[R] Functions on matrix row level

[David Brahm]

Arndt, Ulrich, VF-VP <ulrich.arndt at vodafone.de> wrote:
> I like to do some calculations (like max, avg or min) on row level.

Prof Brian D Ripley <ripley at stats.ox.ac.uk> replied, in part:
> For average, rowMeans in R-devel is much faster still, if you need to save
> another 0.03 seconds ....

If you don't want to install a "devel" version of R and can't wait for 1.5.0,
try package "colSums" at:
  <http://cran.r-project.org/src/contrib/Devel/colSums_1.0.tar.gz>
which contains a function rowMeans() (but not rowMax or rowMin, which would be
nice additions).

   By the way, I will be submitting version 1.1 soon, which incorporates the
"2-pass" method in colVars and rowVars.
-- 
                              -- David Brahm (brahm at alum.mit.edu)
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