[GitHub] kingecg opened a new issue #8344: timeseries动态更新数据时图像抖动

[GitBox <gi...@apache.org>]

kingecg opened a new issue #8344: timeseries动态更新数据时图像抖动
URL: https://github.com/apache/incubator-echarts/issues/8344
 
 
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   ### One-line summary [问题简述]
   当采用setInterval动态更新数据时，如果使用dataset或series.data是一个二维数组，图像会产生很明显的抖动。
   
   
   
   
   ### Version & Environment [版本及环境]
   + ECharts version [ECharts 版本]: 4.1.0
   + Browser version [浏览器类型和版本]: chrome  66.0.3359.139
   + OS Version [操作系统类型和版本]: Mac osx most recent version
   
   
   
   
   
   ### Expected behaviour [期望结果]
   如官方示例，timeseries曲线更新能够没有抖动
   http://echarts.baidu.com/examples/editor.html?c=dynamic-data2
   
   
   
   ### 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
   function randomData() {
       now = new Date(+now + oneDay);
       value = value + Math.random() * 21 - 10;
       return  [
               now,
               Math.round(value)
           ]
       
   }
   
   var data = [];
   var now = +new Date(1997, 9, 3);
   var oneDay =  1000;
   var value = Math.random() * 1000;
   for (var i = 0; i < 1000; i++) {
       data.push(randomData());
   }
   
   option = {
       title: {
           text: '动态数据 + 时间坐标轴'
       },
       tooltip: {
           trigger: 'axis',
           formatter: function (params) {
               params = params[0];
               var date = new Date(params.name);
               return date.getDate() + '/' + (date.getMonth() + 1) + '/' + date.getFullYear() + ' : ' + params.value[1];
           },
           axisPointer: {
               animation: false
           }
       },
       xAxis: {
           type: 'time',
           splitLine: {
               show: false
           }
       },
       yAxis: {
           type: 'value',
           boundaryGap: [0, '100%'],
           splitLine: {
               show: false
           }
       },
       series: [{
           name: '模拟数据',
           type: 'line',
           showSymbol: false,
           hoverAnimation: false,
           data: data
       }]
   };
   
   setInterval(function () {
   
       for (var i = 0; i < 5; i++) {
           data.shift();
           data.push(randomData());
       }
   
       myChart.setOption({
           series: [{
               data: data
           }]
       });
   }, 100);
   
   ```
   
   
   
   
   ### Other comments [其他信息]
   <!-- For example: Screenshot or Online demo -->
   <!-- [例如，截图或线上实例 (JSFiddle/JSBin/Codepen)] -->
   
   

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