[R] apply()

[Kaspar Pflugshaupt]

On Friday 16 March 2001 09:55, Ko-Kang at xtra.co.nz wrote:
> Hi,
>
> I input this command on a data matrix:
>  >   apply( traffic, 2, function(z){z-mean(z)})
>
> and got the following error messages:
>   Error in sum(..., na.rm = na.rm) : invalid "mode" of argument
>
> Can anyone tell me what is wrong here?

Is it really a normal matrix? Because the following works here:

 m <- matrix(rnorm(100), nrow=10)
 apply(m,2,function(z){z-mean(z)})

(R 1.2.2 on Linux)

Cheers

Kaspar

P.S: Please refrain from sending HTML mails. Your message was all but 
unreadable on my screen because I haven't the required font and my mail 
client does not (yet) filter HTML to text

-- 


Kaspar Pflugshaupt
Geobotanical Institute
ETH Zurich, Switzerland

http://www.geobot.umnw.ethz.ch
mailto:pflugshaupt at geobot.umnw.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
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._