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Posted to dev@echarts.apache.org by GitBox <gi...@apache.org> on 2019/06/19 08:57:45 UTC

[GitHub] [incubator-echarts] marlonchiu opened a new issue #10704: echarts heatmap热力图是否支持局部增量渲染? Does the heat map support local incremental rendering?

marlonchiu opened a new issue #10704: echarts heatmap热力图是否支持局部增量渲染? Does the heat map support local incremental rendering?
URL: https://github.com/apache/incubator-echarts/issues/10704
 
 
   ### Version
   4.2.0-rc.2
   
   ### Steps to reproduce
   开发中有这样的一个业务场景:热力图用来标识了一些分析指标,数据是实时增量分析的,通过建立websocket长链接,每次接收收据之后都是把新数据和上一次的数据组合,然后在页面上重新渲染视图,这个渲染过程刚开始是几十毫秒,不怎么影响;待到数据量增大以后目前40分钟以后,渲染一次的时间回达到700毫秒左右,这样就导致页面非常的卡顿。
   此外因为是实时分析,页面上有两个ckplayer播放窗口,热力图渲染导致播放器流卡顿延迟很明显,同时如果强制关闭浏览器也是关不掉或者说关闭起来很困难。
   请问echarts是否支持增量局部渲染数据,意思就是:已经渲染的数据图就不重新绘制了,只绘制新增加的?
   
   ### What is expected?
   已经渲染的数据图就不重新绘制了,只绘制新增加的
   
   ### What is actually happening?
   所有的数据更新视图重新绘制一遍
   
   <!-- This issue is generated by echarts-issue-helper. DO NOT REMOVE -->
   

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