[R] Conditional rows

[Stanley Ng]

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