[R] zero replacement

[Chong Gu]

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   Date: Mon, 2 Aug 1999 15:14:43 -0700
   From: Michael Camann <camann at babylon.cnrs.humboldt.edu>
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   AARRGGHH!  Sometimes it's the simple things that are particularly frustrating, 
   especially late at night....

   Can anyone suggest a simple means for replacing all of the zero values in a 
   matrix with NANs?  I ended up writing an awk script to massage the input file, 
   which works, of course, but is rather an inelegant blunt instrument.  I'd 
   prefer an R operation.  I'm certain that I'm missing something obvious here....

   --Mike

   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   Michael A. Camann            mac24 at axe.humboldt.edu
   Assistant Professor of Zoology        Voice: 707-826-3676
   Dept. of Biological Sciences        Fax: 707-826-3201
   Humboldt State University
   Arcata, CA 95521-8299

       http://www.humboldt.edu/~mac24/camann.html
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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