Jawbone/JBChartView/issues/83)
+
+## [v2.7.3](https://github.com/Jawbone/JBChartView/tree/v2.7.3) (2014-08-07)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.7.2...v2.7.3)
+
+**Closed issues:**
+
+- Can I animate bar charts? [\#79](https://github.com/Jawbone/JBChartView/issues/79)
+- Create generic dataSource and delegate for extensibility.  [\#78](https://github.com/Jawbone/JBChartView/issues/78)
+
+## [v2.7.2](https://github.com/Jawbone/JBChartView/tree/v2.7.2) (2014-08-04)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.7.1...v2.7.2)
+
+## [v2.7.1](https://github.com/Jawbone/JBChartView/tree/v2.7.1) (2014-08-04)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.7.0...v2.7.1)
+
+**Closed issues:**
+
+- Typo in JBBarChartView.h [\#77](https://github.com/Jawbone/JBChartView/issues/77)
+- Refactor datasource and delegate functions [\#76](https://github.com/Jawbone/JBChartView/issues/76)
+
+## [v2.7.0](https://github.com/Jawbone/JBChartView/tree/v2.7.0) (2014-08-02)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.6.3...v2.7.0)
+
+**Closed issues:**
+
+- Incorrect padding on line widths [\#75](https://github.com/Jawbone/JBChartView/issues/75)
+
+## [v2.6.3](https://github.com/Jawbone/JBChartView/tree/v2.6.3) (2014-07-31)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.6.2...v2.6.3)
+
+## [v2.6.2](https://github.com/Jawbone/JBChartView/tree/v2.6.2) (2014-07-25)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.6.1...v2.6.2)
+
+## [v2.6.1](https://github.com/Jawbone/JBChartView/tree/v2.6.1) (2014-07-25)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.6.0...v2.6.1)
+
+**Merged pull requests:**
+
+- iOS 6 support [\#74](https://github.com/Jawbone/JBChartView/pull/74) ([luosheng](https://github.com/luosheng))
+
+## [v2.6.0](https://github.com/Jawbone/JBChartView/tree/v2.6.0) (2014-07-24)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.5.5...v2.6.0)
+
+**Closed issues:**
+
+- Allow setting views for lines as well as bars [\#73](https://github.com/Jawbone/JBChartView/issues/73)
+- Requires iOS 7 or later [\#72](https://github.com/Jawbone/JBChartView/issues/72)
+- How to Know the x,width of each bar [\#70](https://github.com/Jawbone/JBChartView/issues/70)
+- Multiple y-axis [\#69](https://github.com/Jawbone/JBChartView/issues/69)
+- NSInternalInconsistencyException - JBLineChartView // dataSource must implement [\#68](https://github.com/Jawbone/JBChartView/issues/68)
+- Zoom and scrolling? \(Question\) [\#65](https://github.com/Jawbone/JBChartView/issues/65)
+- Support for missing data points rather than going to 0? [\#63](https://github.com/Jawbone/JBChartView/issues/63)
+- Interesting behavior 'barViewAtIndex' and 'colorForBarViewAtIndex'. [\#62](https://github.com/Jawbone/JBChartView/issues/62)
+- In LineChart x-axis, splits into more numbers and not able view x-axis last point [\#60](https://github.com/Jawbone/JBChartView/issues/60)
+- Overlay more than 1 chart? [\#59](https://github.com/Jawbone/JBChartView/issues/59)
+- Footer Views - Can they be perpendicular to the x-axis [\#58](https://github.com/Jawbone/JBChartView/issues/58)
+
+**Merged pull requests:**
+
+- Fill Color on Line Chart [\#71](https://github.com/Jawbone/JBChartView/pull/71) ([legranddamien](https://github.com/legranddamien))
+- Added documentation for usage in a Swift project [\#67](https://github.com/Jawbone/JBChartView/pull/67) ([jonparker](https://github.com/jonparker))
+
+## [v2.5.5](https://github.com/Jawbone/JBChartView/tree/v2.5.5) (2014-05-14)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.5.4...v2.5.5)
+
+**Implemented enhancements:**
+
+- Ability to draw lines with negative values [\#51](https://github.com/Jawbone/JBChartView/issues/51)
+
+**Closed issues:**
+
+- How to adjust selected bar height for LineChart in demo project [\#56](https://github.com/Jawbone/JBChartView/issues/56)
+- Line Chart Collapse Animation Changed? [\#54](https://github.com/Jawbone/JBChartView/issues/54)
+
+**Merged pull requests:**
+
+- Fixed barView's frame. [\#57](https://github.com/Jawbone/JBChartView/pull/57) ([pala](https://github.com/pala))
+- Update sample code in readme [\#55](https://github.com/Jawbone/JBChartView/pull/55) ([pala](https://github.com/pala))
+
+## [v2.5.4](https://github.com/Jawbone/JBChartView/tree/v2.5.4) (2014-05-07)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.5.3...v2.5.4)
+
+**Merged pull requests:**
+
+- Add delegate method barChartView:colorForBarViewAtIndex: to JBBarChartViewDataSource [\#53](https://github.com/Jawbone/JBChartView/pull/53) ([skywinder](https://github.com/skywinder))
+- Compiling warrnings and typos [\#52](https://github.com/Jawbone/JBChartView/pull/52) ([skywinder](https://github.com/skywinder))
+
+## [v2.5.3](https://github.com/Jawbone/JBChartView/tree/v2.5.3) (2014-05-06)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.5.2...v2.5.3)
+
+## [v2.5.2](https://github.com/Jawbone/JBChartView/tree/v2.5.2) (2014-05-06)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.5.1...v2.5.2)
+
+## [v2.5.1](https://github.com/Jawbone/JBChartView/tree/v2.5.1) (2014-05-05)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.5.0...v2.5.1)
+
+**Closed issues:**
+
+- non-evenly distributed plots [\#50](https://github.com/Jawbone/JBChartView/issues/50)
+- Using minimum of 0 as default [\#48](https://github.com/Jawbone/JBChartView/issues/48)
+
+## [v2.5.0](https://github.com/Jawbone/JBChartView/tree/v2.5.0) (2014-05-04)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.4.3...v2.5.0)
+
+## [v2.4.3](https://github.com/Jawbone/JBChartView/tree/v2.4.3) (2014-05-04)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.4.2...v2.4.3)
+
+**Closed issues:**
+
+- Bars not drawn when all have the same height [\#47](https://github.com/Jawbone/JBChartView/issues/47)
+- Moving podspec to root [\#46](https://github.com/Jawbone/JBChartView/issues/46)
+
+**Merged pull requests:**
+
+- fixed typo, renamed mininum -\> minimum [\#49](https://github.com/Jawbone/JBChartView/pull/49) ([simonnickel](https://github.com/simonnickel))
+
+## [v2.4.2](https://github.com/Jawbone/JBChartView/tree/v2.4.2) (2014-05-01)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.4.1...v2.4.2)
+
+## [v2.4.1](https://github.com/Jawbone/JBChartView/tree/v2.4.1) (2014-04-30)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.4.0...v2.4.1)
+
+**Implemented enhancements:**
+
+- Curved line charts [\#23](https://github.com/Jawbone/JBChartView/issues/23)
+
+**Closed issues:**
+
+- JBChartView demo footerview problem [\#44](https://github.com/Jawbone/JBChartView/issues/44)
+
+**Merged pull requests:**
+
+- Smooth curve fix [\#45](https://github.com/Jawbone/JBChartView/pull/45) ([ktran03](https://github.com/ktran03))
+
+## [v2.4.0](https://github.com/Jawbone/JBChartView/tree/v2.4.0) (2014-04-28)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.3.0...v2.4.0)
+
+**Closed issues:**
+
+- Aligning X-axis, padding? [\#43](https://github.com/Jawbone/JBChartView/issues/43)
+- `JBLineChartFooterView` Value Marks are Inaccurate [\#41](https://github.com/Jawbone/JBChartView/issues/41)
+
+**Merged pull requests:**
+
+- smooth curve using bezierpath [\#39](https://github.com/Jawbone/JBChartView/pull/39) ([ktran03](https://github.com/ktran03))
+
+## [v2.3.0](https://github.com/Jawbone/JBChartView/tree/v2.3.0) (2014-04-18)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.2.0...v2.3.0)
+
+**Closed issues:**
+
+- Crash, lineChartView "must implement numberOfPointsInLineChartView" ? [\#38](https://github.com/Jawbone/JBChartView/issues/38)
+
+## [v2.2.0](https://github.com/Jawbone/JBChartView/tree/v2.2.0) (2014-04-14)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.1.6...v2.2.0)
+
+**Closed issues:**
+
+- Typo in readme? [\#36](https://github.com/Jawbone/JBChartView/issues/36)
+- Nav bar background remains black [\#35](https://github.com/Jawbone/JBChartView/issues/35)
+
+**Merged pull requests:**
+
+- Added delegate method to configure the width of the vertical selection bar in a line chart. [\#37](https://github.com/Jawbone/JBChartView/pull/37) ([ghost](https://github.com/ghost))
+
+## [v2.1.6](https://github.com/Jawbone/JBChartView/tree/v2.1.6) (2014-04-11)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.1.5...v2.1.6)
+
+**Closed issues:**
+
+- `showsLineSelection` Does Nothing [\#33](https://github.com/Jawbone/JBChartView/issues/33)
+- cocoapods [\#31](https://github.com/Jawbone/JBChartView/issues/31)
+
+## [v2.1.5](https://github.com/Jawbone/JBChartView/tree/v2.1.5) (2014-04-10)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.1.4...v2.1.5)
+
+**Merged pull requests:**
+
+- JBChartView: needs initWithCoder initializer for inflation from a xib [\#30](https://github.com/Jawbone/JBChartView/pull/30) ([gumbypp](https://github.com/gumbypp))
+
+## [v2.1.4](https://github.com/Jawbone/JBChartView/tree/v2.1.4) (2014-04-10)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.1.3...v2.1.4)
+
+**Closed issues:**
+
+- Stach bars? [\#29](https://github.com/Jawbone/JBChartView/issues/29)
+- Problem with Bar Height [\#28](https://github.com/Jawbone/JBChartView/issues/28)
+- Selection does not work without Auto Layout in iPhone 3.5" [\#27](https://github.com/Jawbone/JBChartView/issues/27)
+
+## [v2.1.3](https://github.com/Jawbone/JBChartView/tree/v2.1.3) (2014-04-03)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.1.2...v2.1.3)
+
+## [v2.1.2](https://github.com/Jawbone/JBChartView/tree/v2.1.2) (2014-04-02)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.1.1...v2.1.2)
+
+## [v2.1.1](https://github.com/Jawbone/JBChartView/tree/v2.1.1) (2014-04-02)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.1.0...v2.1.1)
+
+**Closed issues:**
+
+- representing negative values [\#26](https://github.com/Jawbone/JBChartView/issues/26)
+- Real time [\#25](https://github.com/Jawbone/JBChartView/issues/25)
+
+## [v2.1.0](https://github.com/Jawbone/JBChartView/tree/v2.1.0) (2014-03-31)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.0.2...v2.1.0)
+
+## [v2.0.2](https://github.com/Jawbone/JBChartView/tree/v2.0.2) (2014-03-27)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.0.1...v2.0.2)
+
+**Closed issues:**
+
+- Negative Bars? [\#24](https://github.com/Jawbone/JBChartView/issues/24)
+
+## [v2.0.1](https://github.com/Jawbone/JBChartView/tree/v2.0.1) (2014-03-19)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v2.0.0...v2.0.1)
+
+**Closed issues:**
+
+- NSAssert on bar height in JBBarChartView, \> 0 when it should be \>= [\#22](https://github.com/Jawbone/JBChartView/issues/22)
+
+## [v2.0.0](https://github.com/Jawbone/JBChartView/tree/v2.0.0) (2014-03-19)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v1.1.6...v2.0.0)
+
+**Implemented enhancements:**
+
+- Multiple Lines on chart [\#6](https://github.com/Jawbone/JBChartView/issues/6)
+
+**Closed issues:**
+
+- JBBarChartView Bar Height Problem With Storyboard/Autolayout [\#19](https://github.com/Jawbone/JBChartView/issues/19)
+- blank result [\#18](https://github.com/Jawbone/JBChartView/issues/18)
+- Bar Highlight Offset Issue [\#17](https://github.com/Jawbone/JBChartView/issues/17)
+- Following the tutorial creates an empty/blank view  [\#16](https://github.com/Jawbone/JBChartView/issues/16)
+
+**Merged pull requests:**
+
+- Multiple Line Support & Tooltips [\#21](https://github.com/Jawbone/JBChartView/pull/21) ([terryworona](https://github.com/terryworona))
+
+## [v1.1.6](https://github.com/Jawbone/JBChartView/tree/v1.1.6) (2014-03-03)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v1.1.5...v1.1.6)
+
+**Merged pull requests:**
+
+- Added customization for line width [\#15](https://github.com/Jawbone/JBChartView/pull/15) ([kmcbride](https://github.com/kmcbride))
+- fix spelling mistake [\#14](https://github.com/Jawbone/JBChartView/pull/14) ([Undo1](https://github.com/Undo1))
+
+## [v1.1.5](https://github.com/Jawbone/JBChartView/tree/v1.1.5) (2014-02-12)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v1.1.4...v1.1.5)
+
+## [v1.1.4](https://github.com/Jawbone/JBChartView/tree/v1.1.4) (2014-02-06)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v1.1.3...v1.1.4)
+
+**Closed issues:**
+
+- What about ios6 [\#13](https://github.com/Jawbone/JBChartView/issues/13)
+- Could the Bar Chart data be nil ? [\#12](https://github.com/Jawbone/JBChartView/issues/12)
+
+## [v1.1.3](https://github.com/Jawbone/JBChartView/tree/v1.1.3) (2014-01-06)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v1.1.2...v1.1.3)
+
+**Closed issues:**
+
+- heightForIndex should return CGFloat instead of NSInteger [\#9](https://github.com/Jawbone/JBChartView/issues/9)
+
+**Merged pull requests:**
+
+- Fixes small typos in README [\#11](https://github.com/Jawbone/JBChartView/pull/11) ([sampage](https://github.com/sampage))
+
+## [v1.1.2](https://github.com/Jawbone/JBChartView/tree/v1.1.2) (2014-01-03)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v1.1.1...v1.1.2)
+
+## [v1.1.1](https://github.com/Jawbone/JBChartView/tree/v1.1.1) (2014-01-02)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v1.1.0...v1.1.1)
+
+**Closed issues:**
+
+- reloadData is not reducing height of other bars [\#7](https://github.com/Jawbone/JBChartView/issues/7)
+- Add barViewAtIndex: to datasource [\#5](https://github.com/Jawbone/JBChartView/issues/5)
+
+**Merged pull requests:**
+
+- Reset cached max height on data reload Fixes \#7 [\#8](https://github.com/Jawbone/JBChartView/pull/8) ([l4u](https://github.com/l4u))
+
+## [v1.1.0](https://github.com/Jawbone/JBChartView/tree/v1.1.0) (2013-12-26)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v1.0.3...v1.1.0)
+
+## [v1.0.3](https://github.com/Jawbone/JBChartView/tree/v1.0.3) (2013-12-23)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v1.0.2...v1.0.3)
+
+**Closed issues:**
+
+- Single press on bar [\#3](https://github.com/Jawbone/JBChartView/issues/3)
+
+## [v1.0.2](https://github.com/Jawbone/JBChartView/tree/v1.0.2) (2013-12-17)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v1.0.1...v1.0.2)
+
+## [v1.0.1](https://github.com/Jawbone/JBChartView/tree/v1.0.1) (2013-12-15)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/v1.0...v1.0.1)
+
+**Merged pull requests:**
+
+- If there is no footer view, bars won't be added to the chart. [\#2](https://github.com/Jawbone/JBChartView/pull/2) ([joelkraut](https://github.com/joelkraut))
+
+## [v1.0](https://github.com/Jawbone/JBChartView/tree/v1.0) (2013-12-11)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/0.2.0...v1.0)
+
+**Merged pull requests:**
+
+- JBChartViewDemo and JBChartView [\#1](https://github.com/Jawbone/JBChartView/pull/1) ([terryworona](https://github.com/terryworona))
+
+## [0.2.0](https://github.com/Jawbone/JBChartView/tree/0.2.0) (2013-08-20)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/1.0...0.2.0)
+
+## [1.0](https://github.com/Jawbone/JBChartView/tree/1.0) (2012-04-23)
+[Full Changelog](https://github.com/Jawbone/JBChartView/compare/1.0.0...1.0)
+
+## [1.0.0](https://github.com/Jawbone/JBChartView/tree/1.0.0) (2012-04-23)
+
+
+\* *This Change Log was automatically generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*

