WSA3 {micromap} | R Documentation |
An object of class 'SpatialPolygonsDataFrame' that was created from a shapefile of the U.S. level 3 ecoregion boundaries.
The format is: Formal class 'SpatialPointsDataFrame' [package "sp"].
This is just an example data set.
data(WSA3)
spplot(WSA3, zcol="WSA_3_NM", col.regions=rainbow(3, s=0.75))