<!DOCTYPE html><html lang="en-US"><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1" user-scalable="no"><meta name="description" content="ECharts, a powerful, interactive charting and visualization library for browser"><link rel="shortcut icon" href="https://echarts.cdn.apache.org/en/images/favicon.png"><link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css"><!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries--><!--[if lt IE 9]><script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script><script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script><![endif]--><link rel="stylesheet" type="text/css" href="https://echarts.cdn.apache.org/en/css/main.css?_v_=1589539470770"><script>window.EC_WWW_LANG = 'en';
</script><script type="text/javascript" src="https://echarts.cdn.apache.org/en/vendors/pace/pace.min.js"></script><script id="font-hack" type="text/javascript">if (/windows/i.test(navigator.userAgent)) {
    var el = document.createElement('style');
    el.innerHTML = ''
        + '@font-face {font-family:"noto-thin";src:local("Microsoft Yahei");}'
        + '@font-face {font-family:"noto-light";src:local("Microsoft Yahei");}';
    document.head.insertBefore(el, document.getElementById('font-hack'));
}
</script><title>ECharts Documentation</title><style>html, body {
    /* position: sticky should not have overflow parents.*/
    overflow-x: hidden;
}</style><link rel="stylesheet" href="https://echarts.cdn.apache.org/en/css/doc-bundle.css?_v_=1589539470770"><script type="text/javascript" src="https://cdn.jsdelivr.net/npm/jquery@2.2.4/dist/jquery.min.js"></script></head><!--[if lte IE 8]><body class="lower-ie"><div id="lowie-main"><img src="https://echarts.cdn.apache.org/en/images/forie.png" alt="ie tip"></div></body><![endif]-->
<!--[if (gt IE 8)|!(IE)]><body class="undefined"></body><![endif]--><div id="apache-banner"><div class="txt"><p>Apache ECharts is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator.</p><p>We are working on redirecting this Website to <a href="https://echarts.apache.org" target="_blank">https://echarts.apache.org</a>. You may visit our new official Website now.</p></div><a href="https://echarts.apache.org" target="_blank" onclick="logApache()" class="btn"><div>Visit Official Website</div></a><a href="javascript:;" onclick="closeApacheBanner(true)" class="close-btn">x</a></div><div id="main"><nav id="ec-doc-nav" class="navbar navbar-default navbar-fixed-top doc-nav"><div class="container-fluid"><div class="navbar-header"><button type="button" data-toggle="collapse" data-target="#navbar-collapse" aria-expanded="false" class="navbar-toggle collapsed"><span class="sr-only">Toggle navigation</span><span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span></button><a href="https://echarts.apache.org/en/index.html" class="navbar-brand"><img src="https://echarts.cdn.apache.org/en/images/logo.png" alt="echarts logo" class="navbar-logo"></a></div><div id="navbar-collapse" class="collapse navbar-collapse"><ul class="nav navbar-nav navbar-left"><li id="nav-index"><a href="https://echarts.apache.org/en/index.html">Home</a></li><li id="nav-doc" class="dropdown"><a href="#" data-toggle="dropdown" class="dropdown-toggle">Documents<b class="caret"></b></a><ul class="dropdown-menu"><li><a href="https://echarts.apache.org/en/feature.html">Features</a></li><li><a href="https://echarts.apache.org/en/tutorial.html">Tutorials</a></li><li><a href="https://echarts.apache.org/en/api.html">API</a></li><li><a href="https://echarts.apache.org/en/cheat-sheet.html">Cheat Sheet<span class="new">NEW</span></a></li><li><a href="https://echarts.apache.org/en/option.html">Chart Configuration</a></li><li><a href="https://echarts.apache.org/en/option-gl.html">GL Configuration (Chinese)</a></li><li><a href="https://echarts.apache.org/en/changelog.html">Changelog</a></li></ul></li><li id="nav-download" class="dropdown"><a href="#" data-toggle="dropdown" class="dropdown-toggle">Download<b class="caret"></b></a><ul class="dropdown-menu"><li><a href="https://echarts.apache.org/en/download.html">Download</a></li><li><a href="https://echarts.apache.org/en/download-theme.html">Download Themes</a></li><li><a href="https://echarts.apache.org/en/download-extension.html">Download Extensions</a></li></ul></li><li id="nav-examples"><a href="#" data-toggle="dropdown" class="dropdown-toggle">Examples<b class="caret"></b></a><ul class="dropdown-menu"><li><a href="https://echarts.apache.org/examples/en/index.html">ECharts Examples</a></li><li><a href="https://echarts.apache.org/examples/en/index.html#chart-type-globe">GL Examples</a></li></ul></li><li id="nav-contribute"><a href="#" data-toggle="dropdown" class="dropdown-toggle">Contribute<b class="caret"></b></a><ul class="dropdown-menu"><li><a href="https://github.com/apache/incubator-echarts" target="_blank">Source Code (GitHub)</a></li><li><a href="https://github.com/apache/incubator-echarts/issues" target="_blank">Issue Tracking</a></li><li><a href="https://echarts.apache.org/en/coding-standard.html">Code Standard</a></li></ul></li><li id="nav-about"><a href="#" data-toggle="dropdown" class="dropdown-toggle">About<b class="caret"></b></a><ul class="dropdown-menu"><li><a href="https://echarts.apache.org/en/committers.html">Committers</a></li><li><a href="https://www.apache.org/licenses/">License</a></li><li><a href="https://echarts.apache.org/en/maillist.html">Mailing List</a></li><li><a href="https://echarts.apache.org/en/dependencies.html">Dependencies</a></li><li><a href="https://echarts.apache.org/en/faq.html">FAQ</a></li></ul></li></ul><ul class="nav navbar-nav navbar-right"><li id="nav-github"><a href="https://github.com/ecomfe/echarts" target="_blank"><img src="https://echarts.cdn.apache.org/en/images/github.png" width="18"></a></li><li id="nav-homeen"><a href="javascript:;" onclick="changeLang('zh')">中文</a></li></ul></div></div></nav><div id="ec-doc-main"></div></div><script type="text/javascript" src="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/js/bootstrap.min.js"></script><script type="text/javascript" src="https://echarts.cdn.apache.org/en/js/common.js"></script><script src="https://echarts.cdn.apache.org/en/js/doc-bundle.js?_v_=1589539470770"></script><script type="text/javascript">window.EC_WWW_CDN_ROOT = 'https://echarts.cdn.apache.org';
</script><script type="text/javascript">window.globalArgsExtra = {
    baseUrl: 'documents/tutorial-parts',
    docType: 'tutorial',
    locale: 'en'
};
if (window.EC_WWW_CDN_ROOT) {
    window.globalArgsExtra.cdnRoot = window.EC_WWW_CDN_ROOT + '/en/' + window.globalArgsExtra.baseUrl
}</script><script type="text/javascript">document.getElementById('nav-doc').className = 'active';
window.globalArgsExtra.version = '1589539470770';
echartsDoc.init('#ec-doc-main', window.globalArgsExtra);</script><!-- Baidu Tongji--><script type="text/javascript">var _hmt = _hmt || [];
(function() {
var hm = document.createElement("script");

hm.src = "https://hm.baidu.com/hm.js?54b918eee37cb8a7045f0fd0f0b24395";

var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();
</script><!-- Google Analytics--><script type="text/javascript" async src="https://www.googletagmanager.com/gtag/js?id=UA-141228404-1"></script><script type="text/javascript">window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'UA-141228404-1');</script></html>