216 lines
5.6 KiB
HTML
216 lines
5.6 KiB
HTML
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<title>ORKValueRangeGraphChartViewDataSource Protocol Reference</title>
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<optgroup label="Instance Methods">
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<option value="//api/name/graphChartView:dataPointForPointIndex:plotIndex:">- graphChartView:dataPointForPointIndex:plotIndex:</option>
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<h1 class="title">ORKValueRangeGraphChartViewDataSource Protocol Reference</h1>
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<div class="section section-specification"><table cellspacing="0"><tbody>
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<tr>
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<th>Conforms to</th>
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<td><a href="../Protocols/ORKGraphChartViewDataSource.html">ORKGraphChartViewDataSource</a></td>
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</tr><tr>
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<th>Declared in</th>
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<td>ORKGraphChartView.h</td>
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</tr>
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</tbody></table></div>
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<div class="section section-overview">
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<a title="Overview" name="overview"></a>
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<h2 class="subtitle subtitle-overview">Overview</h2>
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<p>An object that adopts the <code>ORKValueRangeGraphChartViewDataSource</code> protocol is responsible for
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providing data in the form of <a href="../Classes/ORKValueRange.html"><code>ORKValueRange</code></a> values required to populate an
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<a href="../Classes/ORKValueRangeGraphChartView.html"><code>ORKValueRangeGraphChartView</code></a> concrete subclass, such as <a href="../Classes/ORKLineGraphChartView.html"><code>ORKLineGraphChartView</code></a> and
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<a href="../Classes/ORKDiscreteGraphChartView.html"><code>ORKDiscreteGraphChartView</code></a>.</p>
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<div class="task-list">
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<div class="section-method">
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<a name="//api/name/graphChartView:dataPointForPointIndex:plotIndex:" title="graphChartView:dataPointForPointIndex:plotIndex:"></a>
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<h3 class="method-title"><code><a href="#//api/name/graphChartView:dataPointForPointIndex:plotIndex:">– graphChartView:dataPointForPointIndex:plotIndex:</a></code>
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<span class="task-item-suffix">required method</span></h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>Asks the data source for the value range to be plotted at the specified point index for the
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specified plot.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (ORKValueRange *)graphChartView:(ORKGraphChartView *)<em>graphChartView</em> dataPointForPointIndex:(NSInteger)<em>pointIndex</em> plotIndex:(NSInteger)<em>plotIndex</em></code></div>
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<div class="method-subsection arguments-section parameters">
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<h4 class="method-subtitle parameter-title">Parameters</h4>
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<table class="argument-def parameter-def">
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<tr>
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<th scope="row" class="argument-name"><code>graphChartView</code></th>
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<td><p>The graph chart view that is asking for the value range.</p></td>
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</tr>
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<tr>
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<th scope="row" class="argument-name"><code>pointIndex</code></th>
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<td><p>An index number identifying the value range in the graph chart view.</p></td>
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</tr>
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<tr>
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<th scope="row" class="argument-name"><code>plotIndex</code></th>
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<td><p>An index number identifying the plot in the graph chart view. This index
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is 0 in a single-plot graph chart view.</p></td>
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</tr>
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</table>
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</div>
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<div class="method-subsection return">
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<h4 class="method-subtitle parameter-title">Return Value</h4>
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<p>The value range specified by <code>pointIndex</code> in the plot specified by <code>plotIndex</code> for the
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specified graph chart view`.</p>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ORKGraphChartView.h</code></p>
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</div>
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<p class="copyright">Copyright © 2018 ResearchKit. All rights reserved. Updated: 2018-07-23</p>
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