Dear all, I am just starting to use the library maptools. Specifically, I want to use it as a quick way to map results from various multivariate analyses (e.g. cluster analyses) directly in R. I encountered problems appending newly generated data (cluster memberships) to the SpatialPolygonsDataFrame object. Unfortunately, the documentation is not really helpful. But I am sure that this is an easy question for you. Thanks in advance, Holger The code so far:
my.polys <- readShapePoly("Z://mypoly.shp",IDvar="ID",verbose=T)
plot(my.polys)