Classes/JBBarChartView.h

@@ -9,24 +9,9 @@
 // Views
 #import "JBChartView.h"
 
-@protocol JBBarChartViewDataSource;
-@protocol JBBarChartViewDelegate;
+@class JBBarChartView;
 
-@interface JBBarChartView : JBChartView
-
-@property (nonatomic, weak) id<JBBarChartViewDataSource> dataSource;
-@property (nonatomic, weak) id<JBBarChartViewDelegate> delegate;
-
-/**
- *  Vertical highlight overlayed on bar during touch events.
- *
- *  Default: YES.
- */
-@property (nonatomic, assign) BOOL showsVerticalSelection;
-
-@end
-
-@protocol JBBarChartViewDataSource <NSObject>
+@protocol JBBarChartViewDataSource <JBChartViewDataSource>
 
 @required
 
@@ -55,12 +40,12 @@
 
 @end
 
-@protocol JBBarChartViewDelegate <NSObject>
+@protocol JBBarChartViewDelegate <JBChartViewDelegate>
 
 @required
 
 /**
- *  Height for a bar at a given index (left to right). There is no ceiling on the the height; 
+ *  Height for a bar at a given index (left to right). There is no ceiling on the the height;
  *  the chart will automatically normalize all values between the overal min and max heights.
  *
  *  @param barChartView     The bar chart object requesting this information.
@@ -126,6 +111,40 @@
  *
  *  @return Horizontal width (in pixels) between each bar.
  */
-- (NSUInteger)barPaddingForBarChartView:(JBBarChartView *)barChartView;
+- (CGFloat)barPaddingForBarChartView:(JBBarChartView *)barChartView;
+
+@end
+
+@interface JBBarChartView : JBChartView
+
+@property (nonatomic, weak) id<JBBarChartViewDataSource> dataSource;
+@property (nonatomic, weak) id<JBBarChartViewDelegate> delegate;
+
+/**
+ *  Vertical highlight overlayed on bar during touch events.
+ *
+ *  Default: YES.
+ */
+@property (nonatomic, assign) BOOL showsVerticalSelection;
+
+/*
+ *  Bars can be (vertically) positoned top to bottom instead of bottom up.
+ *  If this property is set to YES, both the bar and the selection view will be inverted.
+ *  For the inverted orientation to take effect, reloadData must be called.
+ *
+ *  Default: NO.
+ */
+@property (nonatomic, assign, getter=isInverted) BOOL inverted;
+
+/**
+ *  The bar view at a particular index.
+ *
+ *  Default: nil.
+ *
+ *  @param index            The 0-based index of a given bar (left to right, x-axis).
+ *
+ *  @return The UIView representing the bar view at a given index or nil if the index is out of range.
+ */
+- (UIView *)barViewAtIndex:(NSUInteger)index;
 
 @end

Classes/JBBarChartView.m

@@ -12,7 +12,7 @@
 CGFloat static const kJBBarChartViewBarBasePaddingMutliplier = 50.0f;
 CGFloat static const kJBBarChartViewUndefinedCachedHeight = -1.0f;
 CGFloat static const kJBBarChartViewStateAnimationDuration = 0.05f;
-CGFloat static const kJBBarChartViewPopOffset = 10.0f; // used to offset bars for 'pop' animations
+CGFloat static const kJBBarChartViewStatePopOffset = 10.0f;
 NSInteger static const kJBBarChartViewUndefinedBarIndex = -1;
 
 // Colors (JBChartView)
@@ -29,6 +29,7 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
 
 @property (nonatomic, strong) NSDictionary *chartDataDictionary; // key = column, value = height
 @property (nonatomic, strong) NSArray *barViews;
+@property (nonatomic, strong) NSArray *cachedBarViewHeights;
 @property (nonatomic, assign) CGFloat barPadding;
 @property (nonatomic, assign) CGFloat cachedMaxHeight;
 @property (nonatomic, assign) CGFloat cachedMinHeight;
@@ -40,9 +41,8 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
 
 // View quick accessors
 - (CGFloat)availableHeight;
-- (CGFloat)normalizedHeightForRawHeight:(NSNumber*)rawHeight;
+- (CGFloat)normalizedHeightForRawHeight:(NSNumber *)rawHeight;
 - (CGFloat)barWidth;
-- (CGFloat)popOffset;
 
 // Touch helpers
 - (NSInteger)barViewIndexForPoint:(CGPoint)point;
@@ -57,6 +57,9 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
 
 @implementation JBBarChartView
 
+@dynamic dataSource;
+@dynamic delegate;
+
 #pragma mark - Alloc/Init
 
 + (void)initialize
@@ -167,9 +170,12 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
             [barView removeFromSuperview];
         }
         
+        self.cachedBarViewHeights = nil;
+        
         CGFloat xOffset = 0;
         NSUInteger index = 0;
         NSMutableArray *mutableBarViews = [NSMutableArray array];
+        NSMutableArray *mutableCachedBarViewHeights = [NSMutableArray array];
         for (NSNumber *key in [[self.chartDataDictionary allKeys] sortedArrayUsingSelector:@selector(compare:)])
         {
             UIView *barView = nil; // since all bars are visible at once, no need to cache this view
@@ -195,11 +201,13 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
 
                 barView.backgroundColor = backgroundColor;
             }
+            
+            barView.tag = index;
 
             CGFloat height = [self normalizedHeightForRawHeight:[self.chartDataDictionary objectForKey:key]];
-            CGFloat extensionHeight = height > 0.0 ? kJBBarChartViewPopOffset : 0.0;
-            barView.frame = CGRectMake(xOffset, self.bounds.size.height - height - self.footerView.frame.size.height, [self barWidth], height + extensionHeight);
+            barView.frame = CGRectMake(xOffset, self.bounds.size.height - height - self.footerView.frame.size.height, [self barWidth], height);
             [mutableBarViews addObject:barView];
+            [mutableCachedBarViewHeights addObject:[NSNumber numberWithFloat:height]];
 			
             // Add new bar
             if (self.footerView)
@@ -215,6 +223,7 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
             index++;
         }
         self.barViews = [NSArray arrayWithArray:mutableBarViews];
+        self.cachedBarViewHeights = [NSArray arrayWithArray:mutableCachedBarViewHeights];
     };
     
     /*
@@ -229,7 +238,25 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
             self.verticalSelectionView = nil;
         }
         
-        self.verticalSelectionView = [[JBChartVerticalSelectionView alloc] initWithFrame:CGRectMake(0, 0, [self barWidth], self.bounds.size.height - self.footerView.frame.size.height)];
+        CGFloat verticalSelectionViewHeight = self.bounds.size.height - self.headerView.frame.size.height - self.footerView.frame.size.height - self.headerPadding - self.footerPadding;
+        
+        if ([self.dataSource respondsToSelector:@selector(shouldExtendSelectionViewIntoHeaderPaddingForChartView:)])
+        {
+            if ([self.dataSource shouldExtendSelectionViewIntoHeaderPaddingForChartView:self])
+            {
+                verticalSelectionViewHeight += self.headerPadding;
+            }
+        }
+        
+        if ([self.dataSource respondsToSelector:@selector(shouldExtendSelectionViewIntoFooterPaddingForChartView:)])
+        {
+            if ([self.dataSource shouldExtendSelectionViewIntoFooterPaddingForChartView:self])
+            {
+                verticalSelectionViewHeight += self.footerPadding;
+            }
+        }
+
+        self.verticalSelectionView = [[JBChartVerticalSelectionView alloc] initWithFrame:CGRectMake(0, 0, [self barWidth], verticalSelectionViewHeight)];
         self.verticalSelectionView.alpha = 0.0;
         self.verticalSelectionView.hidden = !self.showsVerticalSelection;
         if ([self.delegate respondsToSelector:@selector(barSelectionColorForBarChartView:)])
@@ -248,6 +275,8 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
         {
             [self addSubview:self.verticalSelectionView];
         }
+        
+        self.verticalSelectionView.transform = self.inverted ? CGAffineTransformMakeScale(1.0, -1.0) : CGAffineTransformIdentity;
     };
     
     createDataDictionaries();
@@ -267,10 +296,10 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
 
 - (CGFloat)availableHeight
 {
-    return self.bounds.size.height - self.headerView.frame.size.height - self.footerView.frame.size.height - self.headerPadding;
+    return self.bounds.size.height - self.headerView.frame.size.height - self.footerView.frame.size.height - self.headerPadding - self.footerPadding;
 }
 
-- (CGFloat)normalizedHeightForRawHeight:(NSNumber*)rawHeight
+- (CGFloat)normalizedHeightForRawHeight:(NSNumber *)rawHeight
 {
     CGFloat minHeight = [self minimumValue];
     CGFloat maxHeight = [self maximumValue];
@@ -278,7 +307,7 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
     
     if ((maxHeight - minHeight) <= 0)
     {
-        return 0;
+        return [self availableHeight];
     }
     
     return ((value - minHeight) / (maxHeight - minHeight)) * [self availableHeight];
@@ -296,42 +325,85 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
     return 0;
 }
 
-- (CGFloat)popOffset
-{
-    return self.bounds.size.height - self.footerView.frame.size.height;
-}
-
 #pragma mark - Setters
 
 - (void)setState:(JBChartViewState)state animated:(BOOL)animated force:(BOOL)force callback:(void (^)())callback
 {
     [super setState:state animated:animated force:force callback:callback];
     
+    __weak JBBarChartView* weakSelf = self;
+    
+    void (^updateBarView)(UIView *barView, BOOL popBar);
+    
+    updateBarView = ^(UIView *barView, BOOL popBar) {
+        if (weakSelf.inverted)
+        {
+            if (weakSelf.state == JBChartViewStateExpanded)
+            {
+                if (popBar)
+                {
+                    barView.frame = CGRectMake(barView.frame.origin.x, weakSelf.headerView.frame.size.height + weakSelf.headerPadding, barView.frame.size.width, [[weakSelf.cachedBarViewHeights objectAtIndex:barView.tag] floatValue] + kJBBarChartViewStatePopOffset);
+                }
+                else
+                {
+                    barView.frame = CGRectMake(barView.frame.origin.x, weakSelf.headerView.frame.size.height + weakSelf.headerPadding, barView.frame.size.width, [[weakSelf.cachedBarViewHeights objectAtIndex:barView.tag] floatValue]);
+                }
+            }
+            else if (weakSelf.state == JBChartViewStateCollapsed)
+            {
+                if (popBar)
+                {
+                    barView.frame = CGRectMake(barView.frame.origin.x, weakSelf.headerView.frame.size.height + weakSelf.headerPadding, barView.frame.size.width, [[weakSelf.cachedBarViewHeights objectAtIndex:barView.tag] floatValue] + kJBBarChartViewStatePopOffset);
+                }
+                else
+                {
+                    barView.frame = CGRectMake(barView.frame.origin.x, weakSelf.headerView.frame.size.height + weakSelf.headerPadding, barView.frame.size.width, 0.0f);
+                }
+            }
+        }
+        else
+        {
+            if (weakSelf.state == JBChartViewStateExpanded)
+            {
+                if (popBar)
+                {
+                    barView.frame = CGRectMake(barView.frame.origin.x, weakSelf.bounds.size.height - weakSelf.footerView.frame.size.height - weakSelf.footerPadding - [[weakSelf.cachedBarViewHeights objectAtIndex:barView.tag] floatValue] - kJBBarChartViewStatePopOffset, barView.frame.size.width, [[weakSelf.cachedBarViewHeights objectAtIndex:barView.tag] floatValue] + kJBBarChartViewStatePopOffset);
+                }
+                else
+                {
+                    barView.frame = CGRectMake(barView.frame.origin.x, weakSelf.bounds.size.height - weakSelf.footerView.frame.size.height - weakSelf.footerPadding - [[weakSelf.cachedBarViewHeights objectAtIndex:barView.tag] floatValue], barView.frame.size.width, [[weakSelf.cachedBarViewHeights objectAtIndex:barView.tag] floatValue]);
+                }
+            }
+            else if (weakSelf.state == JBChartViewStateCollapsed)
+            {
+                if (popBar)
+                {
+                    barView.frame = CGRectMake(barView.frame.origin.x, weakSelf.bounds.size.height - weakSelf.footerView.frame.size.height - weakSelf.footerPadding - [[weakSelf.cachedBarViewHeights objectAtIndex:barView.tag] floatValue] - kJBBarChartViewStatePopOffset, barView.frame.size.width, [[weakSelf.cachedBarViewHeights objectAtIndex:barView.tag] floatValue] + kJBBarChartViewStatePopOffset);
+                }
+                else
+                {
+                    barView.frame = CGRectMake(barView.frame.origin.x, weakSelf.bounds.size.height, barView.frame.size.width, 0.0f);
+                }
+            }
+        }
+    };
+    
     dispatch_block_t callbackCopy = [callback copy];
     
     if ([self.barViews count] > 0)
     {
         if (animated)
         {
-            CGFloat popOffset = [self popOffset];
-            
             NSUInteger index = 0;
             for (UIView *barView in self.barViews)
             {
                 [UIView animateWithDuration:kJBBarChartViewStateAnimationDuration delay:(kJBBarChartViewStateAnimationDuration * 0.5) * index options:UIViewAnimationOptionBeginFromCurrentState animations:^{
-                    barView.frame = CGRectMake(barView.frame.origin.x, popOffset - barView.frame.size.height, barView.frame.size.width, barView.frame.size.height);
+                    updateBarView(barView, YES);
                 } completion:^(BOOL finished) {
                     [UIView animateWithDuration:kJBBarChartViewStateAnimationDuration delay:0.0 options:UIViewAnimationOptionBeginFromCurrentState animations:^{
-                        if (state == JBChartViewStateExpanded)
-                        {
-                            barView.frame = CGRectMake(barView.frame.origin.x, popOffset - barView.frame.size.height + kJBBarChartViewPopOffset, barView.frame.size.width, barView.frame.size.height);
-                        }
-                        else if (state == JBChartViewStateCollapsed)
-                        {
-                            barView.frame = CGRectMake(barView.frame.origin.x, self.bounds.size.height, barView.frame.size.width, barView.frame.size.height);
-                        }
+                        updateBarView(barView, NO);
                     } completion:^(BOOL lastBarFinished) {
-                        if (index == [self.barViews count] - 1)
+                        if ((NSUInteger)barView.tag == [self.barViews count] - 1)
                         {
                             if (callbackCopy)
                             {
@@ -347,14 +419,7 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
         {
             for (UIView *barView in self.barViews)
             {
-                if (state == JBChartViewStateExpanded)
-                {
-                    barView.frame = CGRectMake(barView.frame.origin.x, (self.bounds.size.height + kJBBarChartViewPopOffset) - (barView.frame.size.height + self.footerView.frame.size.height), barView.frame.size.width, barView.frame.size.height);
-                }
-                else if (state == JBChartViewStateCollapsed)
-                {
-                    barView.frame = CGRectMake(barView.frame.origin.x, self.bounds.size.height, barView.frame.size.width, barView.frame.size.height);
-                }
+                updateBarView(barView, NO);
             }
             if (callbackCopy)
             {
@@ -376,6 +441,33 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
     [self setState:state animated:animated force:NO callback:callback];
 }
 
