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style="display:none"></ul></li></ul></li><li class="nav-item"><a class="nav-link"><span class="title">Data</span> <span class="glyphicon glyphicon-menu-down"></span></a> <ul class="nav bd-sidenav level2" style="display:none"><li class="nav-item"><a href="/handbook/en/how-to/data/dynamic-data" class="nav-link"><span class="title">Dynamic Data</span></a> <ul class="nav bd-sidenav level3" style="display:none"></ul></li><!----></ul></li><li class="nav-item"><a class="nav-link"><span class="title">Label</span> <span class="glyphicon glyphicon-menu-down"></span></a> <ul class="nav bd-sidenav level2" style="display:none"><li class="nav-item"><a href="/handbook/en/how-to/label/rich-text" class="nav-link"><span class="title">Rich Text</span></a> <ul class="nav bd-sidenav level3" style="display:none"></ul></li></ul></li><li class="nav-item"><a class="nav-link"><span class="title">Animation</span> <span class="glyphicon glyphicon-menu-down"></span></a> <ul class="nav bd-sidenav level2" style="display:none"><li class="nav-item"><a href="/handbook/en/how-to/animation/transition" class="nav-link"><span class="title">Data Transition</span></a> <ul class="nav bd-sidenav level3" style="display:none"></ul></li></ul></li><li class="nav-item"><a class="nav-link"><span class="title">Interaction</span> <span class="glyphicon glyphicon-menu-down"></span></a> <ul class="nav bd-sidenav level2" style="display:none"><li class="nav-item"><a href="/handbook/en/how-to/interaction/drag" class="nav-link"><span class="title">Drag</span></a> <ul class="nav bd-sidenav level3" style="display:none"></ul></li><!----></ul></li></ul></li><li class="nav-item"><div class="nav-link"><span class="title">Best Practices</span></div> <ul class="nav bd-sidenav level1"><!----><li class="nav-item"><a href="/handbook/en/best-practices/canvas-vs-svg" class="nav-link"><span class="title">Canvas vs. SVG</span></a> <ul class="nav bd-sidenav level2" style="display:none"></ul></li><li class="nav-item"><a href="/handbook/en/best-practices/aria" class="nav-link"><span class="title">Aria</span></a> <ul class="nav bd-sidenav level2" style="display:none"></ul></li></ul></li><li class="nav-item"><div class="nav-link"><span class="title">Edit Handbook</span></div> <ul class="nav bd-sidenav level1"><li class="nav-item"><a href="/handbook/en/meta/edit-guide" class="nav-link"><span class="title">Edit Guide</span></a> <ul class="nav bd-sidenav level2" style="display:none"></ul></li></ul></li></ul></div> <div class="open-sidebar"><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" class="h-6 w-6"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7"></path></svg></div></div> <div class="bd-content col-sm-7 pl-sm-2 col-12"><div class="post-content content"><div><div class="post-inner"><!----> <div class="nuxt-content"><article><h1 id="dynamic-sorting-bar-chart" tabindex="-1">Dynamic Sorting Bar Chart</h1> <h2 id="related-options" tabindex="-1">Related Options</h2> <p>Bar race is a chart that shows changes in the ranking of data over time and it is supported by default sinde ECharts 5.</p> <blockquote><p>Bar race charts usually use horizontal bars. If you want to use vertical bars, just take the X axis and Y axis in this tutorial to the opposite.</p></blockquote> <ol><li>Set <code>realtimeSort</code> of the bar series to be <code>true</code> to enable bar race</li> <li>Set <code>yAxis.inverse</code> to be <code>true</code> to display longer bars at top</li> <li><code>yAxis.animationDuration</code> is suggested to be set to be <code>300</code> for bar reordering animation for the first time</li> <li><code>yAxis.animationDurationUpdate</code> is suggested to be set to be <code>300</code> for bar reordering animation for later times</li> <li>Set <code>yAxis.max</code> to be <em>n - 1</em> where <em>n</em> is the number of bars to be displayed; otherwise, all bars are displayed</li> <li><code>xAxis.max</code> is suggested to be set to be <code>'dataMax'</code> so that the maximum of data is used as X maximum.</li> <li>If realtime label changing is required, set <code>series.label.valueAnimation</code> to be <code>true</code></li> <li>Set <code>animationDuration</code> to be <code>0</code> so that the first animation doesn't start from 0; if you wish otherwise, set it to be the same value as <code>animationDurationUpdate</code></li> <li><code>animationDurationUpdate</code> is suggested to be set to be <code>3000</code> for animation update duration, which should be the same as the frequency of calling <code>setOption</code></li> <li>Call <code>setOption</code> to update data to be of next time with <code>setInterval</code> at the frequency of <code>animationDurationUpdate</code></li></ol> <h2 id="demo" tabindex="-1">Demo</h2> <p>A complete demo:</p> <div class="md-live layout-tb"><div class="md-live-editor"><div class="md-live-editor-container"><div class="prism-editor-wrapper"><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">var data = [];
for (let i = 0; i &lt; 5; ++i) {
  data.push(Math.round(Math.random() * 200));
}

