Summary/简介：
ECharts is a free, powerful charting and visualization library offering an easy way of adding intuitive, interactive, and highly customizable charts to your commercial products. It is written in pure JavaScript and based on zrender, which is a whole new lightweight canvas library.
ECharts，一个纯 Javascript 的图表库，可以流畅的运行在 PC 和移动设备上，兼容当前绝大部分浏览器（IE8/9/10/11，Chrome，Firefox，Safari等），底层依赖轻量级的 Canvas 类库 ZRender，提供直观，生动，可交互，可高度个性化定制的数据可视化图表。
您将从本教程学到什么?
- 如何将图表显示模式设置为词云图；
- 如何设置词云边距与对齐；
- 如何设置字体大小的范围值；
- 如何设置标签云形状；
要求条件
- 一个代码编辑器，如Atom、DreamWeaver。
- 下载echarts.js
- 下载echarts-wordcloud.js
难度
简单
教程内容
准备材料
0.1：在任意位置新建文件夹
0.2：在文件夹中放入echarts.js和echarts-wordcloud.js文件
0.3：在文件夹中新建文本文档并将.txt格式改为.html格式。
0.4：用代码编辑器打开文件并编写基础代码如下：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>steemit标签云</title>
<script src="echarts.js"></script>
<script src="echarts-wordcloud.js"></script>
<body>
<div id="main" style="width: 900px;height:900px;"></div>
<script type="text/javascript">
// 基于准备好的dom，初始化echarts实例
var myChart = echarts.init(document.getElementById('main'));
// 指定图表的配置项和数据
option = {
backgroundColor: '#2c343c',
tooltip : {
trigger: 'item',
formatter: "{a} <br/>{b} : {c}"
},
title: {
text: 'steemit标签云',
subtext: 'By @lixing',
right: 'center',
top: 10,
textStyle: {
color: '#ccc'
},
},
};
// 使用刚指定的配置项和数据显示图表。
myChart.setOption(option);
</script>
</body>
</html>
关键结果1：将图表显示模式设置为词云图
在option = {};中加入参数series : [ { } ]
在{ }内设置参数type: 'wordCloud',
加入data:[]数据
即可得到词云图。代码如下：
series : [
{
name: '标签被使用次数',
type: 'wordCloud',
data:[
{value:115835, name:'life'},
{value:78562, name:'photography'},
{value:62453, name:'steemit'},
{value:45831, name:'blog'},
{value:38690, name:'art'},
{value:32495, name:'bitcoin'},
{value:29032, name:'nature'},
{value:27722, name:'cryptocurrency'},
{value:27675, name:'story'},
{value:25752, name:'travel'},
{value:24354, name:'busy'},
{value:23617, name:'news'},
{value:22315, name:'steem'},
{value:21568, name:'funny'},
{value:20074, name:'writing'},
{value:19844, name:'introduceyourself'},
{value:18490, name:'indonesia'},
{value:17766, name:'food'},
{value:16985, name:'photo'},
{value:16761, name:'spanish'},
{value:16632, name:'crypto'},
{value:16433, name:'aceh'},
{value:16345, name:'money'},
{value:14900, name:'love'},
{value:14315, name:'dtube'},
{value:13415, name:'kr'},
{value:12226, name:'new'},
{value:11889, name:'meme'},
{value:11603, name:'video'},
{value:11310, name:'music'},
{value:10737, name:'blockchain'},
{value:9595, name:'cervantes'},
{value:9575, name:'health'},
{value:8545, name:'fun'},
{value:8464, name:'entertainment'},
{value:7916, name:'poetry'},
{value:7629, name:'steepshot'},
{value:7616, name:'cn'},
{value:7558, name:'nigeria'},
{value:7499, name:'technology'},
{value:7459, name:'dmania'},
{value:7434, name:'science'},
{value:7191, name:'philippines'},
{value:6367, name:'contest'},
{value:6231, name:'politics'},
{value:6112, name:'colorchallenge'},
{value:5960, name:'kr-newbie'},
{value:5716, name:'drawing'},
{value:5567, name:'history'},
{value:4845, name:'motivation'},
{value:4722, name:'utopian-io'},
{value:4627, name:'animals'},
{value:4606, name:'venezuela'},
{value:4542, name:'esteem'},
{value:4462, name:'gaming'},
{value:4392, name:'ethereum'},
