[R] file size plot pdf

[Prof Brian Ripley]

On Fri, 13 May 2011, Marc Jekel wrote:

> Dear R-Fans,
>
> I have been lately working on some plots in R that I save as pdf via the 
> pdf() command. I have realized that when I open those files in Adobe and then 
> re-save it within Adobe ("save as..."), the size of the pdf files decreases 
> rapidly (e.g., from 4mb to 1mb). This can also be observed for smaller pdf 
> files (but not as drastically). Does anyone know if Adobe somehow compresses 
> pdf files + if it is possible to already do this within R (the quality of the 
> pdfs is the same as far as I can judge from perceptual inspection).

Yes.  Try upgrading your R to R-devel which supports compression, or 
use tools::compactDPF.

And this is actually documented in the help file ?pdf.

>
> Thanks for a hint,
>
> Marc
>
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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