[R] Median computation

[Henrik Bengtsson]

See rowMedians() of the matrixStats package for replacing apply(x,
MARGIN=1, FUN=median). /Henrik

On Tue, May 22, 2012 at 12:34 PM, Preeti <preeti at sci.utah.edu> wrote:
> Hi,
>
> I have a 250,000 by 300 matrix. I am trying to calculate the median of
> those columns (by row) with column names that are identical. I would like
> this to be efficient since apply(x,1,median) where x is created by choosing
> only those columns with same column name and looping on this is taking a
> really long time. Is there an efficient way to do this?
>
> Thanks!
>
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