Re: [R] How to speed the shut down of the graphic device

[Philippe Hup�]

Prof Brian Ripley a �crit :

On Mon, 4 Aug 2003, Philippe Hup� wrote:

 

Andrew C. Ward a �crit :

   

Dear Philippe,

Perhaps you could try a different graphics device (maybe
postscript). On my machine, the time differences were all 1
second rather than the 3 you reported.If 300s is really
too long for you, you could get a new computer or run your
script on a faster one.
     

I have a computer with 3GHz processor (Pentium IV) and 2 Go of RAM so I 
don't think this is a matter of computer performance :).
   

My lowly 1.4GHz P4M laptop does it in 2.5 secs, so there does seem to be a 
performance problem with your computer.

BTW, the way to time a command is to use system.time()

 

Andrew C. Ward

CAPE Centre
Department of Chemical Engineering
The University of Queensland
Brisbane Qld 4072 Australia
[EMAIL PROTECTED]
Quoting Philippe Hup� <[EMAIL PROTECTED]>:



     

hello,

I use R1.7.1 under winXP and I am running the following
script example :
for (i in 1:10)
{
      x <- rnorm(100)
      png( paste("D:/essai",i,".png",sep=""))
      plot(x)
      t1 <- Sys.time()
      dev.off()
      t2 <- Sys.time()
      print(t2-t1)
     
}

at each step, it takes about 3 seconds to shut down the
graphic device. 
I want to generate about one hundred of image and of
course it takes too 
much time. Is there any trick ?

Philippe

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.



     

   

 

I have done the same thing under Debian/sid wiht R1.7.1 and it takes 
almost 0 second !! Then, is there any problem with winXP ?

--

--------------------------------------------------

Philippe Hup�
Institut Curie - Equipe Bioinformatique
26, rue d'Ulm - 75005 PARIS France
+33 (0)1 42 34 65 29
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>

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