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readShapePoly()我试图使用包 maptools 上的函数将 shapefile 导入 R ,但它输出此错误:
readShapePoly()
错误 en .asSpatialPolygonsShapes(Map$Shapes, IDs, proj4string = proj4string, : 不是多边形形状
我能做什么?为什么会这样?
谢谢!