Could you please paste the exact code you are using? (the one with the pdf
and dev.off, outside the loop )

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On Sat, Oct 23, 2010 at 4:53 PM, <news@aleblanc.cotse.net> wrote:

> David Winsemius <dwinsemius@comcast.net> writes:
>
> > On Oct 22, 2010, at 12:50 PM, <news@aleblanc.cotse.net> wrote:
> >
> >> Tal Galili <tal.galili@gmail.com> writes:
> >>
> >>> I suspect that using "dev.copy2eps" Is not going to help you here.
> >>>
> >>> Please try again using:
> >>>
> >>>  pdf(...)  # Check: ?pdf
> >>>  for(i in something)
> >>>  {
> >>>     plot(things)
> >>>  }
> >>>  dev.off()
> >>>
> >>> But give pdf() the file path.
> >>> Make sure you can make it work with simple plots.  then check it on
> >>> your
> >>> situation, and let us know if it works :)
> >>> (I had it work with very heavy plots - so I trust it will work for
> >>> you)
> >>>
> >>> (p.s: please keep cc'ing the r-help list so others will know the
> >>> stage of your
> >>> problem, in case others would like to add more help :) )
> >>>
> >>> Cheers,
> >>> Tal
> >>>
> >>
> >> The problem is that the filename changes with each iteration of the
> >> loop, so I need to
> >> save the graph inside the loop.
> >> I tried this:
> >>
> >> for(...)
> >> {
> >>    ...
> >>    pdf(...)
> >>    barplot(...)
> >> }
> >>
> >> but I just got a load of empty graphs.
> >
> > Because you failed to follow Ted directions to use dev.off()
> >
> > pdf() just opens the file for writing, dev.off() executes the writing
> > and closes properly.
> >
> > --
> > David.
> I just tried with dev.off() but still the same problem.
> I tried with pdf() and dev.off() inside the loop, and with them outside
> (pdf before the loop,
> and dev.off after). Same results each time: an empty pdf file.
> I am using R version 2.11.1 if this makes any difference.
> --
> aleblanc
>

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