On 16.07.2011 13:42, Jeroen Ooms wrote:
That warning is necessarily rather pessimistic. We haven't changed the
format for several years. But we might, without notice.
Thank you, this is very helpful. One final question regarding this method:
suppose a function prints multiple plots, i.e. multiple pages to a PDF. Is
it possible to record all of these plots at once? The code below only
records the final plot. I would like to record all of them, without
modifying myfn:
You cannot, since this takes a snapshot from the current device. You
will have to recordPlot() after each plot, actually.
Uwe Ligges
myfn<- function(mylm){
plot(mylm, ask=F)
}
mylm<- lm(dist~speed, data=cars);
pdf(tempfile())
dev.control(displaylist="enable")
myfn(mylm);
myplots<- recordPlot()
dev.off()
save(myplot, file="myplot.RData")
Another approach (or the start to one that you could build on) is the
plot2script function in the TeachingDemos package (which uses recordPlot
internally).
But it is probably best to save the resulting data from the long process,
that could then be quickly plotted as others have mentioned.
--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.s...@imail.org
801.408.8111
-----Original Message-----
From: r-help-boun...@r-project.org [mailto:r-help-bounces@r-
project.org] On Behalf Of Jeroen Ooms
Sent: Monday, July 11, 2011 12:22 PM
To: David Winsemius
Cc: r-help@r-project.org
Subject: Re: [R] Save generic plot to file (before rendering to device)
You can also save a data (or function) object to an .Rdata file with
save(objname, file="filename.Rdata") and your colleagues could then
load("filename.Rdata") in R.
Thanks for the responses. I found an old post by Gabor Grothendieck
that
shows what I want. Basically the trick is to save the displaylist to an
object:
dev.control(displaylist="**enable") # enable display list
plot(1:10)
myplot<- recordPlot() # load displaylist into variable
You can now store myplot and later fetch it and play it back via
print(myplot)
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--
Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics,
http://www.stats.ox.ac.uk/~**ripley/<http://www.stats.ox.ac.uk/~ripley/>
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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