Re: [R] mApply instead of by ???

From: Frank E Harrell Jr <>
Date: Fri 01 Jul 2005 - 02:03:18 EST

Marten Winter wrote:

Now that's a brief note. mApply in the Hmisc package may have large speed advantages over by for large datasets. Also look at the summarize function in Hmisc, which uses mApply.

Frank E Harrell Jr   Professor and Chair           School of Medicine
                      Department of Biostatistics   Vanderbilt University

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Received on Fri Jul 01 02:08:10 2005

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