Re: [R] creating a matrix subset based on a threshold cutoff

From: Henrique Dallazuanna <wwwhsd_at_gmail.com>
Date: Tue, 04 Mar 2008 08:28:52 -0300

You have a table or matrix?

if is matrix:

set.seed(123)
x <- matrix(rnorm(100), 10, 10)
cutoff <- -1.5
do.call(rbind, apply(x, 1, function(.x).x[any(.x < cutoff)]))

On 04/03/2008, rich_at_thevillas.eclipse.co.uk <rich_at_thevillas.eclipse.co.uk> wrote:
>
> Hi,
>
> I have a table of x rows and y columns. The table is huge and so i'd like
> to create a subset of the data containing rows where any of the y values are
> below a threshold, say 1e-4. Is there a simple way of doing this in R?
>
>
> thanks
>
> Rich
> ______________________________________________
> R-help_at_r-project.org mailing list
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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>

-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

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Received on Tue 04 Mar 2008 - 11:32:24 GMT

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