[R] Why R is 200 times slower than Matlab ?
Gabor Csardi
csardi at rmki.kfki.hu
Wed Apr 30 22:29:55 CEST 2008
I would rather not comment on matlab (where is
your matlab code by the way?), but your function
could be simplified a bit:
grw.permute <- function(v) {
cbind( rep(v, each=length(v)), rep(v, length(v)) )
}
> system.time(tmp <- f( 1:300))
user system elapsed
0.020 0.000 0.019
This is on my quite busy 4 years old laptop....
Best,
Gabor
On Wed, Apr 30, 2008 at 04:15:46PM -0400, Zhandong Liu wrote:
> I am switching from Matlab to R, but I found that R is 200 times slower than
> matlab.
>
> Since I am newbie to R, I must be missing some important programming tips.
>
[...]
--
Csardi Gabor <csardi at rmki.kfki.hu> UNIL DGM
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