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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>Scatter Chart | Chart.js</title>
<meta name="generator" content="VuePress 1.8.2">
<link rel="icon" href="/docs/3.0.0/favicon.ico">
<meta name="description" content="Open source HTML5 Charts for your website">
<link rel="preload" href="/docs/3.0.0/assets/css/0.styles.d1176108.css" as="style"><link rel="preload" href="/docs/3.0.0/assets/js/app.87478e1f.js" as="script"><link rel="preload" href="/docs/3.0.0/assets/js/2.dd802d82.js" as="script"><link rel="preload" href="/docs/3.0.0/assets/js/139.14e1e4c3.js" as="script"><link rel="preload" href="/docs/3.0.0/assets/js/3.f4a41186.js" as="script"><link rel="prefetch" href="/docs/3.0.0/assets/js/10.d01f0a05.js"><link rel="prefetch" href="/docs/3.0.0/assets/js/100.8bb5059e.js"><link rel="prefetch" href="/docs/3.0.0/assets/js/101.f681b5de.js"><link rel="prefetch" href="/docs/3.0.0/assets/js/102.7c60c881.js"><link rel="prefetch" href="/docs/3.0.0/assets/js/103.6d187d49.js"><link rel="prefetch" href="/docs/3.0.0/assets/js/104.583cd3e4.js"><link rel="prefetch" href="/docs/3.0.0/assets/js/105.e79e58ce.js"><link rel="prefetch" href="/docs/3.0.0/assets/js/106.c92ae374.js"><link rel="prefetch" href="/docs/3.0.0/assets/js/107.b2bf9c1b.js"><link rel="prefetch" 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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/3.0.0/" 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/3.0.0/charts/line.html" class="sidebar-link">Line Chart</a></li><li><a href="/docs/3.0.0/charts/bar.html" class="sidebar-link">Bar Chart</a></li><li><a href="/docs/3.0.0/charts/radar.html" class="sidebar-link">Radar Chart</a></li><li><a href="/docs/3.0.0/charts/doughnut.html" class="sidebar-link">Doughnut and Pie Charts</a></li><li><a href="/docs/3.0.0/charts/polar.html" class="sidebar-link">Polar Area Chart</a></li><li><a href="/docs/3.0.0/charts/bubble.html" class="sidebar-link">Bubble Chart</a></li><li><a href="/docs/3.0.0/charts/scatter.html" aria-current="page" class="active sidebar-link">Scatter Chart</a></li><li><a href="/docs/3.0.0/charts/area.html" class="sidebar-link">Area Chart</a></li><li><a href="/docs/3.0.0/charts/mixed.html" class="sidebar-link">Mixed Chart Types</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></ul> </aside> <main class="page"> <div class="theme-default-content content__default"><h1 id="scatter-chart"><a href="#scatter-chart" class="header-anchor">#</a> Scatter Chart</h1> <p>Scatter charts are based on basic line charts with the x axis changed to a linear axis. To use a scatter chart, data must be passed as objects containing X and Y properties. The example below creates a scatter chart with 4 points.</p> <div class="chart-editor" data-v-365c20ab><div class="chart-view" data-v-365c20ab><canvas></canvas></div> <div class="chart-actions" data-v-2afd21f1 data-v-365c20ab></div> <div class="code-editor" data-v-66ca8197 data-v-365c20ab><div class="code-editor-header" data-v-66ca8197><div class="code-editor-tabs" data-v-66ca8197><button class="code-editor-tab active" data-v-66ca8197>
config
</button><button class="code-editor-tab" data-v-66ca8197>
setup
</button></div> <div class="code-editor-tools" data-v-66ca8197><!----> <a href="https://github.com/chartjs/Chart.js/blob/master/docs/charts/scatter.md" title="View on GitHub" target="_blank" class="code-editor-tool fab fa-github fa-lg" data-v-66ca8197></a></div></div> <div class="code-editor-views" data-v-66ca8197><div class="editor-textarea ps" data-v-05f11386 data-v-66ca8197><div class="editor-textarea-content" data-v-05f11386><div class="prism-editor-wrapper" data-v-05f11386><div class="prism-editor__container"><textarea spellCheck="false" autocapitalize="off" autocomplete="off" autocorrect="off" data-gramm="false" placeholder="" data-testid="textarea" class="prism-editor__textarea">const config = {
type: 'scatter',
data: data,
options: {
scales: {
x: {
type: 'linear',
position: 'bottom'
}
}
}
};</textarea><pre data-testid="preview" class="prism-editor__editor"><span class="token keyword">const</span> config <span class="token operator">=</span> <span class="token punctuation">{</span>
type<span class="token operator">:</span> <span class="token string">'scatter'</span><span class="token punctuation">,</span>
data<span class="token operator">:</span> data<span class="token punctuation">,</span>
options<span class="token operator">:</span> <span class="token punctuation">{</span>
scales<span class="token operator">:</span> <span class="token punctuation">{</span>
x<span class="token operator">:</span> <span class="token punctuation">{</span>
