[R] Conditional rows
Stanley Ng
stanleyngkl at gmail.com
Mon Feb 11 14:12:57 CET 2008
That works beautfully. Why using test<=0.2 || test >0.3 gives error ?
-----Original Message-----
From: Gabor Csardi [mailto:csardi at rmki.kfki.hu]
Sent: Monday, February 11, 2008 18:27
To: Ng Stanley
Cc: r-help
Subject: Re: [R] Conditional rows
which(apply(test<=0.2, 1, all))
See ?which, ?all, and in particular ?apply.
Gabor
On Mon, Feb 11, 2008 at 06:22:09PM +0800, Ng Stanley wrote:
> Hi,
>
> Given a simple example, test <- matrix(c(0.1, 0.2, 0.1, 0.2, 0.1,
> 0.1, 0.3, 0.1, 0.1), 3, 3)
>
> How to generate row indexes for which their corresponding row values
> are less than or equal to 0.2 ? For this example, row 2 and 3 are the
> correct ones.
>
> Thanks
>
> [[alternative HTML version deleted]]
>
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--
Csardi Gabor <csardi at rmki.kfki.hu> UNIL DGM
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