{value:4267, name:'education'},
{value:4147, name:'beauty'},
{value:4146, name:'tr'},
{value:4051, name:'animal'},
{value:3909, name:'stach'},
{value:3884, name:'deutsch'},
{value:3859, name:'philosophy'},
{value:3837, name:'sport'},
{value:3824, name:'whalepower'},
{value:3699, name:'creativity'},
{value:3672, name:'community'},
{value:3647, name:'dlive'},
{value:3614, name:'sports'},
{value:3500, name:'promo-steem'},
{value:3482, name:'trading'},
{value:3414, name:'world'},
{value:3368, name:'untalented'},
{value:3346, name:'introducemyself'},
{value:3345, name:'ico'},
{value:3307, name:'youtube'},
{value:3198, name:'sevendaybnwchallenge'},
{value:3176, name:'family'},
{value:3163, name:'natural'},
{value:3097, name:'flower'},
{value:3091, name:'ksi'},
{value:2985, name:'india'},
{value:2964, name:'photofeed'},
{value:2959, name:'btc'},
{value:2925, name:'poem'},
{value:2911, name:'adventure'},
{value:2892, name:'steemph'},
{value:2843, name:'smartphonephotography'},
{value:2843, name:'vincentb'},
{value:2783, name:'inspiration'},
{value:2776, name:'painting'},
{value:2760, name:'castellano'},
{value:2731, name:'fiction'},
{value:2643, name:'business'},
{value:2634, name:'religion'},
{value:2548, name:'freedom'},
{value:2492, name:'humor'},
{value:2490, name:'culture'},
{value:2481, name:'sex'},
{value:2461, name:'jjangjjangman'},
{value:2402, name:'beautiful'},
{value:2397, name:'games'},
{value:2394, name:'creative'},
{value:2392, name:'lifestyle'},
{value:2381, name:'game'},
{value:2354, name:'market'},
{value:2296, name:'africa'},
{value:2290, name:'nsc'},
{value:2268, name:'flowers'},
{value:2249, name:'ocd-resteem'},
{value:2231, name:'recipe'},
{value:2182, name:'design'},
{value:2167, name:'trending'},
{value:2151, name:'post'},
{value:2122, name:'psychology'},
{value:2112, name:'nsfw'},
{value:2033, name:'steemiteducation'},
{value:2000, name:'picture'},
{value:1996, name:'ripple'},
{value:1980, name:'porn'},
{value:1968, name:'christianity'},
{value:1878, name:'movie'},
{value:1865, name:'film'},
{value:1851, name:'steemstem'},
{value:1849, name:'review'},
{value:1814, name:'hot'},
{value:1802, name:'football'},
{value:1798, name:'introduction'},
{value:1781, name:'photos'},
{value:1775, name:'tutorial'},
{value:1770, name:'altcoin'},
{value:1746, name:'animalphotography'},
{value:1731, name:'cryptocurrencies'},
{value:1731, name:'ru'},
{value:1722, name:'landscapephotography'},
{value:1705, name:'challenge'},
{value:1660, name:'anarchy'},
{value:1650, name:'people'},
{value:1642, name:'teammalaysia'},
{value:1641, name:'quote'},
{value:1630, name:'investing'},
{value:1622, name:'test'},
{value:1618, name:'free'},
{value:1610, name:'trump'},
{value:1609, name:'cat'},
{value:1601, name:'foodphotography'},
{value:1598, name:'english'},
{value:1590, name:'amazing'},
{value:1551, name:'dlive-broadcast'},
{value:1551, name:'mining'},
{value:1542, name:'live'},
{value:1541, name:'upvote'},
{value:1523, name:'crypto-news'},
{value:1513, name:'investment'},
{value:1498, name:'ourselves'},
{value:1485, name:'fitness'},
{value:1477, name:'happy'},
{value:1464, name:'help'},
{value:1443, name:'steemitphotochallenge'},
{value:1439, name:'sunset'},
{value:1434, name:'spirituality'},
