On 22.04.2013 17:59, Michael Friendly wrote:
On 4/21/2013 1:28 PM, Michael Friendly wrote:
[Env: OS: Win Xp; R 2.15.2; IDE: eclipse/StatET]
Each time I update my heplots package, I get warnings from R CMD check
on R-Forge,
* checking sizes of PDF files under ‘inst/doc’ ... WARNING
‘gs+qpdf’ made some significant size reductions:
compacted ‘HE-examples.pdf’ from 739Kb to 366Kb
To follow up my own post, I did some more checking of whether/how to
compact PDFs on my own system. My conclusion is that that I am unable
to comply with the request from CRAN maintainers, even though I would
like to. Once again, I wonder why this cannot be handled on the CRAN
side automatically.
Because we cannot know if the result is acceptable. This is not a
lossless compression.
qpdf: running it from a cmd prompt (using the options from
tools::compactPDF) doesn't do very much compression
C:\R\test>qpdf --stream-data=compress --object-streams=generate
HE-examples.pdf
HE-examples-comp.pdf
C:\R\test>dir HE-examples*
04/22/2013 10:55 AM 699,191 HE-examples-comp.pdf
04/22/2013 10:28 AM 756,624 HE-examples.pdf
gs: I have gs installed at C:\Program Files\gs\gs9.07\bin\gswin32.exe,
but the gs installer doesn't put itself on the path, so
tools::compactPDF sees gs_cmd as empty:
> gs_cmd = Sys.getenv("R_GSCMD", "")
[1] ""
so it can't run gs+qpdf. OK, so I try to do it manually:
> Sys.setenv(R_GSCMD = "C:/Program Files/gs/gs9.07/bin/gswin32.exe")
> setwd("test")
>
> tools::compactPDF("HE-examples.pdf")
> tools::compactPDF("HE-examples.pdf", gs_quality="ebook")
But this doesn't do anything, not even changing the timestamp on the
file, because the file size doesn't change enough.
Either you changed it or not, there is no "not enough".
Best,
Uwe
C:\R\test>dir HE-examples.pdf
04/22/2013 10:28 AM 756,624 HE-examples.pdf
______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
