R : Copyright 2005, The R Foundation for Statistical Computing Version 2.1.1 (2005-06-20), ISBN 3-900051-07-0 R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under certain conditions. Type 'license()' or 'licence()' for distribution details. R is a collaborative project with many contributors. Type 'contributors()' for more information and 'citation()' on how to cite R or R packages in publications. Type 'demo()' for some demos, 'help()' for on-line help, or 'help.start()' for a HTML browser interface to help. Type 'q()' to quit R. > # library(sp) > # library(maptools) > # data(ncshp) > # nc1 <- as.SpatialPolygons.Shapes(nc.shp$Shapes, as.character(nc.shp$att.data$FIPS)) > # df <- nc.shp$att.data > # rownames(df) <- as.character(nc.shp$att.data$FIPS) > # identical(rownames(df), sapply(slot(nc1, "polygons"), function(i) slot(i, "ID"))) > # nc <- SpatialPolygonsDataFrame(nc1, df) > # > # nc$X = factor(sample(1:5,100,replace=T),labels=letters[1:5]) > # nc$Y = factor(sample(1:5,100,replace=T),labels=letters[6:10]) > # spplot(nc, c("X","Y")) >
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