Re: [vox-tech] another PS2PDF question [solved]
On Monday 28 February 2005 02:45 pm, Jonathan Stickel wrote: [snip] Using my suggested hack, try epstopdf foo.pdf, i.e. allow the default compression flag to stay on. You should get a compressed (smaller) file, but the image should still be crisp. Thanks for the suggestions. My PDF files are beingcreated quite nicely now! The best doc I can find is http://www.cs.wisc.edu/~ghost/doc/gnu/7.05/Ps2pdf.htm. This, with trial and error, lead me to my suggestion above. From what I can tell, the prepress setting has the same color image encoding options as the others, so I don't think the results will be much different. That website was a good start, however it is lacking information on the more finer points of PDF creation. I did a little more digging , and here is what I found; this website: http://www.texnik.de/hyperref/hyperref.phtml has a lot of nice details on PDF creation in general. Also, it is possible to change the default GS PDF creation behavior here; /usr/share/gs-gpl/8.01/lib/gs_pdfwr.ps Cheers! -- Dylan Beaudette Soils and Biogeochemistry Graduate Group University of California at Davis 530.754.7341 ___ vox-tech mailing list vox-tech@lists.lugod.org http://lists.lugod.org/mailman/listinfo/vox-tech
Re: [vox-tech] another PS2PDF question [solved]
On Monday 28 February 2005 11:02 am, Dylan Beaudette wrote: Hi, I have a poster (36 x 48) that is saved in PS format. using epstopdf, i can create a PDF file that has the correct page dimensions, but the JPEG compression makes the images in the PDF look bad. even with the --nocompression flag, PDFs from epstopdf still contain some compression artifacts... I have tried using ps2pdf14 like this: ps2pdf14 -dAutoFilterxxxImages=false -dAutoRotatePages=/None -dPDFSETTINGS=/prepress poster.ps ... in the past this has produced nice PDFs without compression artifacts, but for some reason, when i try to use this with a poster sized PS file, the resulting PDF is clipped to about 8.5 x 11 any ideas on how to either: 1. create a PDF from epstopdf without *any* JPEG compression or 2. get a full-sized PDF from ps2pdf14 ? thanks in advance for any ideas... this is a problem that has been driving me nuts for a while now... 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! 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. Cheers, -- Dylan Beaudette Soils and Biogeochemistry Graduate Group University of California at Davis 530.754.7341 ___ vox-tech mailing list vox-tech@lists.lugod.org http://lists.lugod.org/mailman/listinfo/vox-tech
Re: [vox-tech] another PS2PDF question [solved]
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. 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? Jonathan ___ vox-tech mailing list vox-tech@lists.lugod.org http://lists.lugod.org/mailman/listinfo/vox-tech
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 answers? 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 530.754.7341 ___ vox-tech mailing list vox-tech@lists.lugod.org http://lists.lugod.org/mailman/listinfo/vox-tech
Re: [vox-tech] another PS2PDF question [solved]
Dylan Beaudette wrote: 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 answers? Using my suggested hack, try epstopdf foo.pdf, i.e. allow the default compression flag to stay on. You should get a compressed (smaller) file, but the image should still be crisp. The best doc I can find is http://www.cs.wisc.edu/~ghost/doc/gnu/7.05/Ps2pdf.htm. This, with trial and error, lead me to my suggestion above. From what I can tell, the prepress setting has the same color image encoding options as the others, so I don't think the results will be much different. Jonathan ___ vox-tech mailing list vox-tech@lists.lugod.org http://lists.lugod.org/mailman/listinfo/vox-tech
