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January 2009
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2009.01.16 15:54 "Tiff2ps centering and imagemask operator option", by Richard Nolde
2. tiff2ps option -c (Joerg Schlueter) Joerg, I believe that you are correct in saying that the centering code is not working. I have been working on a patch that provides rotations of 90, 180, and 270 degrees plus an "auto" mode in which the image will be rotated to best fit the size specified with -h and -w and I can confirm your problem. I am testing my patch with the center option as well and will upload the final version to bugzilla when I have finished testing. In testing my new code, (based on libtiff-3.9 CVS tree), I discovered that the -m option to use the "imagemask" operator produces invalid Postscript on some Tiff files generated by Adobe Photoshop 7.0 (The only version to which I have access.) Without the "imagemask" Postscript operator, eg using the default of "image" instead, the files seem to be correctly read by both Photoshop and Ghostscript. With the -m flag, Photoshop errors out with "the parser module cannot parse the file" and Ghostscript 8.63 on Fedora 8 blows up with: gs -q -sDEVICE=bbox -dNOPAUSE -dNOPROMPT -dBATCH Widetest-map-centered.ps Error: /typecheck in --imagemask-- Operand stack: 3200 1000 1 --nostringval-- --nostringval-- Execution stack: %interp_exit .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 %stopped_push --nostringval-- --nostringval-- --nostringval-- false 1 %stopped_push 1905 1 3 %oparray_pop 1904 1 3 %oparray_pop 1888 1 3 %oparray_pop 1771 1 3 %oparray_pop --nostringval-- %errorexec_pop .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 %stopped_push --nostringval-- 1810 5 4 %oparray_pop --nostringval-- --nostringval-- Dictionary stack: --dict:1147/1684(ro)(G)-- --dict:0/20(G)-- --dict:70/200(L)-- --dict:1/100(L)-- Current allocation mode is local Last OS error: 2 Current file position is 517 GPL Ghostscript 8.63: Unrecoverable error, exit code 1 Richard Nolde > Message: 2 > Date: Tue, 13 Jan 2009 17:38:44 +0100 > From: "Joerg Schlueter" <joerg29@gmail.com> > Subject: [Tiff] tiff2ps option -c > To: tiff@lists.maptools.org > Message-ID: > <947639ed0901130838l73806151rac0253ecabb0d786@mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > > Hi, > > I'm using tiff2ps as described at > http://www.firstpr.com.au/sys-admin/TIFF-to-PDF > and wanted to center small images: > > tiff2ps -c -w5.51 -h7.76 *.tif | ps2pdf13 -sPAPERSIZE=a4 - > documents.pdf > > seems that the -c option has no effect, the images are located at the > bottom of the page, aligned left. I have Mepis7 with preinstalled > libtiff (don't know which version this would be), but also tested > using v4.00 beta2, same result > > is there another way to center the images both horizontal and vertical? > > thanks in advance, kind regards > Joerg >