On Apr 30, 2014, at 11:44 PM, Marc Girondot wrote:
> Dear list-members,
>
> Can someone explains me why the last command gives an error. Thanks a lot:
> > outer(0:1, 0:1, FUN=function(x, y) {x+y})
> [,1] [,2]
> [1,] 0 1
> [2,] 1 2
> > outer(0:1, 0:1, FUN=function(x, y) {x})
> [,1] [,2]
> [1,] 0 0
> [2,] 1 1
> > outer(0:1, 0:1, FUN=function(x, y) {1})
> Erreur dans outer(0:1, 0:1, FUN = function(x, y) { :
> dims [produit 4] ne correspond pas à la longueur de l'objet [1]
>
> Of course I simplify a lot my problem.
Try using rep() to get a vector of the correct length:
> outer(0:1, 0:1, FUN=function(x, y) {rep(1, length(x))})
[,1] [,2]
[1,] 1 1
[2,] 1 1
>
> Thanks a lot
>
> Marc
>
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David Winsemius
Alameda, CA, USA
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