[R] Functions on matrix row level

Arndt, Ulrich, VF-VP ulrich.arndt at vodafone.de
Mon Jan 28 16:06:41 CET 2002


Hi together,

I have some data in a matrix structure - say 1000 rows with 10 columns. And
I like to do some calculations (like max, avg or min) on row level. 
The only solution I found so fare was using a loop like 

for (i in 1:1000) {
       max[i]  <- max(matrix[I,])
}

It looks like that this is not very fast.
Does an other way exists?

Kind regards

          Ulrich


---------------------------------------------------------
This Mail has been checked for Viruses
Attention: Encrypted mails can NOT be checked!

**

Diese Mail wurde auf Viren geprueft
Hinweis: Verschluesselte mails koennen NICHT auf Viren geprueft werden!
---------------------------------------------------------

-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._



More information about the R-help mailing list