+- (void)setVerticalSelectionViewVisible:(BOOL)verticalSelectionViewVisible animated:(BOOL)animated
+{
+	_verticalSelectionViewVisible = verticalSelectionViewVisible;
+	
+	if (animated)
+	{
+		[UIView animateWithDuration:kJBChartViewDefaultAnimationDuration delay:0.0 options:UIViewAnimationOptionBeginFromCurrentState animations:^{
+			self.verticalSelectionView.alpha = self.verticalSelectionViewVisible ? 1.0 : 0.0;
+		} completion:nil];
+	}
+	else
+	{
+		self.verticalSelectionView.alpha = _verticalSelectionViewVisible ? 1.0 : 0.0;
+	}
+}
+
+- (void)setVerticalSelectionViewVisible:(BOOL)verticalSelectionViewVisible
+{
+	[self setVerticalSelectionViewVisible:verticalSelectionViewVisible animated:NO];
+}
+
+- (void)setShowsVerticalSelection:(BOOL)showsVerticalSelection
+{
+	_showsVerticalSelection = showsVerticalSelection;
+	self.verticalSelectionView.hidden = _showsVerticalSelection ? NO : YES;
+}
+
 #pragma mark - Getters
 
 - (CGFloat)cachedMinHeight
@@ -416,6 +508,15 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
     return self.cachedMaxHeight;    
 }
 
+- (UIView *)barViewAtIndex:(NSUInteger)index
+{
+	if (index < [self.barViews count])
+	{
+		return [self.barViews objectAtIndex:index];
+	}
+	return nil;
+}
+
 #pragma mark - Touch Helpers
 
 - (NSInteger)barViewIndexForPoint:(CGPoint)point
@@ -472,6 +573,24 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
     CGRect barViewFrame = barView.frame;
     CGRect selectionViewFrame = self.verticalSelectionView.frame;
     selectionViewFrame.origin.x = barViewFrame.origin.x;
+    selectionViewFrame.size.width = barViewFrame.size.width;
+    
+    if ([self.dataSource respondsToSelector:@selector(shouldExtendSelectionViewIntoHeaderPaddingForChartView:)])
+    {
+        if ([self.dataSource shouldExtendSelectionViewIntoHeaderPaddingForChartView:self])
+        {
+            selectionViewFrame.origin.y = self.headerView.frame.size.height;
+        }
+        else
+        {
+            selectionViewFrame.origin.y = self.headerView.frame.size.height + self.headerPadding;
+        }
+    }
+    else
+    {
+        selectionViewFrame.origin.y = self.headerView.frame.size.height + self.headerPadding;
+    }
+    
     self.verticalSelectionView.frame = selectionViewFrame;
     [self setVerticalSelectionViewVisible:YES animated:YES];
     
@@ -501,35 +620,6 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
     }
 }
 
-#pragma mark - Setters
-
-- (void)setVerticalSelectionViewVisible:(BOOL)verticalSelectionViewVisible animated:(BOOL)animated
-{
-    _verticalSelectionViewVisible = verticalSelectionViewVisible;
-    
-    if (animated)
-    {
-        [UIView animateWithDuration:kJBChartViewDefaultAnimationDuration delay:0.0 options:UIViewAnimationOptionBeginFromCurrentState animations:^{
-            self.verticalSelectionView.alpha = self.verticalSelectionViewVisible ? 1.0 : 0.0;
-        } completion:nil];
-    }
-    else
-    {
-        self.verticalSelectionView.alpha = _verticalSelectionViewVisible ? 1.0 : 0.0;
-    }
-}
-
-- (void)setVerticalSelectionViewVisible:(BOOL)verticalSelectionViewVisible
-{
-    [self setVerticalSelectionViewVisible:verticalSelectionViewVisible animated:NO];
-}
-
-- (void)setShowsVerticalSelection:(BOOL)showsVerticalSelection
-{
-    _showsVerticalSelection = showsVerticalSelection;
-    self.verticalSelectionView.hidden = _showsVerticalSelection ? NO : YES;
-}
-
 #pragma mark - Touches
 
 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

Classes/JBChartView.h

@@ -7,9 +7,12 @@
 //
 
 #import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
 
 extern CGFloat const kJBChartViewDefaultAnimationDuration;
 
+@class JBChartView;
+
 /**
  * At a minimum, a chart can support two states, along with animations to-and-from.
  */
@@ -24,8 +27,48 @@ typedef NS_ENUM(NSInteger, JBChartViewState){
     JBChartViewStateCollapsed
 };
 
+@protocol JBChartViewDataSource <NSObject>
+
+@optional
+
+/**
+ *  Returns whether or not the chart's selection view should extend into the header padding.
+ *
+ *  Default: NO
+ *
+ *  @param chartView        The chart object requesting this information.
+ *
+ *  @return Whether or not a chart's selection view should extend into the header padding.
+ */
+- (BOOL)shouldExtendSelectionViewIntoHeaderPaddingForChartView:(JBChartView *)chartView;
+
+/**
+ *  Returns whether or not the chart's selection view should extend into the footer padding.
+ *
+ *  Default: NO
+ *
+ *  @param chartView        The chart object requesting this information.
+ *
+ *  @return Whether or not a chart's selection view should extend into the footer padding.
+ */
+- (BOOL)shouldExtendSelectionViewIntoFooterPaddingForChartView:(JBChartView *)chartView;
+
+@end
+
+@protocol JBChartViewDelegate <NSObject>
+
+// Extend (via subclass) to add custom functionality
+
+@end
+
 @interface JBChartView : UIView
 
+/*
+ * Base dataSource and delegate protocols. 
+ */
+@property (nonatomic, weak) id<JBChartViewDataSource> dataSource;
+@property (nonatomic, weak) id<JBChartViewDelegate> delegate;
+
 /**
  *  Header and footer views are shown above and below the chart respectively.
  *  Each view will be stretched horizontally to fill width of chart.
@@ -36,9 +79,18 @@ typedef NS_ENUM(NSInteger, JBChartViewState){
 
 /**
  *  The vertical padding between the header and highest chart point (bar, line, etc).
+ *  By default, the selection view will extend into the header padding area. To modify this behaviour,
+ *  implement the dataSource protocol - (BOOL)shouldExtendSelectionViewIntoHeaderPaddingForChartView:(JBChartView *)chartView.
  */
 @property (nonatomic, assign) CGFloat headerPadding;
 
+/**
+ *  The vertical padding between the footer and lowest chart point (bar, line, etc).
+ *  By default, the selection view will extend into the footer padding area. To modify this behaviour,
+ *  implement the dataSource protocol - (BOOL)shouldExtendSelectionViewIntoFooterPaddingForChartView:(JBChartView *)chartView.
+ */
+@property (nonatomic, assign) CGFloat footerPadding;
+
 /**
  *  The minimum and maxmimum values of the chart. 
  *  If no value(s) are supplied:
@@ -68,6 +120,7 @@ typedef NS_ENUM(NSInteger, JBChartViewState){
 /**
  *  Acts similiar to a UITableView's reloadData function.
  *  The entire chart will be torn down and re-constructed via datasource and delegate protocls.
+ *  If a chart's frame changes, reloadData must be called directly afterwards for the changes to take effect.
  */
 - (void)reloadData;
 

Classes/JBLineChartView.h

@@ -8,6 +8,8 @@
 
 #import "JBChartView.h"
 
+@class JBLineChartView;
+
 /**
  * Current support for two line styles: solid (default) and dashed. 
  */
@@ -22,33 +24,7 @@ typedef NS_ENUM(NSInteger, JBLineChartViewLineStyle){
 	JBLineChartViewLineStyleDashed
 };
 
-@protocol JBLineChartViewDataSource;
-@protocol JBLineChartViewDelegate;
-
-@interface JBLineChartView : JBChartView
-
-@property (nonatomic, weak) id<JBLineChartViewDataSource> dataSource;
-@property (nonatomic, weak) id<JBLineChartViewDelegate> delegate;
-
-/**
- *  Vertical highlight overlayed on a line graph during touch events.
- *
- *  Default: YES.
- */
-@property (nonatomic, assign) BOOL showsVerticalSelection;
-
-/**
- *  A highlight shown on a line within the graph during touch events. The highlighted line
- *  is the closest line to the touch point and corresponds to the lineIndex delegatd back via 
- *  didSelectChartAtHorizontalIndex:atLineIndex: and didUnSlectChartAtHorizontalIndex:atLineIndex:
- *
- *  Default: YES.
- */
-@property (nonatomic, assign) BOOL showsLineSelection;
-
-@end
-
-@protocol JBLineChartViewDataSource <NSObject>
+@protocol JBLineChartViewDataSource <JBChartViewDataSource>
 
 @required
 
@@ -78,7 +54,7 @@ typedef NS_ENUM(NSInteger, JBLineChartViewLineStyle){
  *  Dot size is relative to the line width and not adjustable.
  *  Dot color is equal to the line color and not adjustable.
  *
- *  Default: NO
+ *  Default: NO.
  *
  *  @param lineChartView    The line chart object requesting this information.
  *  @param lineIndex        An index number identifying a line in the chart.
@@ -90,7 +66,7 @@ typedef NS_ENUM(NSInteger, JBLineChartViewLineStyle){
 /**
  *  Returns whether or not a line should be rendered with curved connections and rounded end caps.
  *
- *  Default: NO
+ *  Default: NO.
  *
  *  @param lineChartView    The line chart object requesting this information.
  *  @param lineIndex        An index number identifying a line in the chart.
@@ -99,15 +75,48 @@ typedef NS_ENUM(NSInteger, JBLineChartViewLineStyle){
  */
 - (BOOL)lineChartView:(JBLineChartView *)lineChartView smoothLineAtLineIndex:(NSUInteger)lineIndex;
 
+/**
+ *  Returns a (custom) UIView instance representing a dot (x,y point) within the chart.
+ *  For this value to apply, showsDotsForLineAtLineIndex: must return YES for the line at lineIndex.
+ *  This protocol supercedes colorForDotAtHorizontalIndex: and dotRadiusForDotAtHorizontalIndex:.
+ *  If nil is returned. the original dot protocols will take precedence. During selection events, a custom
+ *  dot view will not be hidden unless lineChartView:shouldHideDotViewOnSelectionAtHorizontalIndex:atLineIndex: 
+ *  is implemented.
+ *
+ *  Default: nil.
+ *
+ *  @param lineChartView    The line chart object requesting this information.
+ *  @param horizontalIndex  The 0-based horizontal index of a selection point (left to right, x-axis).
+ *  @param lineIndex        An index number identifying a line in the chart.
+ *
+ *  @return A custom UIView instance representing a dot at a particular horizontal index within a dotted line.
+ */
+- (UIView *)lineChartView:(JBLineChartView *)lineChartView dotViewAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex;
+
+/**
+ *  Returns whether or not a (custom) dot view should be hidden on selection events. 
+ *
+ *  Default: NO.
+ *
+ *  @param lineChartView    The line chart object requesting this information.
+ *  @param horizontalIndex  The 0-based horizontal index of a selection point (left to right, x-axis).
+ *  @param lineIndex        An index number identifying a line in the chart.
+ *
+ *  @return Whether or not a (custom) dot view should be hidden on selection events. 
+ */
+- (BOOL)lineChartView:(JBLineChartView *)lineChartView shouldHideDotViewOnSelectionAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex;
+
 @end
 
-@protocol JBLineChartViewDelegate <NSObject>
+@protocol JBLineChartViewDelegate <JBChartViewDelegate>
 
 @required
 
 /**
  *  Vertical value for a line point at a given index (left to right). There is no ceiling on the the height;
  *  the chart will automatically normalize all values between the overal min and max heights.
+ *  NAN may able be retuend to indicate missing values. The chart's line will begin at the first non-NAN value and end at the last non-NAN value. 
+ *  Furthermore, the line will interopolate any NAN values in between (ie. the line will not be interrupted).
  *
  *  @param lineChartView    The line chart object requesting this information.
  *  @param horizontalIndex  The 0-based horizontal index of a selection point (left to right, x-axis).
@@ -128,7 +137,7 @@ typedef NS_ENUM(NSInteger, JBLineChartViewLineStyle){
  *
  *  @param lineChartView    A line chart object informing the delegate about the new selection.
  *  @param lineIndex        An index number identifying the closest line in the chart to the current touch
- *  @param horizontalIndex  The 0-based horizontal index of a selection point (left to right, x-axis).point.
+ *  @param horizontalIndex  The 0-based horizontal index of a selection point (left to right, x-axis).
  *  @param touchPoint       The touch point in relation to the chart's bounds (excludes footer and header).
  */
 - (void)lineChartView:(JBLineChartView *)lineChartView didSelectLineAtIndex:(NSUInteger)lineIndex horizontalIndex:(NSUInteger)horizontalIndex touchPoint:(CGPoint)touchPoint;
@@ -173,7 +182,7 @@ typedef NS_ENUM(NSInteger, JBLineChartViewLineStyle){
  *  Default: black color.
  *
  *  @param lineChartView    The line chart object requesting this information.
- *  @param horizontalIndex  The 0-based horizontal index of a selection point (left to right, x-axis).point.
+ *  @param horizontalIndex  The 0-based horizontal index of a selection point (left to right, x-axis)
  *  @param lineIndex        An index number identifying a line in the chart.
  *
  *  @return The color to be used to color a dot within a dotted line in the chart.
@@ -197,14 +206,15 @@ typedef NS_ENUM(NSInteger, JBLineChartViewLineStyle){
  *  For this value to apply, showsDotsForLineAtLineIndex: must return YES for the line at lineIndex.
  *  Any value can be returned for lineIndex's that don't support dots, as it will never be called.
  *
- *  Default: line width x 3.
+ *  Default: line width x 6.
  *
  *  @param lineChartView    The line chart object requesting this information.
+ *  @param horizontalIndex  The 0-based horizontal index of a selection point (left to right, x-axis).
  *  @param lineIndex        An index number identifying a line in the chart.
  *
  *  @return The radius of the dots within a dotted line in the chart.
  */
-- (CGFloat)lineChartView:(JBLineChartView *)lineChartView dotRadiusForLineAtLineIndex:(NSUInteger)lineIndex;
+- (CGFloat)lineChartView:(JBLineChartView *)lineChartView dotRadiusForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex;
 
 /**
  *  Returns the width of the (vertical) selection view to be overlayed on the chart during touch events.
@@ -220,17 +230,16 @@ typedef NS_ENUM(NSInteger, JBLineChartViewLineStyle){
 - (CGFloat)verticalSelectionWidthForLineChartView:(JBLineChartView *)lineChartView;
 
 /**
- *  Returns the (vertical) selection color to be overlayed on the chart during touch events.
+ *  Returns the (vertical) selection color to be overlayed on the chart during touch events on a given line.
  *  The color is automically faded to transparent (vertically). The property showsVerticalSelection
  *  must be YES for the color to apply.
  *
- *  Default: white color (faded to transparent).
- *
  *  @param lineChartView    The line chart object requesting this information.
+ *  @param lineIndex        An index number identifying a line in the chart.
  *
- *  @return The color of the selection view used during chart selections.
+ *  @return The color of the selection view used during chart selections of the given line.
  */
-- (UIColor *)verticalSelectionColorForLineChartView:(JBLineChartView *)lineChartView;
+- (UIColor *)lineChartView:(JBLineChartView *)lineChartView verticalSelectionColorForLineAtLineIndex:(NSUInteger)lineIndex;
 
