[GitHub] [incubator-echarts] tmtron opened a new issue #10238: data-background not visible for custom series

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

tmtron opened a new issue #10238: data-background not visible for custom series
URL: https://github.com/apache/incubator-echarts/issues/10238
 
 
   ### Version
   4.2.1
   
   ### Reproduction link
   [https://ecomfe.github.io/echarts-examples/public/editor.html?c=cycle-plot](https://ecomfe.github.io/echarts-examples/public/editor.html?c=cycle-plot)
   
   ### Steps to reproduce
   create a chart with a custom series and activate the zoom-slider component.
   
   ### What is expected?
   the data-zoom should show the data-background
   
   ### What is actually happening?
   the data-background is empty
   
   ---
   
   Not sure if this is a bug - or has just not been implemented (in the later case, please consider this a feature request)
   
   Since the custom render function returns graphic elements, it should be possible to show a data-preview, right?  
   
   If not, then it is maybe possible to use the data  (via encode), so that we can at least display the regions where we have some data.
   
   
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