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<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Area Chart | Chart.js</title>
<meta name="generator" content="VuePress 1.9.9">
<link rel="icon" href="/docs/latest/favicon.ico">
<meta name="description" content="Open source HTML5 Charts for your website">
<link rel="preload" href="/docs/latest/assets/css/0.styles.6dc2f403.css" as="style"><link rel="preload" href="/docs/latest/assets/js/app.1775731d.js" as="script"><link rel="preload" href="/docs/latest/assets/js/2.2c2b1036.js" as="script"><link rel="preload" href="/docs/latest/assets/js/150.fe20362f.js" as="script"><link rel="prefetch" href="/docs/latest/assets/js/10.ba172174.js"><link rel="prefetch" href="/docs/latest/assets/js/100.559bdb31.js"><link rel="prefetch" href="/docs/latest/assets/js/101.734a357a.js"><link rel="prefetch" href="/docs/latest/assets/js/102.e53ce872.js"><link rel="prefetch" href="/docs/latest/assets/js/103.9940e4fa.js"><link rel="prefetch" href="/docs/latest/assets/js/104.469f66c7.js"><link rel="prefetch" href="/docs/latest/assets/js/105.5ae465af.js"><link rel="prefetch" href="/docs/latest/assets/js/106.716d6eac.js"><link rel="prefetch" href="/docs/latest/assets/js/107.0833c00c.js"><link rel="prefetch" href="/docs/latest/assets/js/108.d33f5d8a.js"><link 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<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav> <ul class="sidebar-links"><li><a href="/docs/latest/" aria-current="page" class="sidebar-link">Chart.js</a></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Getting Started</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>General</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Configuration</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading open"><span>Chart Types</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/docs/latest/charts/area.html" aria-current="page" class="active sidebar-link">Area Chart</a></li><li><a href="/docs/latest/charts/bar.html" class="sidebar-link">Bar Chart</a></li><li><a href="/docs/latest/charts/bubble.html" class="sidebar-link">Bubble Chart</a></li><li><a href="/docs/latest/charts/doughnut.html" class="sidebar-link">Doughnut and Pie Charts</a></li><li><a href="/docs/latest/charts/line.html" class="sidebar-link">Line Chart</a></li><li><a href="/docs/latest/charts/mixed.html" class="sidebar-link">Mixed Chart Types</a></li><li><a href="/docs/latest/charts/polar.html" class="sidebar-link">Polar Area Chart</a></li><li><a href="/docs/latest/charts/radar.html" class="sidebar-link">Radar Chart</a></li><li><a href="/docs/latest/charts/scatter.html" class="sidebar-link">Scatter Chart</a></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Axes</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Developers</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Migration</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <main class="page"> <div class="theme-default-content content__default"><h1 id="area-chart"><a href="#area-chart" class="header-anchor">#</a> Area Chart</h1> <p>Both <a href="/docs/latest/charts/line.html">line</a> and <a href="/docs/latest/charts/radar.html">radar</a> charts support a <code>fill</code> option on the dataset object which can be used to create space between two datasets or a dataset and a boundary, i.e. the scale <code>origin</code>, <code>start,</code> or <code>end</code> (see <a href="#filling-modes">filling modes</a>).</p> <div class="custom-block tip"><p class="custom-block-title">Note</p> <p>This feature is implemented by the <a href="https://github.com/chartjs/Chart.js/blob/master/src/plugins/plugin.filler/index.js" target="_blank" rel="noopener noreferrer"><code>filler</code> plugin<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a>.</p></div> <h2 id="filling-modes"><a href="#filling-modes" class="header-anchor">#</a> Filling modes</h2> <table><thead><tr><th style="text-align:left;">Mode</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Values</th></tr></thead> <tbody><tr><td style="text-align:left;">Absolute dataset index</td> <td style="text-align:left;"><code>number</code></td> <td style="text-align:left;"><code>1</code>, <code>2</code>, <code>3</code>, ...</td></tr> <tr><td style="text-align:left;">Relative dataset index</td> <td style="text-align:left;"><code>string</code></td> <td style="text-align:left;"><code>'-1'</code>, <code>'-2'</code>, <code>'+1'</code>, ...