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2011 Apr 03
0
Plotting data on a US County Map
...ariable on a map (in the shapefile) using a color range per county (e.g. white = min(number) = 2, black = max(number) = 15). Can anyone help me actually plotting the data on the map? This is how far I got. Thanks! DF = data.frame(read.table(textConnection(" A CNTY_FIPS number 1 US001 2 2 US002 8 3 US003 3 4 US004 5 5 US005 6 6 US006 7 7 US007 9 8 US008 9 9 US009 10 10 US010 11 11 US011 13 12 US012 15"),head=TRUE,stringsAsFactors=FALSE)) library(maptools) library(ggplot2) library(gpclib) gpclibPermit() setwd("C:/Documents") us_counties.shp <- readShapeSp...