 /**
  *  Returns the selection color to be overlayed on a line within the chart during touch events.
@@ -265,7 +274,7 @@ typedef NS_ENUM(NSInteger, JBLineChartViewLineStyle){
  *  Default: white color.
  *
  *  @param lineChartView    The line chart object requesting this information.
- *  @param horizontalIndex  The 0-based horizontal index of a selection point (left to right, x-axis).point.
+ *  @param horizontalIndex  The 0-based horizontal index of a selection point (left to right, x-axis).
  *  @param lineIndex        An index number identifying a line in the chart.
  *
  *  @return The color to be used to highlight a dot within a dotted line during chart selections.
@@ -276,7 +285,7 @@ typedef NS_ENUM(NSInteger, JBLineChartViewLineStyle){
  *  Returns the line style of a particular line at lineIndex within the chart.
  *  See JBLineChartViewLineStyle for line style descriptions.
  *
- *  Default: JBLineChartViewLineStyleSolid
+ *  Default: JBLineChartViewLineStyleSolid.
  *
  *  @param lineChartView    The line chart object requesting this information.
  *  @param lineIndex        An index number identifying a line in the chart.
@@ -286,3 +295,38 @@ typedef NS_ENUM(NSInteger, JBLineChartViewLineStyle){
 - (JBLineChartViewLineStyle)lineChartView:(JBLineChartView *)lineChartView lineStyleForLineAtLineIndex:(NSUInteger)lineIndex;
 
 @end
+
+@interface JBLineChartView : JBChartView
+
+@property (nonatomic, weak) id<JBLineChartViewDataSource> dataSource;
+@property (nonatomic, weak) id<JBLineChartViewDelegate> delegate;
+
+/**
+ *  Vertical highlight overlayed on a line graph during touch events.
+ *
+ *  Default: YES.
+ */
+@property (nonatomic, assign) BOOL showsVerticalSelection;
+
+/**
+ *  A highlight shown on a line within the graph during touch events. The highlighted line
+ *  is the closest line to the touch point and corresponds to the lineIndex delegatd back via 
+ *  didSelectChartAtHorizontalIndex:atLineIndex: and didUnSlectChartAtHorizontalIndex:atLineIndex:
+ *
+ *  Default: YES.
+ */
+@property (nonatomic, assign) BOOL showsLineSelection;
+
+/**
+ *  The dot view within a particular line at a horizontalIndex. 
+ *
+ *  Default: nil.
+ *
+ *  @param horizontalIndex  The 0-based horizontal index of a selection point (left to right, x-axis)
+ *  @param lineIndex        An index number identifying a line in the chart.
+ *
+ *  @return The UIView representing the dot view at a given horizontalIndex within a line or nil if any index is out of range.
+ */
+- (UIView *)dotViewAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex;
+
+@end

Classes/JBLineChartView.m

@@ -75,6 +75,7 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
 @interface JBLineChartPoint : NSObject
 
 @property (nonatomic, assign) CGPoint position;
+@property (nonatomic, assign) BOOL hidden;
 
 @end
 
@@ -137,7 +138,9 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
 - (UIColor *)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView colorForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex;
 - (UIColor *)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView selectedColorForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex;
 - (CGFloat)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView widthForLineAtLineIndex:(NSUInteger)lineIndex;
-- (CGFloat)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView dotRadiusForLineAtLineIndex:(NSUInteger)lineIndex;
+- (CGFloat)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView dotRadiusForLineAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex;
+- (UIView *)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView dotViewAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex;
+- (BOOL)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView shouldHideDotViewOnSelectionAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex;
 - (CGFloat)paddingForLineChartDotsView:(JBLineChartDotsView *)lineChartDotsView;
 - (BOOL)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView showsDotsForLineAtLineIndex:(NSUInteger)lineIndex;
 
@@ -184,6 +187,9 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
 
 @implementation JBLineChartView
 
+@dynamic dataSource;
+@dynamic delegate;
+
 #pragma mark - Alloc/Init
 
 + (void)initialize
@@ -265,7 +271,8 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
 
         NSMutableArray *mutableChartData = [NSMutableArray array];
         NSAssert([self.dataSource respondsToSelector:@selector(numberOfLinesInLineChartView:)], @"JBLineChartView // dataSource must implement - (NSUInteger)numberOfLinesInLineChartView:(JBLineChartView *)lineChartView");
-        for (NSUInteger lineIndex=0; lineIndex<[self.dataSource numberOfLinesInLineChartView:self]; lineIndex++)
+        NSUInteger numberOfLines = [self.dataSource numberOfLinesInLineChartView:self];
+        for (NSUInteger lineIndex=0; lineIndex<numberOfLines; lineIndex++)
         {
             NSAssert([self.dataSource respondsToSelector:@selector(lineChartView:numberOfVerticalValuesAtLineIndex:)], @"JBLineChartView // dataSource must implement - (NSUInteger)lineChartView:(JBLineChartView *)lineChartView numberOfVerticalValuesAtLineIndex:(NSUInteger)lineIndex");
             NSUInteger dataCount = [self.dataSource lineChartView:self numberOfVerticalValuesAtLineIndex:lineIndex];
@@ -274,14 +281,20 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
             {               
                 NSAssert([self.delegate respondsToSelector:@selector(lineChartView:verticalValueForHorizontalIndex:atLineIndex:)], @"JBLineChartView // delegate must implement - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
                 CGFloat rawHeight =  [self.delegate lineChartView:self verticalValueForHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
-                NSAssert(rawHeight >= 0, @"JBLineChartView // delegate function - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex must return a CGFloat >= 0");
+                NSAssert(isnan(rawHeight) || (rawHeight >= 0), @"JBLineChartView // delegate function - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex must return a CGFloat >= 0 OR NAN");
+
+                JBLineChartPoint *chartPoint = [[JBLineChartPoint alloc] init];
+                if(isnan(rawHeight))
+                {
+                    chartPoint.hidden = YES;
+                    rawHeight = 0; //set to 0 so we can calculate the x position
+                }
 
                 CGFloat normalizedHeight = [self normalizedHeightForRawHeight:rawHeight];
                 yOffset = mainViewRect.size.height - normalizedHeight;
                 
-                JBLineChartPoint *chartPoint = [[JBLineChartPoint alloc] init];
                 chartPoint.position = CGPointMake(xOffset, yOffset);
-                
+
                 [chartPointData addObject:chartPoint];
                 xOffset += pointSpace;
             }
@@ -299,6 +312,7 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
         // Remove old line view
         if (self.linesView)
         {
+            self.linesView.delegate = nil;
             [self.linesView removeFromSuperview];
             self.linesView = nil;
         }
@@ -326,6 +340,7 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
         // Remove old dot view
         if (self.dotsView)
         {
+            self.dotsView.delegate = nil;
             [self.dotsView removeFromSuperview];
             self.dotsView = nil;
         }
@@ -360,15 +375,28 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
         {
             selectionViewWidth = MIN([self.delegate verticalSelectionWidthForLineChartView:self], self.bounds.size.width);
         }
-        self.verticalSelectionView = [[JBChartVerticalSelectionView alloc] initWithFrame:CGRectMake(0, 0, selectionViewWidth, self.bounds.size.height - self.footerView.frame.size.height)];
+        
+        CGFloat verticalSelectionViewHeight = self.bounds.size.height - self.headerView.frame.size.height - self.footerView.frame.size.height - self.headerPadding - self.footerPadding;
+        
+        if ([self.dataSource respondsToSelector:@selector(shouldExtendSelectionViewIntoHeaderPaddingForChartView:)])
+        {
+            if ([self.dataSource shouldExtendSelectionViewIntoHeaderPaddingForChartView:self])
+            {
+                verticalSelectionViewHeight += self.headerPadding;
+            }
+        }
+        
+        if ([self.dataSource respondsToSelector:@selector(shouldExtendSelectionViewIntoFooterPaddingForChartView:)])
+        {
+            if ([self.dataSource shouldExtendSelectionViewIntoFooterPaddingForChartView:self])
+            {
+                verticalSelectionViewHeight += self.footerPadding;
+            }
+        }
+
+        self.verticalSelectionView = [[JBChartVerticalSelectionView alloc] initWithFrame:CGRectMake(0, 0, selectionViewWidth, verticalSelectionViewHeight)];
         self.verticalSelectionView.alpha = 0.0;
         self.verticalSelectionView.hidden = !self.showsVerticalSelection;
-        if ([self.delegate respondsToSelector:@selector(verticalSelectionColorForLineChartView:)])
-        {
-            UIColor *selectionViewBackgroundColor = [self.delegate verticalSelectionColorForLineChartView:self];
-            NSAssert(selectionViewBackgroundColor != nil, @"JBLineChartView // delegate function - (UIColor *)verticalSelectionColorForLineChartView:(JBLineChartView *)lineChartView must return a non-nil UIColor");
-            self.verticalSelectionView.bgColor = selectionViewBackgroundColor;
-        }
 
         // Add new selection bar
         if (self.footerView)
@@ -407,7 +435,7 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
 
     if ((maxHeight - minHeight) <= 0)
     {
-        return 0;
+        return [self availableHeight];
     }
 
     return ((rawHeight - minHeight) / (maxHeight - minHeight)) * [self availableHeight];
@@ -415,15 +443,16 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
 
 - (CGFloat)availableHeight
 {
-    return self.bounds.size.height - self.headerView.frame.size.height - self.footerView.frame.size.height - self.headerPadding;
+    return self.bounds.size.height - self.headerView.frame.size.height - self.footerView.frame.size.height - self.headerPadding - self.footerPadding;
 }
 
 - (CGFloat)padding
 {
     CGFloat maxLineWidth = 0.0f;
     NSAssert([self.dataSource respondsToSelector:@selector(numberOfLinesInLineChartView:)], @"JBLineChartView // dataSource must implement - (NSUInteger)numberOfLinesInLineChartView:(JBLineChartView *)lineChartView");
+    NSInteger numberOfLines = [self.dataSource numberOfLinesInLineChartView:self];
 
-    for (NSUInteger lineIndex=0; lineIndex<[self.dataSource numberOfLinesInLineChartView:self]; lineIndex++)
+    for (NSInteger lineIndex=0; lineIndex<numberOfLines; lineIndex++)
     {
         BOOL showsDots = NO;
         if ([self.dataSource respondsToSelector:@selector(lineChartView:showsDotsForLineAtLineIndex:)])
@@ -437,16 +466,78 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
             lineWidth = [self.delegate lineChartView:self widthForLineAtLineIndex:lineIndex];
         }
         
-        CGFloat dotRadius = lineWidth * kJBLineChartDotsViewDefaultRadiusFactor; // default
+        CGFloat maxDotLength = 0;
         if (showsDots)
         {
-            if ([self.delegate respondsToSelector:@selector(lineChartView:dotRadiusForLineAtLineIndex:)])
+            NSAssert([self.dataSource respondsToSelector:@selector(lineChartView:numberOfVerticalValuesAtLineIndex:)], @"JBLineChartView // dataSource must implement - (NSUInteger)lineChartView:(JBLineChartView *)lineChartView numberOfVerticalValuesAtLineIndex:(NSUInteger)lineIndex");
+            NSUInteger dataCount = [self.dataSource lineChartView:self numberOfVerticalValuesAtLineIndex:lineIndex];
+            
+            for (NSUInteger horizontalIndex=0; horizontalIndex<dataCount; horizontalIndex++)
             {
-                dotRadius = [self.delegate lineChartView:self dotRadiusForLineAtLineIndex:lineIndex];
+                BOOL shouldEvaluateDotSize = NO;
+                
+                // Left dot
+                if (horizontalIndex == 0)
+                {
+                    shouldEvaluateDotSize = YES;
+                }
+                // Right dot
+                else if (horizontalIndex == (dataCount - 1))
+                {
+                    shouldEvaluateDotSize = YES;
+                }
+                else
+                {
+                    NSAssert([self.delegate respondsToSelector:@selector(lineChartView:verticalValueForHorizontalIndex:atLineIndex:)], @"JBLineChartView // delegate must implement - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
+                    CGFloat height = [self.delegate lineChartView:self verticalValueForHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
+                    
+                    // Top
+                    if (height == [self cachedMaxHeight])
+                    {
+                        shouldEvaluateDotSize = YES;
+                    }
+                    
+                    // Bottom
+                    else if (height == [self cachedMinHeight])
+                    {
+                        shouldEvaluateDotSize = YES;
+                    }
+                }
+                
+                if (shouldEvaluateDotSize)
+                {
+                    if ([self.dataSource respondsToSelector:@selector(lineChartView:dotViewAtHorizontalIndex:atLineIndex:)])
+                    {
+                        if ([self.dataSource respondsToSelector:@selector(lineChartView:dotViewAtHorizontalIndex:atLineIndex:)])
+                        {
+                            UIView *customDotView = [self.dataSource lineChartView:self dotViewAtHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
+                            if (customDotView.frame.size.width > maxDotLength || customDotView.frame.size.height > maxDotLength)
+                            {
+                                maxDotLength = fmaxf(customDotView.frame.size.width, customDotView.frame.size.height);
+                            }
+                        }
+                    }
+                    else if ([self.delegate respondsToSelector:@selector(lineChartView:dotRadiusForDotAtHorizontalIndex:atLineIndex:)])
+                    {
+						CGFloat dotRadius = ([self.delegate lineChartView:self dotRadiusForDotAtHorizontalIndex:horizontalIndex atLineIndex:lineIndex] * 2.0f);
+                        if (dotRadius > maxDotLength)
+                        {
+                            maxDotLength = dotRadius;
+                        }
+                    }
+                    else
+                    {
+						CGFloat defaultDotRadius = ((lineWidth * kJBLineChartDotsViewDefaultRadiusFactor) * 2.0f);
+                        if (defaultDotRadius > maxDotLength)
+                        {
+                            maxDotLength = defaultDotRadius;
+                        }
+                    }
+                }
             }
         }
         
-        CGFloat currentMaxLineWidth = MAX(dotRadius, lineWidth);
+        CGFloat currentMaxLineWidth = MAX(maxDotLength, lineWidth);
         if (currentMaxLineWidth > maxLineWidth)
         {
             maxLineWidth = currentMaxLineWidth;
@@ -459,7 +550,8 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
 {
     NSUInteger dataCount = 0;
     NSAssert([self.dataSource respondsToSelector:@selector(numberOfLinesInLineChartView:)], @"JBLineChartView // dataSource must implement - (NSUInteger)numberOfLinesInLineChartView:(JBLineChartView *)lineChartView");
-    for (NSUInteger lineIndex=0; lineIndex<[self.dataSource numberOfLinesInLineChartView:self]; lineIndex++)
+    NSInteger numberOfLines = [self.dataSource numberOfLinesInLineChartView:self];
+    for (NSInteger lineIndex=0; lineIndex<numberOfLines; lineIndex++)
     {
         NSAssert([self.dataSource respondsToSelector:@selector(lineChartView:numberOfVerticalValuesAtLineIndex:)], @"JBLineChartView // dataSource must implement - (NSUInteger)lineChartView:(JBLineChartView *)lineChartView numberOfVerticalValuesAtLineIndex:(NSUInteger)lineIndex");
         NSUInteger lineDataCount = [self.dataSource lineChartView:self numberOfVerticalValuesAtLineIndex:lineIndex];
@@ -580,16 +672,31 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
     return kJBLineChartLinesViewStrokeWidth;
 }
 
