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2009 Nov 03
2
reshaping pairs of columns
Given a data frame consisting of a pointID and 12 pairs of (lat, long)
variables, with names
latA, longA, latB, longB, ... latL, longL, I want to reshape it into a
data frame with the structure
point source lat long
1 A ... ...
1 B ... ...
I've looked at reshape and plyr, but can't figure out how to do this.
Details of my data frame are below
> dput(head(maps))
structure(list(p...