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2005 Feb 28 14:53

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Re: [vox-tech] another PS2PDF question [solved]
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Re: [vox-tech] another PS2PDF question [solved]

On Monday 28 February 2005 12:46 pm, Jonathan Stickel wrote:
> Dylan Beaudette wrote:
> > Well, after a little bit of googling, it looks like there was a rather
> > simple solution. Since ps2pdf14 and epstopdf were just sending some
> > pre-defined parameters to ghost script, it is possible to setup the gs
> > environment, and then call epstopdf:
> >
> > export GS_OPTIONS=-dPDFSETTINGS=/prepress
> > epstopdf --nocompress file.eps
> >
> > This will produce a PDF of the correct page size, without JPEG
> > compression on embedded images!
> I don't know if your images are color or not, but your solution is not
> sufficient when dealing with embedded color images (at least for me).
> I've found that I need to edit the "epstopdf" script.  The two lines
> that deal with "GSOPTS" need to be changed to:
> my $GSOPTS = "-dAutoFilterColorImages=false
> -dColorImageFilter=/FlateEncode ";
> $GSOPTS = "-dEncodeColorImages=false " unless $::opt_compress;
> In fact, it is OK to compress the images as long as Flate encoding is
> used rather that JPEG.  The above edit does this.

Ah... Interesting. I wonder how or if the "-dPDFSETTINGS=/prepress" setting 
and the ones that you suggested are related. Before trying your method my 
images were looking good, with a final PDF size of 6.4Mb. After altering my 
epstopdf script as you suggested, the PDF file is 54Mb, and the images *seem* 
to be the same.... however it would take a bit of research to find out just 
how different they are. Any suggestions on a good place to search for 

> > Just for the record, this allows one to create a poster in something like
> > Inkscape (http://www.inkscape.org/), an opensource page layout program,
> > and then save the file as an EPS. Unfortunately this EPS file is not
> > easily sent to a printer (tried opening it in Illustrator 10, and there
> > were numerous propblems in terms of printable area, etc.), thus the above
> > method will create a JPEG compression-less PDF which can easily be
> > printed from a PDF viewer.
> How does inkscape compare to xfig?

Well, it is a little easier on the eyes (similar to illustrator), but some 
features are still a little bit lacking... On Debian Testing it gets updated 
fairly often, and with each release gets better and better.

Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis
vox-tech mailing list

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