-- (CGFloat)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView dotRadiusForLineAtLineIndex:(NSUInteger)lineIndex
+- (CGFloat)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView dotRadiusForLineAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex
 {
-    if ([self.delegate respondsToSelector:@selector(lineChartView:dotRadiusForLineAtLineIndex:)])
+    if ([self.delegate respondsToSelector:@selector(lineChartView:dotRadiusForDotAtHorizontalIndex:atLineIndex:)])
     {
-        return [self.delegate lineChartView:self dotRadiusForLineAtLineIndex:lineIndex];
+        return [self.delegate lineChartView:self dotRadiusForDotAtHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
     }
-    else
+    return [self lineChartDotsView:lineChartDotsView widthForLineAtLineIndex:lineIndex] * kJBLineChartDotsViewDefaultRadiusFactor;
+}
+
+- (UIView *)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView dotViewAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex
+{
+    if ([self.dataSource respondsToSelector:@selector(lineChartView:dotViewAtHorizontalIndex:atLineIndex:)])
     {
-        return [self lineChartDotsView:lineChartDotsView widthForLineAtLineIndex:lineIndex] * kJBLineChartDotsViewDefaultRadiusFactor;
+        return [self.dataSource lineChartView:self dotViewAtHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
     }
+    return nil;
+}
+
+- (BOOL)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView shouldHideDotViewOnSelectionAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex
+{
+    if ([self.dataSource respondsToSelector:@selector(lineChartView:shouldHideDotViewOnSelectionAtHorizontalIndex:atLineIndex:)])
+    {
+        return [self.dataSource lineChartView:self shouldHideDotViewOnSelectionAtHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
+    }
+    return NO;
 }
 
 - (CGFloat)paddingForLineChartDotsView:(JBLineChartDotsView *)lineChartDotsView
@@ -670,6 +777,33 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
     [self setState:state animated:animated force:NO callback:callback];
 }
 
+- (void)setVerticalSelectionViewVisible:(BOOL)verticalSelectionViewVisible animated:(BOOL)animated
+{
+	_verticalSelectionViewVisible = verticalSelectionViewVisible;
+	
+	if (animated)
+	{
+		[UIView animateWithDuration:kJBChartViewDefaultAnimationDuration delay:0.0 options:UIViewAnimationOptionBeginFromCurrentState animations:^{
+			self.verticalSelectionView.alpha = self.verticalSelectionViewVisible ? 1.0 : 0.0;
+		} completion:nil];
+	}
+	else
+	{
+		self.verticalSelectionView.alpha = _verticalSelectionViewVisible ? 1.0 : 0.0;
+	}
+}
+
+- (void)setVerticalSelectionViewVisible:(BOOL)verticalSelectionViewVisible
+{
+	[self setVerticalSelectionViewVisible:verticalSelectionViewVisible animated:NO];
+}
+
+- (void)setShowsVerticalSelection:(BOOL)showsVerticalSelection
+{
+	_showsVerticalSelection = showsVerticalSelection;
+	self.verticalSelectionView.hidden = _showsVerticalSelection ? NO : YES;
+}
+
 #pragma mark - Getters
 
 - (CGFloat)cachedMinHeight
@@ -678,7 +812,8 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
     {
         CGFloat minHeight = FLT_MAX;
         NSAssert([self.dataSource respondsToSelector:@selector(numberOfLinesInLineChartView:)], @"JBLineChartView // dataSource must implement - (NSUInteger)numberOfLinesInLineChartView:(JBLineChartView *)lineChartView");
-        for (NSUInteger lineIndex=0; lineIndex<[self.dataSource numberOfLinesInLineChartView:self]; lineIndex++)
+        NSUInteger numberOfLines = [self.dataSource numberOfLinesInLineChartView:self];
+        for (NSUInteger lineIndex=0; lineIndex<numberOfLines; lineIndex++)
         {
             NSAssert([self.dataSource respondsToSelector:@selector(lineChartView:numberOfVerticalValuesAtLineIndex:)], @"JBLineChartView // dataSource must implement - (NSUInteger)lineChartView:(JBLineChartView *)lineChartView numberOfVerticalValuesAtLineIndex:(NSUInteger)lineIndex");
             NSUInteger dataCount = [self.dataSource lineChartView:self numberOfVerticalValuesAtLineIndex:lineIndex];
@@ -686,8 +821,8 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
             {
                 NSAssert([self.delegate respondsToSelector:@selector(lineChartView:verticalValueForHorizontalIndex:atLineIndex:)], @"JBLineChartView // delegate must implement - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
                 CGFloat height = [self.delegate lineChartView:self verticalValueForHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
-                NSAssert(height >= 0, @"JBLineChartView // delegate function - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex must return a CGFloat >= 0");
-                if (height < minHeight)
+                NSAssert(isnan(height) || (height >= 0), @"JBLineChartView // delegate function - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex must return a CGFloat >= 0 OR NAN");
+                if (!isnan(height) && height < minHeight)
                 {
                     minHeight = height;
                 }
@@ -704,7 +839,8 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
     {
         CGFloat maxHeight = 0;
         NSAssert([self.dataSource respondsToSelector:@selector(numberOfLinesInLineChartView:)], @"JBLineChartView // dataSource must implement - (NSUInteger)numberOfLinesInLineChartView:(JBLineChartView *)lineChartView");
-        for (NSUInteger lineIndex=0; lineIndex<[self.dataSource numberOfLinesInLineChartView:self]; lineIndex++)
+        NSUInteger numberOfLines = [self.dataSource numberOfLinesInLineChartView:self];
+        for (NSUInteger lineIndex=0; lineIndex<numberOfLines; lineIndex++)
         {
             NSAssert([self.dataSource respondsToSelector:@selector(lineChartView:numberOfVerticalValuesAtLineIndex:)], @"JBLineChartView // dataSource must implement - (NSUInteger)lineChartView:(JBLineChartView *)lineChartView numberOfVerticalValuesAtLineIndex:(NSUInteger)lineIndex");
             NSUInteger dataCount = [self.dataSource lineChartView:self numberOfVerticalValuesAtLineIndex:lineIndex];
@@ -712,8 +848,8 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
             {
                 NSAssert([self.delegate respondsToSelector:@selector(lineChartView:verticalValueForHorizontalIndex:atLineIndex:)], @"JBLineChartView // delegate must implement - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
                 CGFloat height = [self.delegate lineChartView:self verticalValueForHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
-                NSAssert(height >= 0, @"JBLineChartView // delegate function - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex must return a CGFloat >= 0");
-                if (height > maxHeight)
+                NSAssert(isnan(height) || (height >= 0), @"JBLineChartView // delegate function - (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex must return a CGFloat >= 0 OR NAN");
+                if (!isnan(height) && height > maxHeight)
                 {
                     maxHeight = height;
                 }
@@ -742,6 +878,16 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
     return self.cachedMaxHeight;
 }
 
+- (UIView *)dotViewAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex
+{
+	NSArray *dotViews = [self.dotsView.dotViewsDict objectForKey:@(lineIndex)];
+	if (horizontalIndex < [dotViews count])
+	{
+		return [dotViews objectAtIndex:horizontalIndex];
+	}
+	return nil;
+}
+
 #pragma mark - Touch Helpers
 
 - (CGPoint)clampPoint:(CGPoint)point toBounds:(CGRect)bounds padding:(CGFloat)padding
@@ -759,9 +905,9 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
     for (JBLineChartPoint *lineChartPoint in lineData)
     {
         BOOL clamped = (indexClamp == JBLineChartHorizontalIndexClampNone) ? YES : (indexClamp == JBLineChartHorizontalIndexClampLeft) ? (point.x - lineChartPoint.position.x >= 0) : (point.x - lineChartPoint.position.x <= 0);
-        if ((abs(point.x - lineChartPoint.position.x)) < currentDistance && clamped == YES)
+        if ((fabs(point.x - lineChartPoint.position.x)) < currentDistance && clamped == YES)
         {
-            currentDistance = (abs(point.x - lineChartPoint.position.x));
+            currentDistance = (fabs(point.x - lineChartPoint.position.x));
             selectedIndex = index;
         }
         index++;
@@ -800,9 +946,10 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
     NSUInteger shortestDistance = INT_MAX;
     NSInteger selectedIndex = kJBLineChartUnselectedLineIndex;
     NSAssert([self.dataSource respondsToSelector:@selector(numberOfLinesInLineChartView:)], @"JBLineChartView // dataSource must implement - (NSUInteger)numberOfLinesInLineChartView:(JBLineChartView *)lineChartView");
+    NSUInteger numberOfLines = [self.dataSource numberOfLinesInLineChartView:self];
     
     // Iterate all lines
-    for (NSUInteger lineIndex=0; lineIndex<[self.dataSource numberOfLinesInLineChartView:self]; lineIndex++)
+    for (NSUInteger lineIndex=0; lineIndex<numberOfLines; lineIndex++)
     {
         NSAssert([self.dataSource respondsToSelector:@selector(lineChartView:numberOfVerticalValuesAtLineIndex:)], @"JBLineChartView // dataSource must implement - (NSUInteger)lineChartView:(JBLineChartView *)lineChartView numberOfVerticalValuesAtLineIndex:(NSUInteger)lineIndex");
         if ([self.dataSource lineChartView:self numberOfVerticalValuesAtLineIndex:lineIndex] > rightHorizontalIndex)
@@ -826,7 +973,7 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
             // Insersection point
             CGPoint interesectionPoint = CGPointMake(normalizedTouchPoint.x, (lineSlope * (normalizedTouchPoint.x - leftPoint.x)) + leftPoint.y);
 
-            CGFloat currentDistance = abs(interesectionPoint.y - normalizedTouchPoint.y);
+            CGFloat currentDistance = fabs(interesectionPoint.y - normalizedTouchPoint.y);
             if (currentDistance < shortestDistance)
             {
                 shortestDistance = currentDistance;
@@ -841,27 +988,50 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
 {
     if (self.state == JBChartViewStateCollapsed || [self.chartData count] <= 0)
     {
-        return;
+        return; // no touch for no data or collapsed
     }
     
     UITouch *touch = [touches anyObject];
     CGPoint touchPoint = [self clampPoint:[touch locationInView:self.linesView] toBounds:self.linesView.bounds padding:[self padding]];
+    
+    NSUInteger lineIndex = self.linesView.selectedLineIndex != kJBLineChartLinesViewUnselectedLineIndex ? self.linesView.selectedLineIndex : [self lineIndexForPoint:touchPoint];
+	
+	if (lineIndex == kJBLineChartLinesViewUnselectedLineIndex || [[self.chartData objectAtIndex:lineIndex] count] <= 0)
+	{
+		return; // no touch for line without data
+	}
 
     if ([self.delegate respondsToSelector:@selector(lineChartView:didSelectLineAtIndex:horizontalIndex:touchPoint:)])
     {
-        NSUInteger lineIndex = self.linesView.selectedLineIndex != kJBLineChartLinesViewUnselectedLineIndex ? self.linesView.selectedLineIndex : [self lineIndexForPoint:touchPoint];
         NSUInteger horizontalIndex = [self horizontalIndexForPoint:touchPoint indexClamp:JBLineChartHorizontalIndexClampNone lineData:[self.chartData objectAtIndex:lineIndex]];
         [self.delegate lineChartView:self didSelectLineAtIndex:lineIndex horizontalIndex:horizontalIndex touchPoint:[touch locationInView:self]];
     }
     
     if ([self.delegate respondsToSelector:@selector(lineChartView:didSelectLineAtIndex:horizontalIndex:)])
     {
-        NSUInteger lineIndex = self.linesView.selectedLineIndex != kJBLineChartLinesViewUnselectedLineIndex ? self.linesView.selectedLineIndex : [self lineIndexForPoint:touchPoint];
         [self.delegate lineChartView:self didSelectLineAtIndex:lineIndex horizontalIndex:[self horizontalIndexForPoint:touchPoint indexClamp:JBLineChartHorizontalIndexClampNone lineData:[self.chartData objectAtIndex:lineIndex]]];
     }
     
+    if ([self.delegate respondsToSelector:@selector(lineChartView:verticalSelectionColorForLineAtLineIndex:)])
+    {
+        UIColor *verticalSelectionColor = [self.delegate lineChartView:self verticalSelectionColorForLineAtLineIndex:lineIndex];
+        NSAssert(verticalSelectionColor != nil, @"JBLineChartView // delegate function - (UIColor *)lineChartView:(JBLineChartView *)lineChartView verticalSelectionColorForLineAtLineIndex:(NSUInteger)lineIndex must return a non-nil UIColor");
+        self.verticalSelectionView.bgColor = verticalSelectionColor;
+    }
+    
+    
     CGFloat xOffset = fmin(self.bounds.size.width - self.verticalSelectionView.frame.size.width, fmax(0, touchPoint.x - (ceil(self.verticalSelectionView.frame.size.width * 0.5))));
-    self.verticalSelectionView.frame = CGRectMake(xOffset, self.verticalSelectionView.frame.origin.y, self.verticalSelectionView.frame.size.width, self.verticalSelectionView.frame.size.height);
+    CGFloat yOffset = self.headerView.frame.size.height + self.headerPadding;
+    
+    if ([self.dataSource respondsToSelector:@selector(shouldExtendSelectionViewIntoHeaderPaddingForChartView:)])
+    {
+        if ([self.dataSource shouldExtendSelectionViewIntoHeaderPaddingForChartView:self])
+        {
+            yOffset = self.headerView.frame.size.height;
+        }
+    }
+    
+    self.verticalSelectionView.frame = CGRectMake(xOffset, yOffset, self.verticalSelectionView.frame.size.width, self.verticalSelectionView.frame.size.height);
     [self setVerticalSelectionViewVisible:YES animated:YES];
 }
 
@@ -886,37 +1056,6 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
     }
 }
 
-#pragma mark - Setters
-
-- (void)setVerticalSelectionViewVisible:(BOOL)verticalSelectionViewVisible animated:(BOOL)animated
-{
-    _verticalSelectionViewVisible = verticalSelectionViewVisible;
-
-    [self bringSubviewToFront:self.verticalSelectionView];
-
-    if (animated)
-    {
-        [UIView animateWithDuration:kJBChartViewDefaultAnimationDuration delay:0.0 options:UIViewAnimationOptionBeginFromCurrentState animations:^{
-            self.verticalSelectionView.alpha = self.verticalSelectionViewVisible ? 1.0 : 0.0;
-        } completion:nil];
-    }
-    else
-    {
-        self.verticalSelectionView.alpha = _verticalSelectionViewVisible ? 1.0 : 0.0;
-    }
-}
-
-- (void)setVerticalSelectionViewVisible:(BOOL)verticalSelectionViewVisible
-{
-    [self setVerticalSelectionViewVisible:verticalSelectionViewVisible animated:NO];
-}
-
-- (void)setShowsVerticalSelection:(BOOL)showsVerticalSelection
-{
-    _showsVerticalSelection = showsVerticalSelection;
-    self.verticalSelectionView.hidden = _showsVerticalSelection ? NO : YES;
-}
-
 #pragma mark - Gestures
 
 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
@@ -1068,6 +1207,11 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
     NSUInteger lineIndex = 0;
     for (NSArray *lineData in chartData)
     {
+        if (lineData.count == 0)
+        {
+            continue;
+        }
+
         UIBezierPath *path = [UIBezierPath bezierPath];
         path.miterLimit = kJBLineChartLinesViewMiterLimit;
         
@@ -1077,16 +1221,22 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
         NSAssert([self.delegate respondsToSelector:@selector(lineChartLinesView:smoothLineAtLineIndex:)], @"JBLineChartLinesView // delegate must implement - (BOOL)lineChartLinesView:(JBLineChartLinesView *)lineChartLinesView smoothLineAtLineIndex:(NSUInteger)lineIndex");
         BOOL smoothLine = [self.delegate lineChartLinesView:self smoothLineAtLineIndex:lineIndex];
         
