[R] Conditional rows

[Gabor Csardi]

Because you need

test <= 0.2 | test >0.3

See ?"|" 

Gabor

On Mon, Feb 11, 2008 at 09:12:57PM +0800, Stanley Ng wrote:
> 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
[...]

-- 
Csardi Gabor <csardi at rmki.kfki.hu>    UNIL DGM