{value:1386, name:'minnowsupport'},
{value:1381, name:'howto'},
{value:1369, name:'finance'},
{value:1362, name:'christian-trail'},
{value:1350, name:'work'},
{value:1344, name:'coin'},
{value:1343, name:'usa'},
{value:1337, name:'dog'},
{value:1329, name:'success'},
{value:1326, name:'sexy'},
{value:1323, name:'cooking'},
{value:1319, name:'comedy'},
{value:1305, name:'movies'},
{value:1280, name:'fashion'},
{value:1280, name:'minnowsunite'},
{value:1279, name:'altcoins'},
{value:1261, name:'anime'},
{value:1260, name:'genesisproject'},
{value:1259, name:'fr'},
{value:1244, name:'myanmar'},
{value:1242, name:'coinkorea'},
{value:1241, name:'introduce'},
{value:1230, name:'homesteading'},
{value:1217, name:'sndbox'},
{value:1207, name:'quotes'},
{value:1176, name:'winter'},
{value:1171, name:'macrophotography'},
{value:1136, name:'celestialchallenge'},
{value:1132, name:'japan'},
{value:1125, name:'litecoin'},
{value:1117, name:'polish'},
{value:1104, name:'bescouted'},
{value:1090, name:'cars'},
{value:1079, name:'japanese'},
{value:1065, name:'kr-writing'},
{value:1058, name:'teamaustralia'},
{value:1022, name:'thealliance'},
{value:1012, name:'coffee'},
{value:1006, name:'vlog'},
{value:995, name:'streetphotography'},
{value:978, name:'kr-join'},
{value:971, name:'openmic'},
{value:965, name:'ita'},
{value:960, name:'cats'},
{value:947, name:'colourfulphotography'},
{value:918, name:'muksteem'},
{value:895, name:'conspiracy'},
{value:890, name:'adsactly'},
{value:879, name:'thai'},
{value:877, name:'goldenhourphotography'},
{value:873, name:'steemchurch'},
{value:850, name:'portraitphotography'},
{value:839, name:'cebu'},
{value:836, name:'eos'},
{value:832, name:'gardening'},
{value:803, name:'giveaway'},
{value:796, name:'bitconnect'},
{value:790, name:'architecturalphotography'},
{value:789, name:'marijuana'},
{value:788, name:'pt'},
{value:771, name:'curation'},
{value:754, name:'cannabis'},
{value:740, name:'dsound'},
{value:729, name:'memechallenge'},
{value:615, name:'price'},
{value:601, name:'bwphotocontest'},
{value:590, name:'kr-art'},
{value:554, name:'cityscapephotography'},
{value:543, name:'bitshares'},
{value:527, name:'steemsilvergold'},
{value:519, name:'kr-travel'},
{value:512, name:'dailyfoodphotography'},
{value:511, name:'vehiclephotography'},
{value:505, name:'cointurk'},
{value:496, name:'norway'},
{value:495, name:'joy'},
{value:471, name:'steemdev'},
{value:402, name:'freewrite'},
{value:396, name:'kr-event'},
{value:393, name:'monomad'},
{value:342, name:'resteem'},
{value:338, name:'steem-cartoon'},
{value:216, name:'walkwithme'},
{value:165, name:'persian'},
{value:160, name:'witness-category'},
{value:143, name:'smartcash'},
{value:28, name:'charlesfuchs'},
{value:17, name:'steem-network'}
]
}
]
注：以上数据获取自2018.1.18https://steemit.com/tags
用浏览器打开html文件，此时效果如下图：
关键结果2：设置词云边距与对齐
在上面的效果图中，我们发现词云与背景图外边框有一定距离，而且本应该是圆形（js默认设置为圆形）的词云形状却是方形的，我们需要用一下代码实现改变词云边距与对齐效果：
left: 'center',
top: 'top',
width: '100%',
height: '100%',
right: null,
bottom: null,
将以上代码写入series : [ { } ]中即可。
其中left、right、top、bottom分别设置各边距，可以填写数值或字符命令。width、height设置宽高占比。
效果图如下：
关键结果3：设置字体大小的范围值
由于字体太大，所以显得圆形轮廓太粗糙。我们可以将字体缩小使词云轮廓更圆润，将如下代码写入series : [ { } ]中：
sizeRange: [5, 40],