-        NSUInteger index = 0;
+        BOOL visiblePointFound = NO;
         NSArray *sortedLineData = [lineData sortedArrayUsingSelector:@selector(compare:)];
         CGFloat firstXPosition = 0.0f;
         CGFloat lastXPosition = 0.0f;
-        for (JBLineChartPoint *lineChartPoint in sortedLineData)
+        for (NSUInteger index = 0; index < [sortedLineData count]; index++)
         {
-            if (index == 0)
+            JBLineChartPoint *lineChartPoint = [sortedLineData objectAtIndex:index];
+            if(lineChartPoint.hidden) {
+                continue;
+            }
+
+            if (!visiblePointFound)
             {
                 [path moveToPoint:CGPointMake(lineChartPoint.position.x, fmin(self.bounds.size.height - padding, fmax(padding, lineChartPoint.position.y)))];
                 firstXPosition = lineChartPoint.position.x;
+                visiblePointFound = YES;
             }
             else
             {
@@ -1122,7 +1272,6 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
                 previousSlope = currentSlope;
             }
             previousLineChartPoint = lineChartPoint;
-            index++;
         }
         
         JBLineLayer *shapeLayer = [self lineLayerForLineIndex:lineIndex];
@@ -1172,9 +1321,12 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
         // Continue the path for the fill layer (close and fill)
         UIBezierPath *fillPath = [path copy];
         
-        [fillPath addLineToPoint:CGPointMake(lastXPosition, self.bounds.size.height - padding)];
-        [fillPath addLineToPoint:CGPointMake(firstXPosition, self.bounds.size.height - padding)];
-        
+        if(visiblePointFound)
+        {
+            [fillPath addLineToPoint:CGPointMake(lastXPosition, self.bounds.size.height - padding)];
+            [fillPath addLineToPoint:CGPointMake(firstXPosition, self.bounds.size.height - padding)];
+        }
+
         shapeFillLayer.path = fillPath.CGPath;
         shapeFillLayer.frame = self.bounds;
         
@@ -1343,22 +1495,34 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
         if ([self.delegate lineChartDotsView:self showsDotsForLineAtLineIndex:lineIndex]) // line at index contains dots
         {
             NSMutableArray *mutableDotViews = [NSMutableArray array];
-            NSUInteger horizontalIndex = 0;
-            for (JBLineChartPoint *lineChartPoint in [lineData sortedArrayUsingSelector:@selector(compare:)])
-            {                               
-                NSAssert([self.delegate respondsToSelector:@selector(lineChartDotsView:dotRadiusForLineAtLineIndex:)], @"JBLineChartDotsView // delegate must implement - (CGFloat)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView dotRadiusForLineAtLineIndex:(NSUInteger)lineIndex");
-                CGFloat dotRadius = [self.delegate lineChartDotsView:self dotRadiusForLineAtLineIndex:lineIndex];
+            NSArray *sortedLineData = [lineData sortedArrayUsingSelector:@selector(compare:)];
+            for (NSUInteger horizontalIndex = 0; horizontalIndex < [sortedLineData count]; horizontalIndex++)
+            {
+                JBLineChartPoint *lineChartPoint = [sortedLineData objectAtIndex:horizontalIndex];
+                if(lineChartPoint.hidden)
+                {
+                    continue;
+                }
+
+                NSAssert([self.delegate respondsToSelector:@selector(lineChartDotsView:dotViewAtHorizontalIndex:atLineIndex:)], @"JBLineChartDotsView // delegate must implement - (UIView *)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView dotViewAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
+                UIView *currentDotView = [self.delegate lineChartDotsView:self dotViewAtHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
                 
-                JBLineChartDotView *dotView = [[JBLineChartDotView alloc] initWithRadius:dotRadius];
-                dotView.center = CGPointMake(lineChartPoint.position.x, fmin(self.bounds.size.height - padding, fmax(padding, lineChartPoint.position.y)));
-                
-                NSAssert([self.delegate respondsToSelector:@selector(lineChartDotsView:colorForDotAtHorizontalIndex:atLineIndex:)], @"JBLineChartDotsView // delegate must implement - (UIColor *)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView colorForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
-                dotView.backgroundColor = [self.delegate lineChartDotsView:self colorForDotAtHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
-                
-                [mutableDotViews addObject:dotView];
-                [self addSubview:dotView];
-                
-                horizontalIndex++;
+                // System dot
+                if (currentDotView == nil)
+                {
+                    NSAssert([self.delegate respondsToSelector:@selector(lineChartDotsView:dotRadiusForLineAtHorizontalIndex:atLineIndex:)], @"JBLineChartDotsView // delegate must implement - (CGFloat)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView dotRadiusForLineAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
+                    CGFloat dotRadius = [self.delegate lineChartDotsView:self dotRadiusForLineAtHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
+                    
+                    currentDotView = [[JBLineChartDotView alloc] initWithRadius:dotRadius];
+                    
+                    NSAssert([self.delegate respondsToSelector:@selector(lineChartDotsView:colorForDotAtHorizontalIndex:atLineIndex:)], @"JBLineChartDotsView // delegate must implement - (UIColor *)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView colorForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
+                    currentDotView.backgroundColor = [self.delegate lineChartDotsView:self colorForDotAtHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
+                }
+
+                currentDotView.center = CGPointMake(lineChartPoint.position.x, fmin(self.bounds.size.height - padding, fmax(padding, lineChartPoint.position.y)));
+                [mutableDotViews addObject:currentDotView];
+                [self addSubview:currentDotView];
+
             }
             [mutableDotViewsDict setObject:[NSArray arrayWithArray:mutableDotViews] forKey:[NSNumber numberWithInteger:lineIndex]];
         }
@@ -1378,22 +1542,40 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
     dispatch_block_t adjustDots = ^{
         [weakSelf.dotViewsDict enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
             NSUInteger horizontalIndex = 0;
-            for (JBLineChartDotView *dotView in (NSArray *)obj)
+            for (UIView *dotView in (NSArray *)obj)
             {
                 if ([key isKindOfClass:[NSNumber class]])
                 {
                     NSInteger lineIndex = [((NSNumber *)key) intValue];
 
-                    if (weakSelf.selectedLineIndex == lineIndex)
+                    // Internal dot
+                    if ([dotView isKindOfClass:[JBLineChartDotView class]])
                     {
-                        NSAssert([self.delegate respondsToSelector:@selector(lineChartDotsView:selectedColorForDotAtHorizontalIndex:atLineIndex:)], @"JBLineChartDotsView // delegate must implement - (UIColor *)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView selectedColorForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
-                        dotView.backgroundColor = [self.delegate lineChartDotsView:self selectedColorForDotAtHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
+                        if (weakSelf.selectedLineIndex == lineIndex)
+                        {
+                            NSAssert([self.delegate respondsToSelector:@selector(lineChartDotsView:selectedColorForDotAtHorizontalIndex:atLineIndex:)], @"JBLineChartDotsView // delegate must implement - (UIColor *)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView selectedColorForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
+                            dotView.backgroundColor = [self.delegate lineChartDotsView:self selectedColorForDotAtHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
+                        }
+                        else
+                        {
+                            NSAssert([self.delegate respondsToSelector:@selector(lineChartDotsView:colorForDotAtHorizontalIndex:atLineIndex:)], @"JBLineChartDotsView // delegate must implement - (UIColor *)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView colorForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
+                            dotView.backgroundColor = [self.delegate lineChartDotsView:self colorForDotAtHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
+                            dotView.alpha = (weakSelf.selectedLineIndex == kJBLineChartDotsViewUnselectedLineIndex) ? 1.0f : 0.0f; // hide dots on off-selection
+                        }
                     }
+                    // Custom dot
                     else
                     {
-                        NSAssert([self.delegate respondsToSelector:@selector(lineChartDotsView:colorForDotAtHorizontalIndex:atLineIndex:)], @"JBLineChartDotsView // delegate must implement - (UIColor *)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView colorForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
-                        dotView.backgroundColor = [self.delegate lineChartDotsView:self colorForDotAtHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
-                        dotView.alpha = (weakSelf.selectedLineIndex == kJBLineChartDotsViewUnselectedLineIndex) ? 1.0f : 0.0f; // hide dots on off-selection
+                        NSAssert([self.delegate respondsToSelector:@selector(lineChartDotsView:shouldHideDotViewOnSelectionAtHorizontalIndex:atLineIndex:)], @"JBLineChartDotsView // delegate must implement - (BOOL)lineChartDotsView:(JBLineChartDotsView *)lineChartDotsView shouldHideDotViewOnSelectionAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex");
+                        BOOL hideDotView = [self.delegate lineChartDotsView:self shouldHideDotViewOnSelectionAtHorizontalIndex:horizontalIndex atLineIndex:lineIndex];
+                        if (weakSelf.selectedLineIndex == lineIndex)
+                        {
+                            dotView.alpha = hideDotView ? 0.0f : 1.0f;
+                        }
+                        else
+                        {
+                            dotView.alpha = 1.0;
+                        }
                     }
                 }
                 horizontalIndex++;
@@ -1426,11 +1608,11 @@ static UIColor *kJBLineChartViewDefaultDotSelectionColor = nil;
 
 - (id)initWithRadius:(CGFloat)radius
 {
-    self = [super initWithFrame:CGRectMake(0, 0, radius, radius)];
+    self = [super initWithFrame:CGRectMake(0, 0, (radius * 2.0f), (radius * 2.0f))];
     if (self)
     {
         self.clipsToBounds = YES;
-        self.layer.cornerRadius = (radius * 0.5);
+        self.layer.cornerRadius = ((radius * 2.0f) * 0.5f);
     }
     return self;
 }

JBChartView.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "JBChartView"
-  s.version      = "2.7.1"
+  s.version      = "2.8.15"
   s.summary      = "Jawbone's iOS-based charting library for both line and bar graphs."
   s.homepage     = "https://github.com/Jawbone/JBChartView"
 
@@ -10,7 +10,7 @@ Pod::Spec.new do |s|
   s.author       = { "Terry Worona" => "tworona@jawbone.com" }
   s.source       = { 
 	:git => "https://github.com/Jawbone/JBChartView.git",
-	:tag => "v2.7.1"
+	:tag => "v2.8.15"
   }
 
   s.platform     = :ios, '6.0'

JBChartViewDemo/JBChartViewDemo.xcodeproj/project.pbxproj

@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		94BDFC3419F933B2007492F6 /* JBLineChartMissingPointsViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 94BDFC3319F933B2007492F6 /* JBLineChartMissingPointsViewController.m */; };
 		9B0725211829822A0052109B /* JBChartListViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 9B0725201829822A0052109B /* JBChartListViewController.m */; };
 		9B2E530518218CF20079B9D2 /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 9B2E530418218CF20079B9D2 /* Foundation.framework */; };
 		9B2E530718218CF20079B9D2 /* CoreGraphics.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 9B2E530618218CF20079B9D2 /* CoreGraphics.framework */; };
@@ -45,6 +46,8 @@
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
+		94BDFC3219F933B2007492F6 /* JBLineChartMissingPointsViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JBLineChartMissingPointsViewController.h; sourceTree = "<group>"; };
+		94BDFC3319F933B2007492F6 /* JBLineChartMissingPointsViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = JBLineChartMissingPointsViewController.m; sourceTree = "<group>"; };
 		9B07251F1829822A0052109B /* JBChartListViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JBChartListViewController.h; sourceTree = "<group>"; };
 		9B0725201829822A0052109B /* JBChartListViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = JBChartListViewController.m; sourceTree = "<group>"; };
 		9B2E530118218CF20079B9D2 /* JBChartViewDemo.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = JBChartViewDemo.app; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -196,6 +199,8 @@
 				9B6A68DD1829BE63006DB3BF /* JBBarChartViewController.m */,
 				9B07251F1829822A0052109B /* JBChartListViewController.h */,
 				9B0725201829822A0052109B /* JBChartListViewController.m */,
+				94BDFC3219F933B2007492F6 /* JBLineChartMissingPointsViewController.h */,
+				94BDFC3319F933B2007492F6 /* JBLineChartMissingPointsViewController.m */,
 				9B6A68DF1829BED5006DB3BF /* JBLineChartViewController.h */,
 				9B6A68E01829BED5006DB3BF /* JBLineChartViewController.m */,
 			);
@@ -407,6 +412,7 @@
 				9B603D4E182C7163000A76D0 /* JBBaseTableViewController.m in Sources */,
 				9B6A68DE1829BE63006DB3BF /* JBBarChartViewController.m in Sources */,
 				9B4437AD18D7686800682EF0 /* JBChartTooltipTipView.m in Sources */,
+				94BDFC3419F933B2007492F6 /* JBLineChartMissingPointsViewController.m in Sources */,
 				9BE0B0AD182AD26400232023 /* JBLineChartView.m in Sources */,
 				9BEE694618D2789E005D9BA7 /* JBBaseChartViewController.m in Sources */,
 				9B6A68E11829BED5006DB3BF /* JBLineChartViewController.m in Sources */,

JBChartViewDemo/JBChartViewDemo/Constants/JBStringConstants.h

@@ -38,3 +38,12 @@
 #define kJBStringLabelHours localize(@"label.hours", @"h")
 #define kJBStringLabelMoon localize(@"label.moon", @"Moon")
 #define kJBStringLabelSun localize(@"label.sun", @"Sun")
+
+#pragma mark - Labels (Missing Points Line Chart)
+
+#define kJBStringLabel2014 localize(@"label.2014", @"2014")
+#define kJBStringLabelCyclingDistances localize(@"label.cycling.distances", @"Cycling Distances")
+#define kJBStringLabelCyclingCurrentLastWeek2014 localize(@"label.cycling.current.last.week.2014", @"Current/Last Week - 2014")
+#define kJBStringLabelKm2014 localize(@"label.km", @"Km")
+#define kJBStringLabelLastWeek localize(@"label.last.week", @"Last Week")
+#define kJBStringLabelCurrentWeek localize(@"label.current.week", @"Current Week")

JBChartViewDemo/JBChartViewDemo/Controllers/Base/JBBaseChartViewController.m

@@ -43,6 +43,8 @@ CGFloat const kJBBaseChartViewControllerAnimationDuration = 0.25f;
         [self.view addSubview:self.tooltipView];
     }
     
+    [self.view bringSubviewToFront:self.tooltipView];
+    
     if (!self.tooltipTipView)
     {
         self.tooltipTipView = [[JBChartTooltipTipView alloc] init];
@@ -50,6 +52,8 @@ CGFloat const kJBBaseChartViewControllerAnimationDuration = 0.25f;
         [self.view addSubview:self.tooltipTipView];
     }
     
+    [self.view bringSubviewToFront:self.tooltipTipView];
+    
     dispatch_block_t adjustTooltipPosition = ^{
         CGPoint originalTouchPoint = [self.view convertPoint:touchPoint fromView:chartView];
         CGPoint convertedTouchPoint = originalTouchPoint; // modified

JBChartViewDemo/JBChartViewDemo/Controllers/Base/JBBaseTableViewController.m

@@ -28,6 +28,12 @@
     [self.view addSubview:self.tableView];
 }
 
+- (void)dealloc
+{
+    self.tableView.delegate = nil;
+    self.tableView.dataSource = nil;
+}
+
 #pragma mark - UITableViewDataSource
 
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

JBChartViewDemo/JBChartViewDemo/Controllers/JBAreaChartViewController.m

@@ -84,6 +84,12 @@ NSString * const kJBAreaChartViewControllerNavButtonViewKey = @"view";
     return self;
 }
 
+- (void)dealloc
+{
+    _lineChartView.delegate = nil;
+    _lineChartView.dataSource = nil;
+}
+
 #pragma mark - Data
 
 - (void)initFakeData
@@ -235,7 +241,7 @@ NSString * const kJBAreaChartViewControllerNavButtonViewKey = @"view";
     return kJBAreaChartViewControllerChartLineWidth;
 }
 
-- (UIColor *)verticalSelectionColorForLineChartView:(JBLineChartView *)lineChartView
+- (UIColor *)lineChartView:(JBLineChartView *)lineChartView verticalSelectionColorForLineAtLineIndex:(NSUInteger)lineIndex
 {
     return [UIColor whiteColor];
 }

