[R-sig-Geo] inter-point distance calcs
Jim Bouldin
jrbouldin at ucdavis.edu
Mon Aug 10 20:39:35 CEST 2009
> Sure. How about the function dist():
>
> d <- data.frame(x=sample(1:10, 5), y=sample(1:10, 5))
>
> dist(d)
> 1 2 3 4
> 2 3.605551
> 3 6.403124 7.071068
> 4 9.219544 7.211103 5.830952
> 5 8.062258 5.099020 7.211103 3.162278
Actually I spoke a bit too soon--I need to get the distances into the
following format (using your example above):
Point Pair Distance
1-2 3.6
1-3 6.4
1-4 9.2
. etc
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