其中5代表字体最小值，40代表字体最大值。
效果如下图：
关键结果4：设置标签云形状
除了圆形，词云形状还有cardioid , diamond , triangle, pentagon, star，写入以下代码，将circle替换为你想要效果的文本即可。
shape: 'cardioid',
以star为例，效果如下图：
完整代码如下：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>steemit标签云</title>
(html comment removed: 引入 echarts.js )
<script src="echarts.js"></script>
<script src="echarts-wordcloud.js"></script>
<body>
(html comment removed: 为ECharts准备一个具备大小（宽高）的Dom )
<div id="main" style="width: 900px;height:900px;"></div>
<script type="text/javascript">
// 基于准备好的dom，初始化echarts实例
var myChart = echarts.init(document.getElementById('main'));
// 指定图表的配置项和数据
option = {
backgroundColor: '#2c343c',
tooltip : {
trigger: 'item',
formatter: "{a} <br/>{b} : {c}"
},
title: {
text: 'steemit标签云',
subtext: 'By @lixing',
right: 'center',
top: 10,
textStyle: {
color: '#ccc'
},
},
series : [
{
name: '标签被使用次数',
type: 'wordCloud',
// The shape of the "cloud" to draw. Can be any polar equation represented as a
// callback function, or a keyword present. Available presents are circle (default),
// cardioid (apple or heart shape curve, the most known polar equation), diamond (
// alias of square), triangle-forward, triangle, (alias of triangle-upright, pentagon, and star.
shape: 'star',
// Text size range which the value in data will be mapped to.
// Default to have minimum 12px and maximum 60px size.
sizeRange: [10, 60],
// Folllowing left/top/width/height/right/bottom are used for positioning the word cloud
// Default to be put in the center and has 75% x 80% size.
left: 'center',
top: 'top',
width: '100%',
height: '100%',
right: null,
bottom: null,
data:[
{value:115835, name:'life'},
{value:78562, name:'photography'},
{value:62453, name:'steemit'},
{value:45831, name:'blog'},
{value:38690, name:'art'},
{value:32495, name:'bitcoin'},
{value:29032, name:'nature'},
{value:27722, name:'cryptocurrency'},
{value:27675, name:'story'},
{value:25752, name:'travel'},
{value:24354, name:'busy'},
{value:23617, name:'news'},
{value:22315, name:'steem'},
{value:21568, name:'funny'},
{value:20074, name:'writing'},
{value:19844, name:'introduceyourself'},
{value:18490, name:'indonesia'},
{value:17766, name:'food'},
{value:16985, name:'photo'},
{value:16761, name:'spanish'},
{value:16632, name:'crypto'},
{value:16433, name:'aceh'},
{value:16345, name:'money'},
{value:14900, name:'love'},
{value:14315, name:'dtube'},
{value:13415, name:'kr'},
{value:12226, name:'new'},
{value:11889, name:'meme'},
{value:11603, name:'video'},
{value:11310, name:'music'},
{value:10737, name:'blockchain'},
{value:9595, name:'cervantes'},
{value:9575, name:'health'},
{value:8545, name:'fun'},
{value:8464, name:'entertainment'},
{value:7916, name:'poetry'},
{value:7629, name:'steepshot'},
{value:7616, name:'cn'},
{value:7558, name:'nigeria'},
{value:7499, name:'technology'},
{value:7459, name:'dmania'},
{value:7434, name:'science'},
{value:7191, name:'philippines'},
{value:6367, name:'contest'},
{value:6231, name:'politics'},
{value:6112, name:'colorchallenge'},
{value:5960, name:'kr-newbie'},
{value:5716, name:'drawing'},
{value:5567, name:'history'},
{value:4845, name:'motivation'},
{value:4722, name:'utopian-io'},
{value:4627, name:'animals'},
{value:4606, name:'venezuela'},
{value:4542, name:'esteem'},
