pissang edited a comment on pull request #15095:
URL: https://github.com/apache/echarts/pull/15095#issuecomment-862152229
@ssthouse Here is a common way to set style from the option:
```ts
sector.useStyle(seriesModel.getModel('emptyCircleStyle').getItemStyle());
```
Some notes:
+ Need to use `useStyle` here so the style properties can be reset to
default when developers didn't set it in the new options. Meanwhile `setStyle`
will merge the new style to the existing style.
+ `seriesModel.getModel('emptyCircleStyle')` get a model subset which only
includes `emptyCircleStyle` option.
+ `getItemStyle` get the full mapped style object from the model. It
includes fill and stroke. Meanwhile, there are other two methods that can get a
mapped style object. `getLineStyle` which only includes stroke. `getAreaStyle`
which only includes fill.
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