Generating random geographical coordinates
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