{value:4462, name:'gaming'},
{value:4392, name:'ethereum'},
{value:4267, name:'education'},
{value:4147, name:'beauty'},
{value:4146, name:'tr'},
{value:4051, name:'animal'},
{value:3909, name:'stach'},
{value:3884, name:'deutsch'},
{value:3859, name:'philosophy'},
{value:3837, name:'sport'},
{value:3824, name:'whalepower'},
{value:3699, name:'creativity'},
{value:3672, name:'community'},
{value:3647, name:'dlive'},
{value:3614, name:'sports'},
{value:3500, name:'promo-steem'},
{value:3482, name:'trading'},
{value:3414, name:'world'},
{value:3368, name:'untalented'},
{value:3346, name:'introducemyself'},
{value:3345, name:'ico'},
{value:3307, name:'youtube'},
{value:3198, name:'sevendaybnwchallenge'},
{value:3176, name:'family'},
{value:3163, name:'natural'},
{value:3097, name:'flower'},
{value:3091, name:'ksi'},
{value:2985, name:'india'},
{value:2964, name:'photofeed'},
{value:2959, name:'btc'},
{value:2925, name:'poem'},
{value:2911, name:'adventure'},
{value:2892, name:'steemph'},
{value:2843, name:'smartphonephotography'},
{value:2843, name:'vincentb'},
{value:2783, name:'inspiration'},
{value:2776, name:'painting'},
{value:2760, name:'castellano'},
{value:2731, name:'fiction'},
{value:2643, name:'business'},
{value:2634, name:'religion'},
{value:2548, name:'freedom'},
{value:2492, name:'humor'},
{value:2490, name:'culture'},
{value:2481, name:'sex'},
{value:2461, name:'jjangjjangman'},
{value:2402, name:'beautiful'},
{value:2397, name:'games'},
{value:2394, name:'creative'},
{value:2392, name:'lifestyle'},
{value:2381, name:'game'},
{value:2354, name:'market'},
{value:2296, name:'africa'},
{value:2290, name:'nsc'},
{value:2268, name:'flowers'},
{value:2249, name:'ocd-resteem'},
{value:2231, name:'recipe'},
{value:2182, name:'design'},
{value:2167, name:'trending'},
{value:2151, name:'post'},
{value:2122, name:'psychology'},
{value:2112, name:'nsfw'},
{value:2033, name:'steemiteducation'},
{value:2000, name:'picture'},
{value:1996, name:'ripple'},
{value:1980, name:'porn'},
{value:1968, name:'christianity'},
{value:1878, name:'movie'},
{value:1865, name:'film'},
{value:1851, name:'steemstem'},
{value:1849, name:'review'},
{value:1814, name:'hot'},
{value:1802, name:'football'},
{value:1798, name:'introduction'},
{value:1781, name:'photos'},
{value:1775, name:'tutorial'},
{value:1770, name:'altcoin'},
{value:1746, name:'animalphotography'},
{value:1731, name:'cryptocurrencies'},
{value:1731, name:'ru'},
{value:1722, name:'landscapephotography'},
{value:1705, name:'challenge'},
{value:1660, name:'anarchy'},
{value:1650, name:'people'},
{value:1642, name:'teammalaysia'},
{value:1641, name:'quote'},
{value:1630, name:'investing'},
{value:1622, name:'test'},
{value:1618, name:'free'},
{value:1610, name:'trump'},
{value:1609, name:'cat'},
{value:1601, name:'foodphotography'},
{value:1598, name:'english'},
{value:1590, name:'amazing'},
{value:1551, name:'dlive-broadcast'},
{value:1551, name:'mining'},
{value:1542, name:'live'},
{value:1541, name:'upvote'},
{value:1523, name:'crypto-news'},
{value:1513, name:'investment'},
{value:1498, name:'ourselves'},
{value:1485, name:'fitness'},
{value:1477, name:'happy'},
{value:1464, name:'help'},
{value:1443, name:'steemitphotochallenge'},
