updated read me and pod spec

Fixes small typos in README

Classes/JBBarChartView.m

@@ -220,7 +220,7 @@ static UIColor *kJBBarChartViewDefaultBarColor = nil;
         return 0;
     }
     
-    return ceil(((value - minHeight) / (maxHeight - minHeight)) * [self availableHeight]);
+    return ((value - minHeight) / (maxHeight - minHeight)) * [self availableHeight];
 }
 
 - (CGFloat)maxHeight

Classes/JBChartView.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "JBChartView"
-  s.version      = "1.1.2"
+  s.version      = "1.1.3"
   s.summary      = "Jawbone's iOS-based charting library for both line and bar graphs."
   s.homepage     = "https://github.com/Jawbone/JBChartView"
 
@@ -8,7 +8,7 @@ Pod::Spec.new do |s|
   s.author       = { "Terry Worona" => "tworona@jawbone.com" }
   s.source       = { 
 	:git => "https://github.com/Jawbone/JBChartView.git",
-	:tag => "v1.1.2"
+	:tag => "v1.1.3"
   }
 
   s.platform     = :ios, '7.0'

Classes/JBLineChartView.m

@@ -215,7 +215,7 @@ static UIColor *kJBLineChartViewDefaultLineColor = nil;
         return 0;
     }
     
-    return ceil(((rawHeight - minHeight) / (maxHeight - minHeight)) * [self availableHeight]);
+    return ((rawHeight - minHeight) / (maxHeight - minHeight)) * [self availableHeight];
 }
 
 - (CGFloat)availableHeight
@@ -225,16 +225,20 @@ static UIColor *kJBLineChartViewDefaultLineColor = nil;
 
 - (CGFloat)maxHeight
 {
-    NSAssert([self.delegate respondsToSelector:@selector(lineChartView:heightForIndex:)], @"JBLineChartView // delegate must implement - (NSInteger)lineChartView:(JBLineChartView *)lineChartView heightForIndex:(NSInteger)index");
-    NSInteger maxHeight = 0;
-    for (NSInteger index=0; index<[self dataCount]; index++)
+    if (self.cachedMaxHeight == kJBLineChartViewUndefinedMaxHeight)
     {
-        if (([self.delegate lineChartView:self heightForIndex:index]) > maxHeight)
+        NSAssert([self.delegate respondsToSelector:@selector(lineChartView:heightForIndex:)], @"JBLineChartView // delegate must implement - (NSInteger)lineChartView:(JBLineChartView *)lineChartView heightForIndex:(NSInteger)index");
+        CGFloat maxHeight = 0;
+        for (NSInteger index=0; index<[self dataCount]; index++)
         {
-            maxHeight = [self.delegate lineChartView:self heightForIndex:index];
+            if (([self.delegate lineChartView:self heightForIndex:index]) > maxHeight)
+            {
+                maxHeight = [self.delegate lineChartView:self heightForIndex:index];
+            }
         }
+        self.cachedMaxHeight = maxHeight;
     }
-    return maxHeight;
+    return self.cachedMaxHeight;
 }
 
 - (CGFloat)minHeight

JBChartViewDemo/JBChartViewDemo/Controllers/JBLineChartViewController.m

@@ -14,13 +14,14 @@
 #import "JBLineChartFooterView.h"
 #import "JBChartInformationView.h"
 
+#define ARC4RANDOM_MAX 0x100000000
+
 // Numerics
 CGFloat const kJBLineChartViewControllerChartHeight = 250.0f;
 CGFloat const kJBLineChartViewControllerChartHeaderHeight = 75.0f;
 CGFloat const kJBLineChartViewControllerChartHeaderPadding = 20.0f;
 CGFloat const kJBLineChartViewControllerChartFooterHeight = 20.0f;
 NSInteger const kJBLineChartViewControllerNumChartPoints = 27;
-NSInteger const kJBLineChartViewControllerMaxPointValue = 100; // max random value
 
 // Strings
 NSString * const kJBLineChartViewControllerNavButtonViewKey = @"view";
@@ -60,7 +61,7 @@ NSString * const kJBLineChartViewControllerNavButtonViewKey = @"view";
     NSMutableArray *mutableChartData = [NSMutableArray array];
     for (int i=0; i<kJBLineChartViewControllerNumChartPoints; i++)
     {
-        [mutableChartData addObject:[NSNumber numberWithFloat:arc4random() % kJBLineChartViewControllerMaxPointValue]];
+        [mutableChartData addObject:[NSNumber numberWithFloat:((double)arc4random() / ARC4RANDOM_MAX)]]; // random number between 0 and 1
     }
     _chartData = [NSArray arrayWithArray:mutableChartData];
 }
@@ -135,7 +136,7 @@ NSString * const kJBLineChartViewControllerNavButtonViewKey = @"view";
 - (void)lineChartView:(JBLineChartView *)lineChartView didSelectChartAtIndex:(NSInteger)index
 {
     NSNumber *valueNumber = [self.chartData objectAtIndex:index];
-    [self.informationView setValueText:[NSString stringWithFormat:@"%d", [valueNumber intValue]] unitText:kJBStringLabelMm];
+    [self.informationView setValueText:[NSString stringWithFormat:@"%.2f", [valueNumber floatValue]] unitText:kJBStringLabelMm];
     [self.informationView setTitleText:[NSString stringWithFormat:@"%d", [kJBStringLabel1987 intValue] + (int)index]];
     [self.informationView setHidden:NO animated:YES];
 }

README.md

@@ -36,7 +36,7 @@ Simply add the following line to your <code>Podfile</code>:
 Your Podfile should look something like:
 
 	platform :ios, '7.0'
-	pod 'JBChartView', '~> 1.1.2'
+	pod 'JBChartView', '~> 1.1.3'
 	
 ### The Old School Way
 
@@ -52,7 +52,7 @@ Both JBChartView implementations have a similiar data source and delgate pattern
 
 #### JBBarChartView
 
-To initialze a <i>JBBarChartView</i>, you only need a few lines of code:
+To initialize a <i>JBBarChartView</i>, you only need a few lines of code:
 
 	JBBarChartView *barChartView = [[JBBarChartView alloc] init];
     barChartView.delegate = self;
@@ -75,7 +75,7 @@ Secondly, you need to inform the delegate the height of each bar (automatically
     
 #### JBLineChartView
 
-Similiarily, to initialze a JBLineChartView, you only need a few lines of code:
+Similiarily, to initialize a JBLineChartView, you only need a few lines of code:
 
 	JBLineChartView *lineChartView = [[JBLineChartView alloc] init];
     lineChartView.delegate = self;
@@ -176,4 +176,4 @@ A JBLineChartView visuaul overview can be found <a href="https://raw.github.com/
 	
 ## License
 
-Usage is provided under the <a href="http://www.apache.org/licenses/LICENSE-2.0" target="_blank">Apache License</a> (v2.0). See <a href="https://github.com/Jawbone/JBChartView/blob/master/LICENSE">LICENSE</a> for full details.
+Usage is provided under the <a href="http://www.apache.org/licenses/LICENSE-2.0" target="_blank">Apache License</a> (v2.0). See <a href="https://github.com/Jawbone/JBChartView/blob/master/LICENSE">LICENSE</a> for full details.