<!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="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="./css/main.css?_v_=1569843438509"><script>window.EC_WWW_LANG = 'en';
</script><script type="text/javascript" src="./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><link rel="stylesheet" type="text/css" href="css/ecOption.css?_v_=1569843438509"><link rel="stylesheet" type="text/css" href="vendors/prettify/prettify.css"><link rel="stylesheet" type="text/css" href="vendors/perfect-scrollbar/0.6.8/css/perfect-scrollbar.min.css"><link rel="stylesheet" type="text/css" href="vendors/jquery-autocomplete/jquery.auto-complete.css"><link rel="stylesheet" type="text/css" href="vendors/twentytwenty/twentytwenty.css"><script src="js/log.js"></script><script src="vendors/prettify/prettify.js"></script><script src="vendors/prettify/lang-css.js"></script><script src="vendors/esl.js"></script><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="./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 class="navbar navbar-default navbar-fixed-top"><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.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/">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.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 class="doc-version-change"><a href="https://echarts.baidu.com/echarts2/index-en.html">v2.x Doc</a></div><div class="ecdoc-apidoc"></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="./js/common.js"></script><script src="vendors/twentytwenty/jquery.event.move.js"></script><script src="vendors/twentytwenty/jquery.twentytwenty.js"></script><script type="text/javascript">window.globalArgsExtra = {
    pageName: 'option',
    initHash: 'title',
    docTreeRootText: '.setOption('
};</script><script src="vendors/jquery-autocomplete/jquery.auto-complete.min.js"></script><script type="text/javascript">document.getElementById('nav-doc').className = 'active';

var vendorPath = '../vendors';

define('globalArgs', extend({
    version: '1569843438509',
    basePath: './',
    // Schema url is added by each doc page
    schemaUrl: '',
    iconfont: {
        down: '&#' + parseInt('e600', 16),
        up: '&#' + parseInt('e603', 16),
        right: '&#' + parseInt('e602', 16),
        left: '&#' + parseInt('e604', 16),
        handLens: '&#' + parseInt('e601', 16)
    }
}, window.globalArgsExtra || {}));

define('prettyPrint', function () {
    return prettyPrint;
});

require.config({
    baseUrl: './js',
    paths: {
        dt: vendorPath + '/dt/0.0.1',
        tpl: vendorPath + '/dt/0.0.1/tplLoader',
        etpl: vendorPath + '/etpl/3.0.0/etpl.min',
        signals: vendorPath + '/signals/1.0.0/signals.min',
        hasher: vendorPath + '/hasher/1.2.0/hasher.min',
        perfectScrollbar: vendorPath + '/perfect-scrollbar/0.6.8/js/perfect-scrollbar'
    },
    urlArgs: '_v_=1569843438509'
});

require(['docTool/main'], function (main) {
    main.init();
});

function extend(tar, src) {
    for (var name in src) {
        if (src.hasOwnProperty(name)) {
            tar[name] = src[name];
        }
    }
    return tar;
}</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>