creating a matrix subset based on a threshold cutoff
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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