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画中国地图或者省份地图时，能不能只显示它自己不要多余部分？ #10

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hutaohutc opened this issue May 11, 2019 · 1 comment
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画中国地图或者省份地图时，能不能只显示它自己不要多余部分？ #10

hutaohutc opened this issue May 11, 2019 · 1 comment

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@hutaohutc
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大为，你好，问个小问题：在画中国地图或者省份地图时，能不能只显示它自己不要多余部分？我好像没找到这个参数，原理的话我觉得是将地图数据与要显示的数据先连接一下，然后把没连接上的都去掉就可以了，类似下面这样，然后画出来就可以了

mapdata = merge(地图数据,数据框数据，by='id',all.x = T)
mapdata2 =mapdata[ ia.na(value),]

平时在leaflet上都是这么操作的，但是每次画中国地图都要去找一遍地图数据比较麻烦，leafletCN自带数据很方便，希望有空看到回答下~
@hutaohutc
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Same as #6

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