[R] Generating random geographical coordinates
Berend Hasselman
bhh at xs4all.nl
Wed Oct 10 17:13:25 CEST 2012
On 10-10-2012, at 16:15, Poizot Emmanuel <emmanuel.poizot at cnam.fr> wrote:
> Dear all,
>
> I have two coordinates vectors, say X and Y of length n.
> I want to generate for each couple of coordinates X1,Y1 X2,Y2 X3,Y3....Xn,Yn a random coordinate which is located in a square define as X +/- dx and Y +/- dy.
> I saw the runif function which can generate for just one value at a time what I want : runif(1, X - dx, X + dx) for X and runif(1, Y - dy, Y + dy) for Y.
> I would like to know if there is not a more powerfull way in R to generate directly the set of random coordinates.
Yes there is. Just do
?runif
to get help on runif.
Berend
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