saberneko opened a new issue #11975: heatmap: there is a tiny gap between each
rect item,how to remove it?
URL: https://github.com/apache/incubator-echarts/issues/11975
### Version
4.4.0
### Reproduction link
[https://gallery.echartsjs.com/editor.html?c=xBk-X3QOJ-](https://gal
saberneko opened a new issue #11975: heatmap: there is a tiny gap between each
rect item,how to remove it?
URL: https://github.com/apache/incubator-echarts/issues/11975
### Version
4.4.0
### Reproduction link
[https://gallery.echartsjs.com/editor.html?c=xBk-X3QOJ-](https://gal