[R] matching more than two vectors (?)
juliane_struve at yahoo.co.uk
Fri Jan 16 21:57:23 CET 2009
I am trying to obtain values for pointdistance from another dataframe by matching UTMX and UTMY coordinates, but I am not sure how to introduce the second coordinate.
PointDF$pointdistance=DistanceDF$distance[match(PointDF$UTMX,DistanceDF$UTMX & PointDF$UTMY,DistanceDF$UTMY )]
is wrong but (hopefully) illustrates what I am trying to do.
Could somebody help ?
Thank you very much.
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