[R] replace() in matrix

[Ryan Elmore]

Probably not the most elegant, but if you have
tmp <- matrix(like below)
(1-(tmp==1))*tmp 
should give you the desired result.

-Ryan Elmore
PSU - Dept of Statistics

On Mon, 2 Jul 2001, Tord Snall wrote:

> Dear all,
> How do I replace values of a matrix, for exemple I want the matrix
> 
> 1	24	1	1	1
> 24	1	1	1	1
> 1	1	1	45	104
> 1	1	45	1	92
> 1	1	104	92	1
> 
> to be replaced by 
> 
> 0	24	0	0	0
> 24	0	0	0	0
> 0	0	0	45	104
> 0	0	45	0	92
> 0	0	104	92	0
> 
> Could someone please help me with that?
> 
> Thanks in advance!
> 
> Sincerely,
> Tord Snäll
> 
> -----------------------------------------------------------------------
> Tord Snäll
> Avd. f växtekologi, Evolutionsbiologiskt centrum, Uppsala universitet
> Dept. of Plant Ecology, Evolutionary Biology Centre, Uppsala University
> Villavägen 14			
> SE-752 36 Uppsala, Sweden
> Tel: 018-471 28 82 (int +46 18 471 28 82) (work)
> Tel: 018-25 71 33 (int +46 18 25 71 33) (home)
> Fax: 018-55 34 19 (int +46 18 55 34 19) (work)
> E-mail: Tord.Snall at ebc.uu.se
> http://www.vaxtbio.uu.se/resfold/snall.htm
> ------------------------------------------------------------------------
> 
> -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
> r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
> Send "info", "help", or "[un]subscribe"
> (in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
> _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
> 

-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._