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Posted to commits@echarts.apache.org by "GoldWood2000 (via GitHub)" <gi...@apache.org> on 2024/01/19 01:29:34 UTC
[I] [Feature] 如何获取map中label的坐标 [echarts]
GoldWood2000 opened a new issue, #19525:
URL: https://github.com/apache/echarts/issues/19525
### What problem does this feature solve?
例如在map渲染完成后，我如何获取此label的坐标
### What does the proposed API look like?
获取map的label的坐标
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Re: [I] [Feature] 如何获取map中label的坐标 [echarts]
Posted by "GoldWood2000 (via GitHub)" <gi...@apache.org>.
GoldWood2000 closed issue #19525: [Feature] 如何获取map中label的坐标
URL: https://github.com/apache/echarts/issues/19525
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Re: [I] [Feature] 如何获取map中label的坐标 [echarts]
Posted by "helgasoft (via GitHub)" <gi...@apache.org>.
helgasoft commented on issue #19525:
URL: https://github.com/apache/echarts/issues/19525#issuecomment-1899529317
It is hard to get the label positions from ECharts, and much easier to calculate them from the geoJson map file.
The [official example](https://echarts.apache.org/examples/en/editor.html?c=map-HK) reads from [this geoJson](https://echarts.apache.org/examples/data/asset/geo/HK.json). The file has all provinces and their contour line coordinates. For each province you need to sum all latitude and longitude values separately and calculate their mean. These two numbers will be the geographical center of the province, i.e. the province label position.
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