I think this is what you want.
Y[Y>0] <- 1
--- "Armelini, Guillermo" <[EMAIL PROTECTED]>
wrote:
> Hello everyone!
>
> Is anybody can help me to solve this silly question
> that unfortunately I haven't found the right way to
> address it.
>
> Supose I have a matrix X[n,n] dimension
>
> I would like to calculate the product of the vectors
>
> Y=X[1,n]*X[n,1]
>
> Then I would like to run the following operation
>
> H=if(Y>0) {H[,1]=1}
>
> The problem is that the condition "if" works only
> for the first element of the matrix.
>
> Does anybody knows how to apply the conditional "if"
> to a entire vector?
>
> cheers
>
> Guillermo
>
>
>
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