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

[Henrique Dallazuanna]

I think that this shoul works:

do.call(rbind, apply(as.table(x), 1, function(.x).x[any(.x < cutoff)]))

Change as.table(x) by your table

On 04/03/2008, rich @ thevillas. eclipse. co. uk
<rich at thevillas.eclipse.co.uk> wrote:
>
>
>
>
>  sorry, it would probably better be described as a table
>
> thanks
>
>
>
>
>
> On Tue Mar 4 11:28 , "Henrique Dallazuanna" sent:
>
>
> 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
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>
>
>  --
>  Henrique Dallazuanna
>  Curitiba-Paraná-Brasil
>  25° 25' 40" S 49° 16' 22" O
>
>
>
>


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