option = {
  xAxis: {
    max: 'dataMax'
  },
  yAxis: {
    type: 'category',
    data: ['A', 'B', 'C', 'D', 'E'],
    inverse: true,
    animationDuration: 300,
    animationDurationUpdate: 300,
    max: 2 // only the largest 3 bars will be displayed
  },
  series: [
    {
      realtimeSort: true,
      name: 'X',
      type: 'bar',
      data: data,
      label: {
        show: true,
        position: 'right',
        valueAnimation: true
      }
    }
  ],
  legend: {
    show: true
  },
  animationDuration: 0,
  animationDurationUpdate: 3000,
  animationEasing: 'linear',
  animationEasingUpdate: 'linear'
};

function run() {
  var data = option.series[0].data;
  for (var i = 0; i &lt; data.length; ++i) {
    if (Math.random() > 0.9) {
      data[i] += Math.round(Math.random() * 2000);
    } else {
      data[i] += Math.round(Math.random() * 200);
    }
  }
  myChart.setOption(option);
}

setTimeout(function() {
  run();
}, 0);
setInterval(function() {
  run();
}, 3000);</textarea><pre data-testid="preview" class="prism-editor__editor"><span class="token keyword">var</span> data <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
<span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">let</span> i <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span> i <span class="token operator">&lt;</span> <span class="token number">5</span><span class="token punctuation">;</span> <span class="token operator">++</span>i<span class="token punctuation">)</span> <span class="token punctuation">{</span>
  data<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">round</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">random</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token number">200</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

option <span class="token operator">=</span> <span class="token punctuation">{</span>
  xAxis<span class="token operator">:</span> <span class="token punctuation">{</span>
    max<span class="token operator">:</span> <span class="token string">'dataMax'</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  yAxis<span class="token operator">:</span> <span class="token punctuation">{</span>
    type<span class="token operator">:</span> <span class="token string">'category'</span><span class="token punctuation">,</span>
    data<span class="token operator">:</span> <span class="token punctuation">[</span><span class="token string">'A'</span><span class="token punctuation">,</span> <span class="token string">'B'</span><span class="token punctuation">,</span> <span class="token string">'C'</span><span class="token punctuation">,</span> <span class="token string">'D'</span><span class="token punctuation">,</span> <span class="token string">'E'</span><span class="token punctuation">]</span><span class="token punctuation">,</span>
    inverse<span class="token operator">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
    animationDuration<span class="token operator">:</span> <span class="token number">300</span><span class="token punctuation">,</span>
    animationDurationUpdate<span class="token operator">:</span> <span class="token number">300</span><span class="token punctuation">,</span>
    max<span class="token operator">:</span> <span class="token number">2</span> <span class="token comment">// only the largest 3 bars will be displayed</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  series<span class="token operator">:</span> <span class="token punctuation">[</span>
    <span class="token punctuation">{</span>
      realtimeSort<span class="token operator">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
      name<span class="token operator">:</span> <span class="token string">'X'</span><span class="token punctuation">,</span>
      type<span class="token operator">:</span> <span class="token string">'bar'</span><span class="token punctuation">,</span>
      data<span class="token operator">:</span> data<span class="token punctuation">,</span>
      label<span class="token operator">:</span> <span class="token punctuation">{</span>
        show<span class="token operator">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
        position<span class="token operator">:</span> <span class="token string">'right'</span><span class="token punctuation">,</span>
        valueAnimation<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>
  legend<span class="token operator">:</span> <span class="token punctuation">{</span>
    show<span class="token operator">:</span> <span class="token boolean">true</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  animationDuration<span class="token operator">:</span> <span class="token number">0</span><span class="token punctuation">,</span>
  animationDurationUpdate<span class="token operator">:</span> <span class="token number">3000</span><span class="token punctuation">,</span>
  animationEasing<span class="token operator">:</span> <span class="token string">'linear'</span><span class="token punctuation">,</span>
  animationEasingUpdate<span class="token operator">:</span> <span class="token string">'linear'</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span>

