[R] Replacing string in matrix with zero

[Rui Barradas]

Hello,

I doubt your Inf is a string, R does have the numeric value Inf (and 
-Inf), just try 1/0.
As for the question,

x <- matrix(1:9, ncol = 3)
diag(x) <- 1/0
x
x[x == Inf] <- 0
x

Note that it could also be diag(x) <- 0

Hope this helps,

Rui Barradas
Em 14-11-2012 22:13, Nick Duncan escreveu:
> Dear All,
>
> I have a matrix in which the diagonal has the string "Inf" in it. In
> order to be able to do cluster analysis this needs to be replaced with
> a Zero.
> I can do this by putting it into Excel, replacing  and putting it back
> into R but it's tedious, and I am sure there is a simple way to do it
> in R.
> If you have the route to do this, it would be much appreciated.
> Best wishes
> Nick Duncan
>
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