</td></tr> <tr><td style="text-align:left;">Boundary</td> <td style="text-align:left;"><code>string</code></td> <td style="text-align:left;"><code>'start'</code>, <code>'end'</code>, <code>'origin'</code></td></tr> <tr><td style="text-align:left;">Disabled <sup>1</sup></td> <td style="text-align:left;"><code>boolean</code></td> <td style="text-align:left;"><code>false</code></td></tr> <tr><td style="text-align:left;">Stacked value below</td> <td style="text-align:left;"><code>string</code></td> <td style="text-align:left;"><code>'stack'</code></td></tr> <tr><td style="text-align:left;">Axis value</td> <td style="text-align:left;"><code>object</code></td> <td style="text-align:left;"><code>{ value: number; }</code></td></tr> <tr><td style="text-align:left;">Shape (fill inside line)</td> <td style="text-align:left;"><code>string</code></td> <td style="text-align:left;"><code>'shape'</code></td></tr></tbody></table> <blockquote><p><sup>1</sup> for backward compatibility, <code>fill: true</code> is equivalent to <code>fill: 'origin'</code><br></p></blockquote> <h3 id="example"><a href="#example" class="header-anchor">#</a> Example</h3> <div class="language-javascript extra-class"><pre class="language-javascript"><code><span class="token keyword">new</span> <span class="token class-name">Chart</span><span class="token punctuation">(</span>ctx<span class="token punctuation">,</span> <span class="token punctuation">{</span>
<span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
<span class="token literal-property property">datasets</span><span class="token operator">:</span> <span class="token punctuation">[</span>
<span class="token punctuation">{</span><span class="token literal-property property">fill</span><span class="token operator">:</span> <span class="token string">'origin'</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token comment">// 0: fill to 'origin'</span>
<span class="token punctuation">{</span><span class="token literal-property property">fill</span><span class="token operator">:</span> <span class="token string">'+2'</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token comment">// 1: fill to dataset 3</span>
<span class="token punctuation">{</span><span class="token literal-property property">fill</span><span class="token operator">:</span> <span class="token number">1</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token comment">// 2: fill to dataset 1</span>
<span class="token punctuation">{</span><span class="token literal-property property">fill</span><span class="token operator">:</span> <span class="token boolean">false</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token comment">// 3: no fill</span>
<span class="token punctuation">{</span><span class="token literal-property property">fill</span><span class="token operator">:</span> <span class="token string">'-2'</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token comment">// 4: fill to dataset 2</span>
<span class="token punctuation">{</span><span class="token literal-property property">fill</span><span class="token operator">:</span> <span class="token punctuation">{</span><span class="token literal-property property">value</span><span class="token operator">:</span> <span class="token number">25</span><span class="token punctuation">}</span><span class="token punctuation">}</span> <span class="token comment">// 5: fill to axis value 25</span>
<span class="token punctuation">]</span>
<span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre></div><p>If you need to support multiple colors when filling from one dataset to another, you may specify an object with the following option :</p> <table><thead><tr><th style="text-align:left;">Param</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>target</code></td> <td style="text-align:left;"><code>number</code>, <code>string</code>, <code>boolean</code>, <code>object</code></td> <td style="text-align:left;">The accepted values are the same as the filling mode values, so you may use absolute and relative dataset indexes and/or boundaries.</td></tr> <tr><td style="text-align:left;"><code>above</code></td> <td style="text-align:left;"><code>Color</code></td> <td style="text-align:left;">If no color is set, the default color will be the background color of the chart.</td></tr> <tr><td style="text-align:left;"><code>below</code></td> <td style="text-align:left;"><code>Color</code></td> <td style="text-align:left;">Same as the above.</td></tr></tbody></table> <h3 id="example-with-multiple-colors"><a href="#example-with-multiple-colors" class="header-anchor">#</a> Example with multiple colors</h3> <div class="language-javascript extra-class"><pre class="language-javascript"><code><span class="token keyword">new</span> <span class="token class-name">Chart</span><span class="token punctuation">(</span>ctx<span class="token punctuation">,</span> <span class="token punctuation">{</span>
<span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
<span class="token literal-property property">datasets</span><span class="token operator">:</span> <span class="token punctuation">[</span>
<span class="token punctuation">{</span>
<span class="token literal-property property">fill</span><span class="token operator">:</span> <span class="token punctuation">{</span>
<span class="token literal-property property">target</span><span class="token operator">:</span> <span class="token string">'origin'</span><span class="token punctuation">,</span>