JBChartViewDemo/JBChartViewDemo/Controllers/JBBarChartViewController.m

@@ -18,10 +18,10 @@
 CGFloat const kJBBarChartViewControllerChartHeight = 250.0f;
 CGFloat const kJBBarChartViewControllerChartPadding = 10.0f;
 CGFloat const kJBBarChartViewControllerChartHeaderHeight = 80.0f;
-CGFloat const kJBBarChartViewControllerChartHeaderPadding = 10.0f;
+CGFloat const kJBBarChartViewControllerChartHeaderPadding = 20.0f;
 CGFloat const kJBBarChartViewControllerChartFooterHeight = 25.0f;
 CGFloat const kJBBarChartViewControllerChartFooterPadding = 5.0f;
-NSUInteger kJBBarChartViewControllerBarPadding = 1;
+CGFloat const kJBBarChartViewControllerBarPadding = 1.0f;
 NSInteger const kJBBarChartViewControllerNumBars = 12;
 NSInteger const kJBBarChartViewControllerMaxBarHeight = 10;
 NSInteger const kJBBarChartViewControllerMinBarHeight = 5;
@@ -78,6 +78,12 @@ NSString * const kJBBarChartViewControllerNavButtonViewKey = @"view";
     return self;
 }
 
+- (void)dealloc
+{
+    _barChartView.delegate = nil;
+    _barChartView.dataSource = nil;
+}
+
 #pragma mark - Date
 
 - (void)initFakeData
@@ -85,7 +91,7 @@ NSString * const kJBBarChartViewControllerNavButtonViewKey = @"view";
     NSMutableArray *mutableChartData = [NSMutableArray array];
     for (int i=0; i<kJBBarChartViewControllerNumBars; i++)
     {
-        NSInteger delta = (kJBBarChartViewControllerNumBars - abs((kJBBarChartViewControllerNumBars - i) - i)) + 2;
+        NSInteger delta = (kJBBarChartViewControllerNumBars - labs((kJBBarChartViewControllerNumBars - i) - i)) + 2;
         [mutableChartData addObject:[NSNumber numberWithFloat:MAX((delta * kJBBarChartViewControllerMinBarHeight), arc4random() % (delta * kJBBarChartViewControllerMaxBarHeight))]];
 
     }
@@ -108,6 +114,7 @@ NSString * const kJBBarChartViewControllerNavButtonViewKey = @"view";
     self.barChartView.dataSource = self;
     self.barChartView.headerPadding = kJBBarChartViewControllerChartHeaderPadding;
     self.barChartView.minimumValue = 0.0f;
+    self.barChartView.inverted = NO;
     self.barChartView.backgroundColor = kJBColorBarChartBackground;
     
     JBChartHeaderView *headerView = [[JBChartHeaderView alloc] initWithFrame:CGRectMake(kJBBarChartViewControllerChartPadding, ceil(self.view.bounds.size.height * 0.5) - ceil(kJBBarChartViewControllerChartHeaderHeight * 0.5), self.view.bounds.size.width - (kJBBarChartViewControllerChartPadding * 2), kJBBarChartViewControllerChartHeaderHeight)];
@@ -137,6 +144,18 @@ NSString * const kJBBarChartViewControllerNavButtonViewKey = @"view";
     [self.barChartView setState:JBChartViewStateExpanded];
 }
 
+#pragma mark - JBChartViewDataSource
+
+- (BOOL)shouldExtendSelectionViewIntoHeaderPaddingForChartView:(JBChartView *)chartView
+{
+    return YES;
+}
+
+- (BOOL)shouldExtendSelectionViewIntoFooterPaddingForChartView:(JBChartView *)chartView
+{
+    return NO;
+}
+
 #pragma mark - JBBarChartViewDataSource
 
 - (NSUInteger)numberOfBarsInBarChartView:(JBBarChartView *)barChartView
@@ -177,7 +196,7 @@ NSString * const kJBBarChartViewControllerNavButtonViewKey = @"view";
     return [UIColor whiteColor];
 }
 
-- (NSUInteger)barPaddingForBarChartView:(JBBarChartView *)barChartView
+- (CGFloat)barPaddingForBarChartView:(JBBarChartView *)barChartView
 {
     return kJBBarChartViewControllerBarPadding;
 }

JBChartViewDemo/JBChartViewDemo/Controllers/JBChartListViewController.m

@@ -12,13 +12,15 @@
 #import "JBBarChartViewController.h"
 #import "JBLineChartViewController.h"
 #import "JBAreaChartViewController.h"
+#import "JBLineChartMissingPointsViewController.h"
 
 // Views
 #import "JBChartTableCell.h"
 
 typedef NS_ENUM(NSInteger, JBChartListViewControllerRow){
 	JBChartListViewControllerRowLineChart,
-    JBChartListViewControllerRowBarChart,
+	JBChartListViewControllerRowLineChartMissingPoints,
+	JBChartListViewControllerRowBarChart,
     JBChartListViewControllerRowAreaChart,
     JBChartListViewControllerRowCount
 };
@@ -63,6 +65,11 @@ NSInteger const kJBChartListViewControllerCellHeight = 100;
             detailText = kJBStringLabelSanFrancisco2013;
             type = JBChartTableCellTypeLineChart;
             break;
+		case JBChartListViewControllerRowLineChartMissingPoints:
+			text = kJBStringLabelCyclingDistances;
+			detailText = kJBStringLabelCyclingCurrentLastWeek2014;
+			type = JBChartTableCellTypeLineChart;
+			break;
         case JBChartListViewControllerRowBarChart:
             text = kJBStringLabelAverageMonthlyTemperature;
             detailText = kJBStringLabelWorldwide2012;
@@ -99,6 +106,11 @@ NSInteger const kJBChartListViewControllerCellHeight = 100;
         JBLineChartViewController *lineChartController = [[JBLineChartViewController alloc] init];
         [self.navigationController pushViewController:lineChartController animated:YES];
     }
+	else if (indexPath.row == JBChartListViewControllerRowLineChartMissingPoints)
+	{
+		JBLineChartMissingPointsViewController *lineChartController = [[JBLineChartMissingPointsViewController alloc] init];
+		[self.navigationController pushViewController:lineChartController animated:YES];
+	}
     else if (indexPath.row == JBChartListViewControllerRowBarChart)
     {
         JBBarChartViewController *barChartController = [[JBBarChartViewController alloc] init];

JBChartViewDemo/JBChartViewDemo/Controllers/JBLineChartMissingPointsViewController.h

@@ -0,0 +1,13 @@
+//
+//  JBLineChartMissingPointsViewController.h
+//  JBChartViewDemo
+//
+//  Created by Sebastian Opel on 23.10.14.
+//  Copyright (c) 2014 Jawbone. All rights reserved.
+//
+
+#import "JBBaseChartViewController.h"
+
+@interface JBLineChartMissingPointsViewController : JBBaseChartViewController
+
+@end

JBChartViewDemo/JBChartViewDemo/Controllers/JBLineChartMissingPointsViewController.m

@@ -0,0 +1,309 @@
+//
+//  JBLineChartMissingPointsViewController.m
+//  JBChartViewDemo
+//
+//  Created by Sebastian Opel on 23.10.14.
+//  Copyright (c) 2014 Jawbone. All rights reserved.
+//
+
+#import "JBLineChartMissingPointsViewController.h"
+
+// Views
+#import "JBLineChartView.h"
+#import "JBChartHeaderView.h"
+#import "JBLineChartFooterView.h"
+#import "JBChartInformationView.h"
+
+#define ARC4RANDOM_MAX 0x010000000
+
+typedef NS_ENUM(NSInteger, JBLineChartLine){
+    JBLineChartLineSolid,
+    JBLineChartLineDashed,
+    JBLineChartLineCount
+};
+
+// Numerics
+CGFloat const kJBLineChartMissingPointsViewControllerChartHeight = 250.0f;
+CGFloat const kJBLineChartMissingPointsViewControllerChartPadding = 10.0f;
+CGFloat const kJBLineChartMissingPointsViewControllerChartHeaderHeight = 75.0f;
+CGFloat const kJBLineChartMissingPointsViewControllerChartHeaderPadding = 20.0f;
+CGFloat const kJBLineChartMissingPointsViewControllerChartFooterHeight = 20.0f;
+CGFloat const kJBLineChartMissingPointsViewControllerChartSolidLineWidth = 6.0f;
+CGFloat const kJBLineChartMissingPointsViewControllerChartSolidLineDotRadius = 5.0f;
+CGFloat const kJBLineChartMissingPointsViewControllerChartDashedLineWidth = 2.0f;
+NSInteger const kJBLineChartMissingPointsViewControllerMaxNumChartPoints = 7;
+
+// Strings
+NSString * const kJBLineChartMissingPointsViewControllerNavButtonViewKey = @"view";
+
+@interface JBLineChartMissingPointsViewController () <JBLineChartViewDelegate, JBLineChartViewDataSource>
+
+@property (nonatomic, strong) JBLineChartView *lineChartView;
+@property (nonatomic, strong) JBChartInformationView *informationView;
+@property (nonatomic, strong) NSArray *chartData;
+@property (nonatomic, strong) NSArray *daysOfWeek;
+
+// Buttons
+- (void)chartToggleButtonPressed:(id)sender;
+
+// Helpers
+- (void)initFakeData;
+- (NSArray *)largestLineData; // largest collection of fake line data
+
+@end
+
+@implementation JBLineChartMissingPointsViewController
+
+#pragma mark - Alloc/Init
+
+- (id)init
+{
+    self = [super init];
+    if (self)
+    {
+        [self initFakeData];
+    }
+    return self;
+}
+
+- (id)initWithCoder:(NSCoder *)aDecoder
+{
+    self = [super initWithCoder:aDecoder];
+    if (self)
+    {
+        [self initFakeData];
+    }
+    return self;
+}
+
+- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
+{
+    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
+    if (self)
+    {
+        [self initFakeData];
+    }
+    return self;
+}
+
+- (void)dealloc
+{
+    _lineChartView.delegate = nil;
+    _lineChartView.dataSource = nil;
+}
+
+#pragma mark - Data
+
+- (void)initFakeData
+{
+    NSMutableArray *mutableLineCharts = [NSMutableArray array];
+    for (int lineIndex=0; lineIndex<JBLineChartLineCount; lineIndex++)
+    {
+        NSMutableArray *mutableChartData = [NSMutableArray array];
+        for (int i=0; i<kJBLineChartMissingPointsViewControllerMaxNumChartPoints; i++)
+        {
+            if(i < 2 || i > 5 || i == 3)
+            {
+                [mutableChartData addObject:[NSNumber numberWithFloat:NAN]];
+            } else {
+                [mutableChartData addObject:[NSNumber numberWithFloat:((double)arc4random() / ARC4RANDOM_MAX)]]; // random number between 0 and 1
+            }
+        }
+        [mutableLineCharts addObject:mutableChartData];
+    }
+    _chartData = [NSArray arrayWithArray:mutableLineCharts];
+    _daysOfWeek = [[[NSDateFormatter alloc] init] shortWeekdaySymbols];
+}
+
+- (NSArray *)largestLineData
+{
+    NSArray *largestLineData = nil;
+    for (NSArray *lineData in self.chartData)
+    {
+        if ([lineData count] > [largestLineData count])
+        {
+            largestLineData = lineData;
+        }
+    }
+    return largestLineData;
+}
+
+#pragma mark - View Lifecycle
+
+- (void)loadView
+{
+    [super loadView];
+    
+    self.view.backgroundColor = kJBColorLineChartControllerBackground;
+    self.navigationItem.rightBarButtonItem = [self chartToggleButtonWithTarget:self action:@selector(chartToggleButtonPressed:)];
+    
+    self.lineChartView = [[JBLineChartView alloc] init];
+    self.lineChartView.frame = CGRectMake(kJBLineChartMissingPointsViewControllerChartPadding, kJBLineChartMissingPointsViewControllerChartPadding, self.view.bounds.size.width - (kJBLineChartMissingPointsViewControllerChartPadding * 2), kJBLineChartMissingPointsViewControllerChartHeight);
+    self.lineChartView.delegate = self;
+    self.lineChartView.dataSource = self;
+    self.lineChartView.headerPadding = kJBLineChartMissingPointsViewControllerChartHeaderPadding;
+    self.lineChartView.backgroundColor = kJBColorLineChartBackground;
+    
+    JBChartHeaderView *headerView = [[JBChartHeaderView alloc] initWithFrame:CGRectMake(kJBLineChartMissingPointsViewControllerChartPadding, ceil(self.view.bounds.size.height * 0.5) - ceil(kJBLineChartMissingPointsViewControllerChartHeaderHeight * 0.5), self.view.bounds.size.width - (kJBLineChartMissingPointsViewControllerChartPadding * 2), kJBLineChartMissingPointsViewControllerChartHeaderHeight)];
+    headerView.titleLabel.text = [kJBStringLabelCyclingDistances uppercaseString];
+    headerView.titleLabel.textColor = kJBColorLineChartHeader;
+    headerView.titleLabel.shadowColor = [UIColor colorWithWhite:1.0 alpha:0.25];
+    headerView.titleLabel.shadowOffset = CGSizeMake(0, 1);
+    headerView.subtitleLabel.text = kJBStringLabel2014;
+    headerView.subtitleLabel.textColor = kJBColorLineChartHeader;
+    headerView.subtitleLabel.shadowColor = [UIColor colorWithWhite:1.0 alpha:0.25];
+    headerView.subtitleLabel.shadowOffset = CGSizeMake(0, 1);
+    headerView.separatorColor = kJBColorLineChartHeaderSeparatorColor;
+    self.lineChartView.headerView = headerView;
+    
+    JBLineChartFooterView *footerView = [[JBLineChartFooterView alloc] initWithFrame:CGRectMake(kJBLineChartMissingPointsViewControllerChartPadding, ceil(self.view.bounds.size.height * 0.5) - ceil(kJBLineChartMissingPointsViewControllerChartFooterHeight * 0.5), self.view.bounds.size.width - (kJBLineChartMissingPointsViewControllerChartPadding * 2), kJBLineChartMissingPointsViewControllerChartFooterHeight)];
+    footerView.backgroundColor = [UIColor clearColor];
+    footerView.leftLabel.text = [[self.daysOfWeek firstObject] uppercaseString];
+    footerView.leftLabel.textColor = [UIColor whiteColor];
+    footerView.rightLabel.text = [[self.daysOfWeek lastObject] uppercaseString];;
+    footerView.rightLabel.textColor = [UIColor whiteColor];
+    footerView.sectionCount = [[self largestLineData] count];
+    self.lineChartView.footerView = footerView;
+    
+    [self.view addSubview:self.lineChartView];
+    
+    self.informationView = [[JBChartInformationView alloc] initWithFrame:CGRectMake(self.view.bounds.origin.x, CGRectGetMaxY(self.lineChartView.frame), self.view.bounds.size.width, self.view.bounds.size.height - CGRectGetMaxY(self.lineChartView.frame) - CGRectGetMaxY(self.navigationController.navigationBar.frame))];
+    [self.informationView setValueAndUnitTextColor:[UIColor colorWithWhite:1.0 alpha:0.75]];
+    [self.informationView setTitleTextColor:kJBColorLineChartHeader];
+    [self.informationView setTextShadowColor:nil];
+    [self.informationView setSeparatorColor:kJBColorLineChartHeaderSeparatorColor];
+    [self.view addSubview:self.informationView];
+    
+    [self.lineChartView reloadData];
+}
+
+- (void)viewWillAppear:(BOOL)animated
+{
+    [super viewWillAppear:animated];
+    [self.lineChartView setState:JBChartViewStateExpanded];
+}
+
+#pragma mark - JBChartViewDataSource
+
+- (BOOL)shouldExtendSelectionViewIntoHeaderPaddingForChartView:(JBChartView *)chartView
+{
+    return YES;
+}
+
+- (BOOL)shouldExtendSelectionViewIntoFooterPaddingForChartView:(JBChartView *)chartView
+{
+    return NO;
+}
+
+#pragma mark - JBLineChartViewDataSource
+
+- (NSUInteger)numberOfLinesInLineChartView:(JBLineChartView *)lineChartView
+{
+    return [self.chartData count];
+}
+
+- (NSUInteger)lineChartView:(JBLineChartView *)lineChartView numberOfVerticalValuesAtLineIndex:(NSUInteger)lineIndex
+{
+    return [[self.chartData objectAtIndex:lineIndex] count];
+}
+
+- (BOOL)lineChartView:(JBLineChartView *)lineChartView showsDotsForLineAtLineIndex:(NSUInteger)lineIndex
+{
+    return lineIndex == JBLineChartViewLineStyleDashed;
+}
+
+- (BOOL)lineChartView:(JBLineChartView *)lineChartView smoothLineAtLineIndex:(NSUInteger)lineIndex
+{
+    return lineIndex == JBLineChartViewLineStyleSolid;
+}
+
+#pragma mark - JBLineChartViewDelegate
+
+- (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex
+{
+    return [[[self.chartData objectAtIndex:lineIndex] objectAtIndex:horizontalIndex] floatValue];
+}
+
+- (void)lineChartView:(JBLineChartView *)lineChartView didSelectLineAtIndex:(NSUInteger)lineIndex horizontalIndex:(NSUInteger)horizontalIndex touchPoint:(CGPoint)touchPoint
+{
+    NSNumber *valueNumber = [[self.chartData objectAtIndex:lineIndex] objectAtIndex:horizontalIndex];
+    if(isnan([valueNumber floatValue])) {
+        [self.informationView setHidden:YES animated:YES];
+    } else {
+        [self.informationView setValueText:[NSString stringWithFormat:@"%.2f", [valueNumber floatValue]] unitText:kJBStringLabelKm2014];
+        [self.informationView setTitleText:lineIndex == JBLineChartLineSolid ? kJBStringLabelLastWeek : kJBStringLabelCurrentWeek];
+        [self.informationView setHidden:NO animated:YES];
+    }
+    [self setTooltipVisible:YES animated:YES atTouchPoint:touchPoint];
+    [self.tooltipView setText:[[self.daysOfWeek objectAtIndex:horizontalIndex] uppercaseString]];
+}
+
+- (void)didDeselectLineInLineChartView:(JBLineChartView *)lineChartView
+{
+    [self.informationView setHidden:YES animated:YES];
+    [self setTooltipVisible:NO animated:YES];
+}
+
+- (UIColor *)lineChartView:(JBLineChartView *)lineChartView colorForLineAtLineIndex:(NSUInteger)lineIndex
+{
+    return (lineIndex == JBLineChartLineSolid) ? kJBColorLineChartDefaultSolidLineColor: kJBColorLineChartDefaultDashedLineColor;
+}
+
+- (UIColor *)lineChartView:(JBLineChartView *)lineChartView colorForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex
+{
+    return (lineIndex == JBLineChartLineSolid) ? kJBColorLineChartDefaultSolidLineColor: kJBColorLineChartDefaultDashedLineColor;
+}
+
+- (CGFloat)lineChartView:(JBLineChartView *)lineChartView widthForLineAtLineIndex:(NSUInteger)lineIndex
+{
+    return (lineIndex == JBLineChartLineSolid) ? kJBLineChartMissingPointsViewControllerChartSolidLineWidth: kJBLineChartMissingPointsViewControllerChartDashedLineWidth;
+}
+
+- (CGFloat)lineChartView:(JBLineChartView *)lineChartView dotRadiusForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex
+{
+    return (lineIndex == JBLineChartLineSolid) ? 0.0 : kJBLineChartMissingPointsViewControllerChartSolidLineDotRadius;
+}
+
+- (UIColor *)lineChartView:(JBLineChartView *)lineChartView verticalSelectionColorForLineAtLineIndex:(NSUInteger)lineIndex
+{
+    return [UIColor whiteColor];
+}
+
+- (UIColor *)lineChartView:(JBLineChartView *)lineChartView selectionColorForLineAtLineIndex:(NSUInteger)lineIndex
+{
+    return (lineIndex == JBLineChartLineSolid) ? kJBColorLineChartDefaultSolidSelectedLineColor: kJBColorLineChartDefaultDashedSelectedLineColor;
+}
+
+- (UIColor *)lineChartView:(JBLineChartView *)lineChartView selectionColorForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex
+{
+    return (lineIndex == JBLineChartLineSolid) ? kJBColorLineChartDefaultSolidSelectedLineColor: kJBColorLineChartDefaultDashedSelectedLineColor;
+}
+
+- (JBLineChartViewLineStyle)lineChartView:(JBLineChartView *)lineChartView lineStyleForLineAtLineIndex:(NSUInteger)lineIndex
+{
+    return (lineIndex == JBLineChartLineSolid) ? JBLineChartViewLineStyleSolid : JBLineChartViewLineStyleDashed;
+}
+
+#pragma mark - Buttons
+
+- (void)chartToggleButtonPressed:(id)sender
+{
+    UIView *buttonImageView = [self.navigationItem.rightBarButtonItem valueForKey:kJBLineChartMissingPointsViewControllerNavButtonViewKey];
+    buttonImageView.userInteractionEnabled = NO;
+    
+    CGAffineTransform transform = self.lineChartView.state == JBChartViewStateExpanded ? CGAffineTransformMakeRotation(M_PI) : CGAffineTransformMakeRotation(0);
+    buttonImageView.transform = transform;
+    
+    [self.lineChartView setState:self.lineChartView.state == JBChartViewStateExpanded ? JBChartViewStateCollapsed : JBChartViewStateExpanded animated:YES callback:^{
+        buttonImageView.userInteractionEnabled = YES;
+    }];
+}
+
+#pragma mark - Overrides
+
+- (JBChartView *)chartView
+{
+    return self.lineChartView;
+}
+
+@end

