[R] Generating maps in R (Roger Bivand)

Aleksandr Andreev aleksandr.andreev at duke.edu
Wed Apr 2 03:54:39 CEST 2008

Roger Bivand Roger.Bivand at nhh.no writes:

>This was exactly why I emphasised care. One way to try to do this is
> to extract the FS data slot:
> FSd <- as(FS, "data.frame")
> and then merge() FSd and agg2, using - untried - something like:
> FS1d <- merge(FSd, agg2, by="row.names", all=TRUE)

It worked after I added one more step:

row.names(FS1d) <- FS1d$SUBJECT


Aleksandr Andreev
Duke University

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