<span class="token literal-property property">above</span><span class="token operator">:</span> <span class="token string">'rgb(255, 0, 0)'</span><span class="token punctuation">,</span> <span class="token comment">// Area will be red above the origin</span>
<span class="token literal-property property">below</span><span class="token operator">:</span> <span class="token string">'rgb(0, 0, 255)'</span> <span class="token comment">// And blue below the origin</span>
<span class="token punctuation">}</span>
<span class="token punctuation">}</span>
<span class="token punctuation">]</span>
<span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre></div><h2 id="configuration"><a href="#configuration" class="header-anchor">#</a> Configuration</h2> <p>Namespace: <code>options.plugins.filler</code></p> <table><thead><tr><th style="text-align:left;">Option</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Default</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>drawTime</code></td> <td style="text-align:left;"><code>string</code></td> <td style="text-align:left;"><code>beforeDatasetDraw</code></td> <td style="text-align:left;">Filler draw time. Supported values: <code>'beforeDraw'</code>, <code>'beforeDatasetDraw'</code>, <code>'beforeDatasetsDraw'</code></td></tr> <tr><td style="text-align:left;"><a href="#propagate"><code>propagate</code></a></td> <td style="text-align:left;"><code>boolean</code></td> <td style="text-align:left;"><code>true</code></td> <td style="text-align:left;">Fill propagation when target is hidden.</td></tr></tbody></table> <h3 id="propagate"><a href="#propagate" class="header-anchor">#</a> propagate</h3> <p><code>propagate</code> takes a <code>boolean</code> value (default: <code>true</code>).</p> <p>If <code>true</code>, the fill area will be recursively extended to the visible target defined by the <code>fill</code> value of hidden dataset targets:</p> <h4 id="example-using-propagate"><a href="#example-using-propagate" class="header-anchor">#</a> Example using propagate</h4> <div class="language-javascript extra-class"><pre class="language-javascript"><code><span class="token keyword">new</span> <span class="token class-name">Chart</span><span class="token punctuation">(</span>ctx<span class="token punctuation">,</span> <span class="token punctuation">{</span>
<span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
<span class="token literal-property property">datasets</span><span class="token operator">:</span> <span class="token punctuation">[</span>
<span class="token punctuation">{</span><span class="token literal-property property">fill</span><span class="token operator">:</span> <span class="token string">'origin'</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token comment">// 0: fill to 'origin'</span>
<span class="token punctuation">{</span><span class="token literal-property property">fill</span><span class="token operator">:</span> <span class="token string">'-1'</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token comment">// 1: fill to dataset 0</span>
<span class="token punctuation">{</span><span class="token literal-property property">fill</span><span class="token operator">:</span> <span class="token number">1</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token comment">// 2: fill to dataset 1</span>
<span class="token punctuation">{</span><span class="token literal-property property">fill</span><span class="token operator">:</span> <span class="token boolean">false</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token comment">// 3: no fill</span>
<span class="token punctuation">{</span><span class="token literal-property property">fill</span><span class="token operator">:</span> <span class="token string">'-2'</span><span class="token punctuation">}</span> <span class="token comment">// 4: fill to dataset 2</span>
<span class="token punctuation">]</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span>
<span class="token literal-property property">options</span><span class="token operator">:</span> <span class="token punctuation">{</span>
<span class="token literal-property property">plugins</span><span class="token operator">:</span> <span class="token punctuation">{</span>
<span class="token literal-property property">filler</span><span class="token operator">:</span> <span class="token punctuation">{</span>
<span class="token literal-property property">propagate</span><span class="token operator">:</span> <span class="token boolean">true</span>
<span class="token punctuation">}</span>
<span class="token punctuation">}</span>
<span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre></div><p><code>propagate: true</code>:
-if dataset 2 is hidden, dataset 4 will fill to dataset 1
-if dataset 2 and 1 are hidden, dataset 4 will fill to <code>'origin'</code></p> <p><code>propagate: false</code>:
-if dataset 2 and/or 4 are hidden, dataset 4 will not be filled</p></div> <footer class="page-edit"><!----> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">4/15/2025, 1:19:05 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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