{value:1439, name:'sunset'},
{value:1434, name:'spirituality'},
{value:1386, name:'minnowsupport'},
{value:1381, name:'howto'},
{value:1369, name:'finance'},
{value:1362, name:'christian-trail'},
{value:1350, name:'work'},
{value:1344, name:'coin'},
{value:1343, name:'usa'},
{value:1337, name:'dog'},
{value:1329, name:'success'},
{value:1326, name:'sexy'},
{value:1323, name:'cooking'},
{value:1319, name:'comedy'},
{value:1305, name:'movies'},
{value:1280, name:'fashion'},
{value:1280, name:'minnowsunite'},
{value:1279, name:'altcoins'},
{value:1261, name:'anime'},
{value:1260, name:'genesisproject'},
{value:1259, name:'fr'},
{value:1244, name:'myanmar'},
{value:1242, name:'coinkorea'},
{value:1241, name:'introduce'},
{value:1230, name:'homesteading'},
{value:1217, name:'sndbox'},
{value:1207, name:'quotes'},
{value:1176, name:'winter'},
{value:1171, name:'macrophotography'},
{value:1136, name:'celestialchallenge'},
{value:1132, name:'japan'},
{value:1125, name:'litecoin'},
{value:1117, name:'polish'},
{value:1104, name:'bescouted'},
{value:1090, name:'cars'},
{value:1079, name:'japanese'},
{value:1065, name:'kr-writing'},
{value:1058, name:'teamaustralia'},
{value:1022, name:'thealliance'},
{value:1012, name:'coffee'},
{value:1006, name:'vlog'},
{value:995, name:'streetphotography'},
{value:978, name:'kr-join'},
{value:971, name:'openmic'},
{value:965, name:'ita'},
{value:960, name:'cats'},
{value:947, name:'colourfulphotography'},
{value:918, name:'muksteem'},
{value:895, name:'conspiracy'},
{value:890, name:'adsactly'},
{value:879, name:'thai'},
{value:877, name:'goldenhourphotography'},
{value:873, name:'steemchurch'},
{value:850, name:'portraitphotography'},
{value:839, name:'cebu'},
{value:836, name:'eos'},
{value:832, name:'gardening'},
{value:803, name:'giveaway'},
{value:796, name:'bitconnect'},
{value:790, name:'architecturalphotography'},
{value:789, name:'marijuana'},
{value:788, name:'pt'},
{value:771, name:'curation'},
{value:754, name:'cannabis'},
{value:740, name:'dsound'},
{value:729, name:'memechallenge'},
{value:615, name:'price'},
{value:601, name:'bwphotocontest'},
{value:590, name:'kr-art'},
{value:554, name:'cityscapephotography'},
{value:543, name:'bitshares'},
{value:527, name:'steemsilvergold'},
{value:519, name:'kr-travel'},
{value:512, name:'dailyfoodphotography'},
{value:511, name:'vehiclephotography'},
{value:505, name:'cointurk'},
{value:496, name:'norway'},
{value:495, name:'joy'},
{value:471, name:'steemdev'},
{value:402, name:'freewrite'},
{value:396, name:'kr-event'},
{value:393, name:'monomad'},
{value:342, name:'resteem'},
{value:338, name:'steem-cartoon'},
{value:216, name:'walkwithme'},
{value:165, name:'persian'},
{value:160, name:'witness-category'},
{value:143, name:'smartcash'},
{value:28, name:'charlesfuchs'},
{value:17, name:'steem-network'}
]
}
]
};
// 使用刚指定的配置项和数据显示图表。
myChart.setOption(option);
</script>
</body>
</html>
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Posted on Utopian.io - Rewarding Open Source Contributors
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[utopian-moderator]
没点代码基础的，感觉看天书样 。我是不是没救了！
😄没关系，在steemit里发挥自己特长就好，不一定要写代码。
不过，学一些代码将来总会有好处的。
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