点击热力图某区域，给上方对应图形添加阴影部分

[palespring]

Version

4.8.0

Reproduction link

https://gallery.echartsjs.com/editor.html?c=xnbEV04gQb&v=4

Steps to reproduce

1、点击grid1中的热力图其中一部分； 2、grid0中的对应折线图区域，显示阴影部分；

What is expected?

比如，当我点击热力图中的【1，2016】方块的时候，对应上方折线图时，我希望折线图中，出现宽度跟此方块宽度相同（也就是阴影部分宽度的起点与终点跟热力图中的点击的方块一致），高度拉满（对应折线图中0-100）的阴影图形；当我点击热力图中的【3，2018】时，之前的阴影消失，出现新的阴影部分，宽度依然跟当前的点击的方块保持一致（起点终点相同，并非0开始），高度也是同上，拉满（0-100）

What is actually happening?

目前尚未实现

谢谢！

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[palespring]

您好，您的邮件已收到，谢谢