Hello,I am attempting to use the sample code in "Applied Spatial Data Analysis with R" but cannot get this to work and get this error:
> nc = readShapePoly(system.file("shapes/sids.shp", package="maptools")[1],
+ IDvar="FIPSNO", proj4string=CRS("+proj=longlat +ellps=clrk66"))
以下にエラー read.dbf(filen) : unable to open DBF file
Any ideas?
Thanks,
Pete
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