<span class="token keyword">function</span> <span class="token function">run</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
  <span class="token keyword">var</span> data <span class="token operator">=</span> option<span class="token punctuation">.</span>series<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token punctuation">.</span>data<span class="token punctuation">;</span>
  <span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">var</span> i <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span> i <span class="token operator">&lt;</span> data<span class="token punctuation">.</span>length<span class="token punctuation">;</span> <span class="token operator">++</span>i<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">if</span> <span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">random</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">></span> <span class="token number">0.9</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      data<span class="token punctuation">[</span>i<span class="token punctuation">]</span> <span class="token operator">+=</span> Math<span class="token punctuation">.</span><span class="token function">round</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">random</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token number">2000</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
      data<span class="token punctuation">[</span>i<span class="token punctuation">]</span> <span class="token operator">+=</span> Math<span class="token punctuation">.</span><span class="token function">round</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">random</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token number">200</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
  myChart<span class="token punctuation">.</span><span class="token function">setOption</span><span class="token punctuation">(</span>option<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token function">setTimeout</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
  <span class="token function">run</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 number">0</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">setInterval</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
  <span class="token function">run</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 number">3000</span><span class="token punctuation">)</span><span class="token punctuation">;</span><br></pre></div></div></div> <div class="md-live-tag">live</div> <div class="clipboard" data-v-479657ca><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" class="h-6 w-6" data-v-479657ca><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" class="h-6 w-6" data-v-479657ca><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 5H6a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2v-1M8 5a2 2 0 002 2h2a2 2 0 002-2M8 5a2 2 0 012-2h2a2 2 0 012 2m0 0h2a2 2 0 012 2v3m2 4H10m0 0l3-3m-3 3l3 3" data-v-479657ca></path></svg></svg></div></div> <div class="md-live-preview"></div></div></article></div></div> <div class="post-contributors"><h3><span class="inline-block align-middle">Contributors</span> <a target="_blank" href="https://github.com/apache/echarts-handbook/tree/master/contents/en/how-to/chart-types/bar/bar-race.md" title="Edit this Document" class="inline-block align-middle text-sm"><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" class="h-8 w-8 inline-block align-middle"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z"></path></svg> <span class="inline-block align-middle">Edit this page on GitHub</span></a></h3> <div class="post-contributors-list"><a href="https://github.com/Ovilia" target="_blank" class="post-contributor"><img alt="Ovilia" src="https://avatars.githubusercontent.com/Ovilia?size=60"> <span>Ovilia</span></a><a href="https://github.com/pissang" target="_blank" class="post-contributor"><img alt="pissang" src="https://avatars.githubusercontent.com/pissang?size=60"> <span>pissang</span></a></div></div></div></div></div></div> <link rel="stylesheet" href="//fastly.jsdelivr.net/npm/highlight.js@9.12.0/styles/github-gist.min.css"></div></div></div></div><script>window.__NUXT__=function(t,i,e,r,d,a,l,o,n,s,c,h,g,b,p,C,m,I,A,u,f,y,B,w,W,S,v,G,R,D,Y,x,K,k,X,H,Z,F,V,L,O,P,E,J,M,U,z,T,N,Q,q,_,j,$,tt,it,et,rt,dt){return{layout:"default",data:[{html:'<h1 id="dynamic-sorting-bar-chart" tabindex="-1">Dynamic Sorting Bar Chart</h1>\n<h2 id="related-options" tabindex="-1">Related Options</h2>\n<p>Bar race is a chart that shows changes in the ranking of data over time and it is supported by default sinde ECharts 5.</p>\n<blockquote>\n<p>Bar race charts usually use horizontal bars. If you want to use vertical bars, just take the X axis and Y axis in this tutorial to the opposite.</p>\n</blockquote>\n<ol>\n<li>Set <code>realtimeSort</code> of the bar series to be <code>true</code> to enable bar race</li>\n<li>Set <code>yAxis.inverse</code> to be <code>true</code> to display longer bars at top</li>\n<li><code>yAxis.animationDuration</code> is suggested to be set to be <code>300</code> for bar reordering animation for the first time</li>\n<li><code>yAxis.animationDurationUpdate</code> is suggested to be set to be <code>300</code> for bar reordering animation for later times</li>\n<li>Set <code>yAxis.max</code> to be <em>n - 1</em> where <em>n</em> is the number of bars to be displayed; otherwise, all bars are displayed</li>\n<li><code>xAxis.max</code> is suggested to be set to be <code>\'dataMax\'</code> so that the maximum of data is used as X maximum.</li>\n<li>If realtime label changing is required, set <code>series.label.valueAnimation</code> to be 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