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如何$Name_3在空间多边形中的字段识别的区域子集中（例如，只有“Magugu”和“Nkaiti）”中的一种颜色？我玩弄了plot()一个子集向量，但没有成功。提前非常感谢，W

Formal class 'SpatialPolygonsDataFrame' [package "sp"] with 5 slots
  ..@ data       :'data.frame': 2800 obs. of  14 variables:
  .. ..$ PID      : int [1:2800] 97867 97868 97869 97870 97871 97872 97873 97874 97875 97876 ...
  .. ..$ ID_0     : int [1:2800] 225 225 225 225 225 225 225 225 225 225 ...
  .. ..$ ISO      : chr [1:2800] "TZA" "TZA" "TZA" "TZA" ...
  .. ..$ NAME_0   : chr [1:2800] "Tanzania" "Tanzania" "Tanzania" "Tanzania" ...
  .. ..$ ID_1     : int [1:2800] 12 12 12 12 12 12 12 12 12 12 ...
  .. ..$ NAME_1   : chr [1:2800] "Manyara" "Manyara" "Manyara" "Manyara" ...
  .. ..$ ID_2     : int [1:2800] 52 52 52 52 52 52 52 52 52 53 ...
  .. ..$ NAME_2   : chr [1:2800] "Babati" "Babati" "Babati" "Babati" ...
  .. ..$ ID_3     : int [1:2800] 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 ...
  .. ..$ NAME_3   : chr [1:2800] "Magugu" "Mamire" "Mwada" "Nkaiti" ...
  .. ..$ NL_NAME_3: chr [1:2800] "" "" "" "" ...
  .. ..$ VARNAME_3: chr [1:2800] "" "" "" "" ...
  .. ..$ TYPE_3   : chr [1:2800] "Division" "Division" "Division" "Division" ...
  .. ..$ ENGTYPE_3: chr [1:2800] "Division" "Division" "Division" "Division" ...
  ..@ polygons   :List of 2800
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基础图形plot()处理颜色的方式与所有基础图形对象的处理方式相同：传递一个颜色向量。向量对于 SpatialPolygonsDataFrame 的每个元素都有一个元素，元素内容是颜色。

有关如何在基本图形中绘制颜色的一般情况，请参阅此问题： Plot with conditional colour based on values in R

这个问题针对 SPDF 的特定应用： https ://gis.stackexchange.com/questions/36877/how-do-i-change-the-polygon-fill-color-and-border-color-for-spatialpolygons-对象

于 2012-12-07T18:04:21.797 回答