type<span class="token operator">:</span> <span class="token string">'linear'</span><span class="token punctuation">,</span>
position<span class="token operator">:</span> <span class="token string">'bottom'</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><br /></pre></div></div></div></div><div class="editor-textarea ps" style="display:none;" data-v-05f11386 data-v-66ca8197><div class="editor-textarea-content" data-v-05f11386><div class="prism-editor-wrapper" data-v-05f11386><div class="prism-editor__container"><textarea spellCheck="false" autocapitalize="off" autocomplete="off" autocorrect="off" data-gramm="false" placeholder="" data-testid="textarea" class="prism-editor__textarea">const data = {
datasets: [{
label: 'Scatter Dataset',
data: [{
x: -10,
y: 0
}, {
x: 0,
y: 10
}, {
x: 10,
y: 5
}, {
x: 0.5,
y: 5.5
}],
backgroundColor: 'rgb(255, 99, 132)'
}],
};</textarea><pre data-testid="preview" class="prism-editor__editor"><span class="token keyword">const</span> data <span class="token operator">=</span> <span class="token punctuation">{</span>
datasets<span class="token operator">:</span> <span class="token punctuation">[</span><span class="token punctuation">{</span>
label<span class="token operator">:</span> <span class="token string">'Scatter Dataset'</span><span class="token punctuation">,</span>
data<span class="token operator">:</span> <span class="token punctuation">[</span><span class="token punctuation">{</span>
x<span class="token operator">:</span> <span class="token operator">-</span><span class="token number">10</span><span class="token punctuation">,</span>
y<span class="token operator">:</span> <span class="token number">0</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
x<span class="token operator">:</span> <span class="token number">0</span><span class="token punctuation">,</span>
y<span class="token operator">:</span> <span class="token number">10</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
x<span class="token operator">:</span> <span class="token number">10</span><span class="token punctuation">,</span>
y<span class="token operator">:</span> <span class="token number">5</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
x<span class="token operator">:</span> <span class="token number">0.5</span><span class="token punctuation">,</span>
y<span class="token operator">:</span> <span class="token number">5.5</span>
<span class="token punctuation">}</span><span class="token punctuation">]</span><span class="token punctuation">,</span>
backgroundColor<span class="token operator">:</span> <span class="token string">'rgb(255, 99, 132)'</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><br /></pre></div></div></div></div></div></div></div><h2 id="dataset-properties"><a href="#dataset-properties" class="header-anchor">#</a> Dataset Properties</h2> <p>The scatter chart supports all of the same properties as the <a href="/docs/3.0.0/charts/charts/line.html#dataset-properties">line chart</a>.
By default, the scatter chart will override the showLine property of the line chart to <code>false</code>.</p> <p>The index scale is of the type <code>linear</code>. This means if you are using the labels array the values have to be numbers or parsable to numbers, the same applies to the object format for the keys.</p> <h2 id="data-structure"><a href="#data-structure" class="header-anchor">#</a> Data Structure</h2> <p>Unlike the line chart where data can be supplied in two different formats, the scatter chart only accepts data in a point format.</p> <div class="language-javascript extra-class"><pre class="language-javascript"><code>data<span class="token operator">:</span> <span class="token punctuation">[</span><span class="token punctuation">{</span>
x<span class="token operator">:</span> <span class="token number">10</span><span class="token punctuation">,</span>
y<span class="token operator">:</span> <span class="token number">20</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
x<span class="token operator">:</span> <span class="token number">15</span><span class="token punctuation">,</span>
y<span class="token operator">:</span> <span class="token number">10</span>
<span class="token punctuation">}</span><span class="token punctuation">]</span>
</code></pre></div><h2 id="internal-data-format"><a href="#internal-data-format" class="header-anchor">#</a> Internal data format</h2> <p><code>{x, y}</code></p></div> <footer class="page-edit"><!----> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">4/2/2021, 7:48:50 AM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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