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

[Uwe Ligges]

Andrew C. Ward wrote:

> 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.


Let me point out that the "shut down" of a device means that the final 
calculations and writing of the file is done at that time. So we have to 
expect it consumes some time.

Uwe Ligges


> Andrew C. Ward
> 
> CAPE Centre
> Department of Chemical Engineering
> The University of Queensland
> Brisbane Qld 4072 Australia
> andreww at cheque.uq.edu.au
> 
> 
> Quoting Philippe Hupé <Philippe.Hupe at curie.fr>:
> 
> 
>>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
>>
>>______________________________________________
>>R-help at stat.math.ethz.ch mailing list
>>https://www.stat.math.ethz.ch/mailman/listinfo/r-help
>>
> 
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help