JBChartViewDemo/JBChartViewDemo/Controllers/JBLineChartViewController.m

@@ -29,6 +29,7 @@ CGFloat const kJBLineChartViewControllerChartHeaderHeight = 75.0f;
 CGFloat const kJBLineChartViewControllerChartHeaderPadding = 20.0f;
 CGFloat const kJBLineChartViewControllerChartFooterHeight = 20.0f;
 CGFloat const kJBLineChartViewControllerChartSolidLineWidth = 6.0f;
+CGFloat const kJBLineChartViewControllerChartSolidLineDotRadius = 5.0f;
 CGFloat const kJBLineChartViewControllerChartDashedLineWidth = 2.0f;
 NSInteger const kJBLineChartViewControllerMaxNumChartPoints = 7;
 
@@ -85,6 +86,12 @@ NSString * const kJBLineChartViewControllerNavButtonViewKey = @"view";
     return self;
 }
 
+- (void)dealloc
+{
+    _lineChartView.delegate = nil;
+    _lineChartView.dataSource = nil;
+}
+
 #pragma mark - Data
 
 - (void)initFakeData
@@ -171,6 +178,18 @@ NSString * const kJBLineChartViewControllerNavButtonViewKey = @"view";
     [self.lineChartView setState:JBChartViewStateExpanded];
 }
 
+#pragma mark - JBChartViewDataSource
+
+- (BOOL)shouldExtendSelectionViewIntoHeaderPaddingForChartView:(JBChartView *)chartView
+{
+    return YES;
+}
+
+- (BOOL)shouldExtendSelectionViewIntoFooterPaddingForChartView:(JBChartView *)chartView
+{
+    return NO;
+}
+
 #pragma mark - JBLineChartViewDataSource
 
 - (NSUInteger)numberOfLinesInLineChartView:(JBLineChartView *)lineChartView
@@ -231,12 +250,12 @@ NSString * const kJBLineChartViewControllerNavButtonViewKey = @"view";
     return (lineIndex == JBLineChartLineSolid) ? kJBLineChartViewControllerChartSolidLineWidth: kJBLineChartViewControllerChartDashedLineWidth;
 }
 
-- (CGFloat)lineChartView:(JBLineChartView *)lineChartView dotRadiusForLineAtLineIndex:(NSUInteger)lineIndex
+- (CGFloat)lineChartView:(JBLineChartView *)lineChartView dotRadiusForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex
 {
-    return (lineIndex == JBLineChartLineSolid) ? 0.0: (kJBLineChartViewControllerChartDashedLineWidth * 4);
+    return (lineIndex == JBLineChartLineSolid) ? 0.0: kJBLineChartViewControllerChartSolidLineDotRadius;
 }
 
-- (UIColor *)verticalSelectionColorForLineChartView:(JBLineChartView *)lineChartView
+- (UIColor *)lineChartView:(JBLineChartView *)lineChartView verticalSelectionColorForLineAtLineIndex:(NSUInteger)lineIndex
 {
     return [UIColor whiteColor];
 }

README.md

@@ -38,12 +38,8 @@ Build and run the <i>JBChartViewDemo</i> project in Xcode. The demo demonstrates
 
 Simply add the following line to your <code>Podfile</code>:
 
-	pod 'JBChartView'
-	
-Your Podfile should look something like:
-
 	platform :ios, '6.0'
-	pod 'JBChartView', '~> 2.7.1'
+	pod 'JBChartView'
 	
 ### The Old School Way
 
@@ -62,9 +58,9 @@ All JBChartView implementations have a similiar data source and delgate pattern
 To use JBCartView in a Swift project add the following to your bridging header (JBChartView-Bridging-Header.h):
 
 	#import <UIKit/UIKit.h>
-	#import "JBChartView/JBChartView.h"
-	#import "JBChartView/JBBarChartView.h"
-	#import "JBChartView/JBLineChartView.h"
+	#import "JBChartView.h"
+	#import "JBBarChartView.h"
+	#import "JBLineChartView.h"
 
 For more information about adding bridging headers see <a href="https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/BuildingCocoaApps/MixandMatch.html" target="_blank">Swift and Objective-C in the Same Project</a>.
 
@@ -76,6 +72,15 @@ To initialize a <i>JBBarChartView</i>, you only need a few lines of code (see be
     barChartView.dataSource = self;
     barChartView.delegate = self;
     [self addSubview:barChartView];
+
+Just like you would for a `UITableView`, ensure you clear these properties in your `dealloc`:
+
+	- (void)dealloc
+	{
+		JBBarChartView *barChartView = ...; // i.e. _barChartView
+		barChartView.delegate = nil;
+		barChartView.dataSource = nil;
+	}
     
 At a minimum, you need to inform the data source how many bars are in the chart:
 
@@ -86,7 +91,7 @@ At a minimum, you need to inform the data source how many bars are in the chart:
 
 Secondly, you need to inform the delegate the height of each bar (automatically normalized across the entire chart):
     
-    - (CGFloat)barChartView:(JBBarChartView *)barChartView heightForBarViewAtAtIndex:(NSUInteger)index
+    - (CGFloat)barChartView:(JBBarChartView *)barChartView heightForBarViewAtIndex:(NSUInteger)index
     {
 		return ...; // height of bar at index
 	}
@@ -95,15 +100,26 @@ Lastly, ensure you have set the *frame* of your barChartView & call *reloadData*
 
 	barChartView.frame = CGRectMake( ... );
 	[barChartView reloadData];
+	
+**Note**: subsequent changes to the chart's frame will not invoke *reloadData*; it must be called directly afterwards for any changes to take effect. 
     
 #### JBLineChartView
 
 Similiarily, to initialize a JBLineChartView, you only need a few lines of code (see below). Line charts can also be initialized via a <b>nib</b> or with a <b>frame</b>.
 
 	JBLineChartView *lineChartView = [[JBLineChartView alloc] init];
-    lineChartView.dataSource = self;
-    lineChartView.delegate = self;
-    [self addSubview:lineChartView];
+	lineChartView.dataSource = self;
+	lineChartView.delegate = self;
+	[self addSubview:lineChartView];
+
+Just like you would for a `UITableView`, ensure you clear these properties in your `dealloc`:
+
+	- (void)dealloc
+	{
+		JBLineChartView *lineChartView = ...; // i.e. _lineChartView
+		lineChartView.delegate = nil;
+		lineChartView.dataSource = nil;
+	}
 
 At a minimum, you need to inform the data source how many lines and vertical data points (for each line) are in the chart:
 
@@ -124,11 +140,16 @@ Secondly, you need to inform the delegate of the y-position of each point (autom
 		return ...; // y-position (y-axis) of point at horizontalIndex (x-axis)
 	}
 
+**Note**: You can return NAN instead of CGFloat to indicate missing values. The chart's line will begin at the first non-NAN value and end at the last non-NAN value. The line will interopolate any NAN values in between (ie. the line will not be interrupted).
+
+	return [[NSNumber numberWithFloat:NAN] floatValue];
+
 Lastly, ensure you have set the *frame* of your lineChartView & call *reloadData* at least once:
 
 	lineChartView.frame = CGRectMake( ... );
 	[lineChartView reloadData];
 
+**Note**: subsequent changes to the chart's frame will not invoke *reloadData*; it must be called directly afterwards for any changes to take effect. 
 	
 ## Customization
 
@@ -150,6 +171,10 @@ Lastly, any JBChartView subclass can be collapsed or expanded programmatically v
 
 #### JBBarChartView
 
+A bar chart can be inverted such that it's orientation is top->down (including the selection view) by setting the following property:
+
+	@property (nonatomic, assign, getter=isInverted) BOOL inverted;
+
 By default, a chart's bars will be black and flat. They can be customized by supplying a UIView subclass through the <i>optional</i> protocol:
 
 	- (UIView *)barChartView:(JBBarChartView *)barChartView barViewAtIndex:(NSUInteger)index
@@ -208,7 +233,7 @@ The color, width and style of each line in the chart can be customized via the <
 	
 Furthermore, the color and width of the selection view along with the color of the selected line can be customized via the <i>optional</i> protocols:
 
-	- (UIColor *)verticalSelectionColorForLineChartView:(JBLineChartView *)lineChartView
+	- (UIColor *)lineChartView:(JBLineChartView *)lineChartView verticalSelectionColorForLineAtLineIndex:(NSUInteger)lineIndex
 	{
 		return ...; // color of selection view
 	}
@@ -232,9 +257,9 @@ By default, each line will not show dots for each point. To enable this on a per
 
 	- (BOOL)lineChartView:(JBLineChartView *)lineChartView showsDotsForLineAtLineIndex:(NSUInteger)lineIndex;
 
-To customize the size of each dot (default 3x the line width), implement:
+To the radius of each dot (default is 6x the line width, or 3x the diameter), implement:
 
-	- (CGFloat)lineChartView:(JBLineChartView *)lineChartView dotRadiusForLineAtLineIndex:(NSUInteger)lineIndex;
+	- (CGFloat)lineChartView:(JBLineChartView *)lineChartView dotRadiusForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex;
 	
 To customize the color of each dot during selection and non-selection events (default is white and black respectively), implement:
 
@@ -242,6 +267,14 @@ To customize the color of each dot during selection and non-selection events (de
 
 	- (UIColor *)lineChartView:(JBLineChartView *)lineChartView selectionColorForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex;
 	
+Alternatively, you can supply your own UIView instead of using the default impelmentation:
+
+	- (UIView *)lineChartView:(JBLineChartView *)lineChartView dotViewAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex;
+	
+Custom dot views are automatically shown when selected unless the following is implemented:
+
+    - (BOOL)lineChartView:(JBLineChartView *)lineChartView shouldHideDotViewOnSelectionAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex;
+		
 As well, by default, each line will have squared off end caps and connection points. To enable rounded connections and end caps:
 
 	- (BOOL)lineChartView:(JBLineChartView *)lineChartView smoothLineAtLineIndex:(NSUInteger)lineIndex;