[R] plot slow?
Andrew C. Ward
s195404 at student.uq.edu.au
Fri Oct 25 03:24:42 CEST 2002
I tried the following commands with R1.6.0 on Win2K:
> x <- 1:1000000
> system.time(plot(x,x,pch="."))
The plot took about 28s on my PIII. This seems okay for 1000000
points. By any chance are you an author of Igor :-)
Regards,
Andrew C. Ward
CAPE Centre
Department of Chemical Engineering
The University of Queensland
Brisbane Qld 4072 Australia
andreww at cheque.uq.edu.au
Quoting Seth Northrop <seth at reflectivity.com>:
>
> Hi,
>
> I just installed R and am comparing it to other packages (such
> as Igor).
> So, you'll have to excuse me if this is a stupid question. I
> run the
> simple command:
>
> plot(1:1000000)
>
> And it seems SO slow! Igor blasts through this.
>
> My theory is that R is redrawing the screen for every point
> that's being
> graphed. Is it possible to control how often R redraws a plot
> as its
> building it - or, is there some other trick here to speeding
> up plots with
> lots of points?
>
> Thanks!
> Seth
>
>
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