8000 怎么使用cnmaps生成符合中国标准的世界地图 · Issue #98 · cnmetlab/cnmaps · GitHub

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怎么使用cnmaps生成符合中国标准的世界地图 #98

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huddao opened this issue Jun 27, 2023 · 2 comments

huddao commented

如题，有时候需要绘制中国行政区划的时候也会涉及其他国家，请问要怎么制作出符合标准的世界地图呢

Member

Clarmy commented

@huddao 这个之前考虑过直接添加接壤国家的地图边界到包数据中： #41 ，目前还没做这个功能。
目前如果要自己做，可以考虑先自己解析接壤国家的国界线，用 MapPolygon 实例化成可以操作的多边形实例，然后用中国的国界对它做减法。

from cnmap import MapPolygon

# 假设已实例化后的印度国界为 raw_india_polygon，是 MapPolygon 对象。

intersect  = get_adm_maps(country="中华人民共和国", only_polygon=True, record="first") & raw_india_polygon
new_india_polygon = raw_india_polygon - intersect

# 用 new_india_polygon 画图

Author

huddao commented

感谢，我试一下

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