Re: [R] Conditional rows

From: Stanley Ng <stanleyngkl_at_gmail.com>
Date: Mon, 11 Feb 2008 21:12:57 +0800

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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Received on Mon 11 Feb 2008 - 13:23:28 GMT

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