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st: graph export to pdf


From   "Thomas Speidel" <thomassp@cancerboard.ab.ca>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: graph export to pdf
Date   Fri, 20 Jan 2006 13:00:48 -0700

For as much as I looked I could not find a way to specify a custom page
size when converting a ps or eps to pdf with Ghostscript's pdfwrite.
Even if you instruct Stata to export to ps by specifying a custom size,
the Ghostscript device will place your graph within a default pagesize.
The default pagesize is usually US letter size, but it can be changed to
any standard ISO size such as legal a4 etc.  Problem is if none of these
standard sizes match you graph size, there does not seem to be an easy
way with Ghostscript.  I've looked for an option in Acrobat's Distiller
too, but haven't found it (Distiller and Ghostscript's pdfwrite share a
lot of the parameters).  Like you, I too had to manually change the
bounding box dimensions in Acrobat.  This is fine for one or two graphs,
but what if you need to convert 20 or 80 graphs?

Fortunately, I did come across a solution. It's not elegant, but it
works, somewhat.  It involves using epstopdf.exe which you can find
here:
http://www.ctan.org/tex-archive/support/epstopdf/?action=/tex-archive/su
pport/

Epstopdf requires Ghostcript installed and will be looking for
gswin32c.exe (I believe that Mac users should have Ghostscript and most
of its devices installed).  I did have some problems trying to tell the
location of gswin32c.exe under Win (probably because of the spaces), so
I saved epstopdf.exe in the same location as gswin32c.exe.

Unfortunately, it seems that epstopdf cuts the main title.  I am hoping
someone in the Stata community can provide some suggestions...

So here is some example code.  I am working in Win environment, so you
would need to make the appropriate changes:

*****************************
*         Example           *
*****************************
sysuse auto
twoway scatter mpg weight, xsize(10) ysize(5) title("Test of epstopdf")
graph set eps logo off
graph export "C:\gs\gs8.53\bin\example.eps", cmyk(on)
orientation(landscape) replace

! cd /D C:\gs\gs8.53\bin
! epstopdf.exe --gsopt=-dPDFSETTINGS=/prepress
--gsopt=-dAutoRotatePages=/All --outfile=H:\example.pdf example.eps

capture erase C:\gs\gs8.53\bin\example.eps



Thomas

--
Thomas Speidel
Statistical Associate
Clinical Trials Unit
Tom Baker Cancer Centre
1331 - 29th Street N.W.
Calgary, AB, T2N 4N4

Tel. (403) 521-3370
Email: thomassp@cancerboard.ab.ca

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