[GitHub] MerlChen opened a new issue #8235: 【折线图堆叠BUG】

[GitBox]

MerlChen opened a new issue #8235: 【折线图堆叠BUG】
URL: https://github.com/apache/incubator-echarts/issues/8235
 
 
   <!--
   为了方便我们能够复现和修复 bug，请遵从下面的规范描述您的问题。
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   ### One-line summary [问题简述]
   ```
   1、某一折线图的某个点数值为0时,它的点不会掉到最下面，而是取下一条线的对应的点
   
   
   ```
   
![image](https://user-images.githubusercontent.com/23546308/39348235-d40f68f2-4a28-11e8-885b-1ffdd1cd2a8a.png)
   
   
   
   
   ### Version & Environment [版本及环境]
   + ECharts version [ECharts 版本]:
   + Browser version [浏览器类型和版本]:
   + OS Version [操作系统类型和版本]:
   
   
   
   
   
   ### Expected behaviour [期望结果]
   
   正常显示，为0时，掉到最底部
   
   
   
   ### ECharts option [ECharts配置项]
   <!-- Copy and paste your 'echarts option' here. -->
   <!-- [下方贴你的option，注意不要删掉下方 ```javascript 和 尾部的 ``` 字样。最好是我们能够直接运行的 
option。如何得到能运行的 option 参见上方的 guidelines for contributing] -->
   ```javascript
   option = {
       title: {
           text: '折线图堆叠'
       },
       tooltip: {
           trigger: 'axis'
       },
       legend: {
           data:['邮件营销','联盟广告','视频广告','直接访问','搜索引擎']
       },
       grid: {
           left: '3%',
           right: '4%',
           bottom: '3%',
           containLabel: true
       },
       toolbox: {
           feature: {
               saveAsImage: {}
           }
       },
       xAxis: {
           type: 'category',
           boundaryGap: false,
           data: ['周一','周二','周三','周四','周五','周六','周日']
       },
       yAxis: {
           type: 'value'
       },
       series: [
           {
               name:'邮件营销',
               type:'line',
               stack: '总量',
               data:[12, 132, 101, 134, 90, 230, 210]
           },
           {
               name:'联盟广告',
               type:'line',
               stack: '总量',
               data:[220, 182, 191, 234, 290, 330, 310]
           },
           {
               name:'视频广告',
               type:'line',
               stack: '总量',
               data:[1, 232, 201, 154, 190, 330, 410]
           },
           {
               name:'直接访问',
               type:'line',
               stack: '总量',
               data:[320, 332, 301, 334, 390, 330, 320]
           },
           {
               name:'搜索引擎',
               type:'line',
               stack: '总量',
               data:[0, 0, 0, 0, 1290, 1330, 1320]
           }
       ]
   };
   
   
   ```
   
   
   
   
   ### Other comments [其他信息]
   <!-- For example: Screenshot or Online demo -->
   <!-- [例如，截图或线上实例 (JSFiddle/JSBin/Codepen)] -->
   
![image](https://user-images.githubusercontent.com/23546308/39348235-d40f68f2-4a28-11e8-885b-1ffdd1cd2a8a.png)
   
   联系方式：QQ 379181273
   

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