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#3 Cannot plot if TeX Live is manually installed
closed-invalid
nobody
None
5
2014-08-14
2010-11-28
Anonymous
No
I'm not able to plot with pyxplot package provided by Ubuntu Maverick (version 0.8.1):
pyxplot> plot sin(x)
Internal Error: dvi file does not exist!
I cannot plot also with Debian Sid package (version 0.8.3), error message is the same.
Building from source I get a different error message:
pyxplot> plot sin(x)
Internal Error: Could not find TFM file
I believe, both of these error messages are related to the fact that LaTeX is not installed on your system, or if it is, it is not at the standard place. Ubuntu doesn't ship with LaTeX, you have to add that by hand.
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I have TeX Live 2010 installed fromt ctan.
Last edit: Anonymous 2015-12-25
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How can I make pyxplot know what is LaTeX path? I succeeded in building pyxplot, configuration was successful, but it seems pyxplot is not able to find LaTeX.
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PyXPlot detects the path to LaTeX using the library libkpathsea, which is a part of TeX. As a fallback option, since this library is quite hard to come by under MacOS, PyXPlot uses shell command kpsewhich, which should be shipped as a part of any LaTeX install.
PyXPlot requires access to various internal LaTeX datafiles which are frequently not shipped with minimal texlive installations. For example, TFM files provide data on the dimensions of characters and are needed to get alignment right. The error messages you are seeing are indicating that some of these datafiles are not present in your LaTeX install and that you need a more complete installation. Under the latest LTS Ubuntu, 10.04, the following packages are required IN ADDITION to the core texlive package:
texlive-latex-extra, texlive-latex-recommended, texlive-fonts-recommended, texlive-fonts-extra
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Thank you for your response!
I have both the library libkpathsea and kpsewhich (they passed configure checks when I built pyxplot from source).
I don't use Ubuntu packages for TeX Live but I've downloaded it from http://www.tug.org/texlive/ and use a FULL installation scheme, all packages of TeX Live are installed.
In svn 998, I've made the error message about missing TFM files a little more informative, so that it should tell you the name of the file that it can't find. Would you mind trying again with the new svn version? The problem won't be fixed, but we'll know which font is causing the issue. If the file is foo.tfm, then in summary, the problem is that 'kpsewhich foo.tfm' isn't finding a path to that particular tfm file.
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That's the new error message:
pyxplot> plot sin(x)
Internal Error: Could not find TFM file 'cmbx10.tfm'. You may be able to fix this with a more complete installation of tex.
but the file is present:
$ locate cmbx10.tfm
/usr/local/texlive/2010/texmf-dist/fonts/tfm/public/cm/cmbx10.tfm
/usr/local/texlive/2010/texmf-dist/fonts/tfm/public/cmcyr/kcmbx10.tfm
/usr/local/texlive/2010/texmf-dist/fonts/tfm/public/cmcyr/wcmbx10.tfm
/usr/local/texlive/2010/texmf-dist/fonts/tfm/public/cmcyr/xcmbx10.tfm
/usr/local/texlive/2010/texmf-dist/fonts/tfm/public/cmcyr/ycmbx10.tfm
This is almost certainly a bug with TeX rather than PyXPlot. A useful test you can do is to type 'kpsewhich cmbx10.tfm" at a shell prompt. If that does not output the path to this tfm file, then that is in itself a bug in TeX. If that does output the path, then there is a temporary hack which will make PyXPlot work.
In the configure script, replace line 309 (which tests for the header file kpathsea/kpathsea.h) with "if false". This means that the test for libkpathsea will always fail, and PyXPlot will fall back on using the shell kpsewhich command instead (which you've just shown to work).
If that temporary hack solves your problem, it still leaves the question of why libkpathsea isn't returning useful data to PyXPlot. Given that the kpsewhich command is simply a wrapper for libkpathsea, the only possibility that I can think of is that you might have an old copy of the library floating around from a previous install of TeX, whilst your kpsewhich binary relates to the new install. As regards PyXPlot, it seems hard to see what more we can do if TeX's own resource-finding mechanism tells us the file isn't present.
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You are right, I have libkpathsea package provided from Ubuntu. Its version is 2009-7 (see http://packages.ubuntu.com/maverick/libkpathsea5\), while my TeX Live distribution is 2010. kpsewhich returns the right path:
$ kpsewhich cmbx10.tfm
/usr/local/texlive/2010/texmf-dist/fonts/tfm/public/cm/cmbx10.tfm
and your hack fixes the problem, so I'm going to close this bug as invalid. Thank you!
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