19 Apr
2012
19 Apr
'12
9:20 p.m.
On 04/19/2012 12:34 PM, Joel Forsberg wrote:
> Hello!
> I've just upgraded both operating system (Fedora 17) and Xwiki to 4.0 RC-1 and
got an issue with the formula macro. Whenever I use it, the resulting image created is
1020x1320 pixels big, mostly empty except for the (correctly sized) formula placed in the
bottom left corner of the .png image.
Thu Apr 19 17:49:52 UTC 2012 Sergiu Dumitriu wrote:
It works fine for me, so let's try and see where the problem occurs.
Start by putting this into a tex file called a.tex:
The renderer uses a three-step process, tex->dvi,
dvi->ps, ps->png.
Let's try them out in order:
latex --interaction=nonstopmode a.tex
This should produce a.dvi, which should be a very big
page with only the formula in the center, no other text. Check if there are any errors
displayed there. Try without --interaction to make latex stop at errors.
dvips -E a.dvi -o a.ps
This should produce a.ps, which should be tightly
cropped around the
formula. If it isn't then there's a problem, maybe dvips doesn't support
the -E parameter.
convert -density 120 a.ps a.png
This should produce a.png, having the same size as the
ps.
For reference, here's what I have locally (texlive
installation):
$ latex --version
pdfTeX 3.1415926-2.3-1.40.12 (TeX Live 2011)
kpathsea version 6.0.1
$ dvips --version
This is dvips(k) 5.991 Copyright 2011 Radical Eye Software
Thanks for the quick reply.
My texlive seem to produce a PostScript file that displays okay, but somehow the convert
step sets the canvas size to 1020x1320
Adding a -trim parameter to will work around the problem, such as:
convert -trim -density 120 a.ps a.png
I'll look for a mention of this behavior for Imagemagick shortly (need food)
(Sorry for messing up the thread, I guess..)
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For reference:
The files I produced: http://www.mediafire.com/file/6qv8tty0pn1nyz0/formula_test2.tar.bz
debug output of convert-step: http://pastebin.com/FdJPEYwr
convert -version
Version: ImageMagick 6.7.5-6 2012-03-06 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2012 ImageMagick Studio LLC
Features: OpenMP
latex --version
pdfTeX using libpoppler 3.141592-1.40.3-2.2 (Web2C 7.5.6)
kpathsea version 3.5.6
Compiled with libpng 1.5.8; using libpng 1.5.10
Compiled with zlib 1.2.5; using zlib 1.2.5
Compiled with libpoppler
dvips --version
dvips(k) 5.96.1
kpathsea version 3.5.6
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