[GitHub] [echarts] Ovilia commented on issue #15269: When setOption, whole series will rerender. How Can I only render changed series?

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

Ovilia commented on issue #15269:
URL: https://github.com/apache/echarts/issues/15269#issuecomment-872764074


   Usually when we render with Canvas, the basic process is to clear all the canvas and repaint all the elements. So this is what you get when calling setOption. If you wish to render part of the content out of performance consideration, you may set the series that you wish to re-render only with a different `zlevel` so that it will be displayed in another Canvas and only that Canvas will re-render when this series changes.
   In most cases, you don't have to do this, unless you have performance issues.


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