
R version 2.10.0 (2009-10-26)
Copyright (C) 2009 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> library(sp)
> data(meuse)
> data(meuse.grid)
> coordinates(meuse) = ~x+y
> coordinates(meuse.grid) = ~x+y
> x = coordinates(meuse)
> y = coordinates(meuse.grid)
> out = spDists(meuse,meuse.grid)
> out2 = as.matrix(dist(rbind(coordinates(meuse),coordinates(meuse.grid))))
> out2 = out2[1:155,155+1:nrow(y)]
> # should be equal:
> sum(out2 - out)
[1] 0
> summary(as.vector(out2 - out))
   Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
      0       0       0       0       0       0 
> 
> out = spDists(meuse.grid,meuse)
> sum(out2 - t(out))
[1] 0
> summary(as.vector(out2 - t(out)))
   Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
      0       0       0       0       0       0 
> 
