Re: [R] indices of rows containing one or more elements >0

From: Berwin A Turlach <berwin_at_maths.uwa.edu.au>
Date: Wed, 13 Feb 2008 12:35:51 +0800

G'day Stanley,

On Wed, 13 Feb 2008 10:40:09 +0800
"Ng Stanley" <stanleyngkl_at_gmail.com> wrote:

> Hi,
>
> Given test <- matrix(c(0,2,0,1,3,5), 3,2)
>
> > test[test>0]
> [1] 2 1 3 5
>
> These are values >0
>
> > which(test>0)
> [1] 2 4 5 6
>
> These are array indices of those values >0
>
> > which(apply(test>0, 1, all))
> [1] 2
>
> This gives the row whose elements are all >0
>
> I can't seem to get indices of rows containing one or more elements >0

which(apply(test>0, 1 any)) instead of which(apply(test>0, 1, all)) ??

HTH. Cheers,

        Berwin


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