[matplotlib-devel] eps with usetex=False broken icw Ghostscript 9.07?

[David V. <dav...@gm...>]

Hi,

I am running Arch Linux, Matplotlib 1.2, Python 2.7, and today I realized
that generating *.eps figures when matplotlib is using the latex
output rc('text',
usetex=True) results in a corrupted eps figure in combination with
Ghostscript 9.07. The png variant of the same figure works fine, eps works
fine if usetex=False. Everything works fine when I downgrade back to
Ghostscript 9.06.

Is this related to this?
https://github.com/matplotlib/matplotlib/issues/1693
https://github.com/matplotlib/matplotlib/pull/1694
If it is, I guess the problem is already solved. Haven't tested that yet
(need to build matplitlib from git first...)

I have no idea if this is Arch Linux packaging, Ghostscript or Matplotlib
issue...hence this email.

Regards,
David


An example, from: http://matplotlib.org/users/usetex.html

#!/usr/bin/env python"""You can use TeX to render all of your
matplotlib text if the rcparameter text.usetex is set.  This works
currently on the agg and psbackends, and requires that you have tex
and the other dependenciesdescribed at
http://matplotlib.sf.net/matplotlib.texmanager.htmlproperly installed
on your system.  The first time you run a scriptyou will see a lot of
output from tex and associated tools.  The nexttime, the run may be
silent, as a lot of the information is cached in~/.tex.cache
"""from matplotlib import rcfrom numpy import arange, cos, pifrom
matplotlib.pyplot import figure, axes, plot, xlabel, ylabel, title, \
     grid, savefig, show

rc('text', usetex=True)rc('font', family='serif')figure(1,
figsize=(6,4))ax = axes([0.1, 0.1, 0.8, 0.7])t = arange(0.0, 1.0+0.01,
0.01)s = cos(2*2*pi*t)+2plot(t, s)
xlabel(r'\textbf{time (s)}')ylabel(r'\textit{voltage
(mV)}',fontsize=16)title(r"\TeX\ is Number
$\displaystyle\sum_{n=1}^\infty\frac{-e^{i\pi}}{2^n}$!",
      fontsize=16,
color='r')grid(True)savefig('tex_demo.eps')savefig('tex_demo.png')
show()


When converting the eps figure with imagemagick (just to check the file),
the following error is given:
$ convert Desktop/tex_demo.eps ddd.eps
Error: /dictstackunderflow in --end--
Operand stack:

Execution stack:
   %interp_exit   .runexec2   --nostringval--   --nostringval--
--nostringval--   2   %stopped_push   --nostringval--   --nostringval--
--nostringval--   false   1   %stopped_push   1900   1   3   %oparray_pop
1899   1   3   %oparray_pop   --nostringval--   1883   1   3
%oparray_pop   1771   1   3   %oparray_pop   --nostringval--
%errorexec_pop   .runexec2   --nostringval--   --nostringval--
--nostringval--   2   %stopped_push   --nostringval--
Dictionary stack:
   --dict:1169/1684(ro)(G)--   --dict:0/20(G)--   --dict:82/200(L)--
Current allocation mode is local
Last OS error: No such file or directory
Current file position is 102614
GPL Ghostscript 9.07: Unrecoverable error, exit code 1
Error: /dictstackunderflow in --end--
Operand stack:

Execution stack:
   %interp_exit   .runexec2   --nostringval--   --nostringval--
--nostringval--   2   %stopped_push   --nostringval--   --nostringval--
--nostringval--   false   1   %stopped_push   1900   1   3   %oparray_pop
1899   1   3   %oparray_pop   --nostringval--   1883   1   3
%oparray_pop   1771   1   3   %oparray_pop   --nostringval--
%errorexec_pop   .runexec2   --nostringval--   --nostringval--
--nostringval--   2   %stopped_push   --nostringval--
Dictionary stack:
   --dict:1169/1684(ro)(G)--   --dict:0/20(G)--   --dict:82/200(L)--
Current allocation mode is local
Last OS error: No such file or directory
Current file position is 102614
GPL Ghostscript 9.07: Unrecoverable error, exit code 1
convert: Postscript delegate failed `Desktop/tex_demo.eps': No such file or
directory @ error/ps.c/ReadPSImage/836.
convert: no images defined `ddd.eps' @
error/convert.c/ConvertImageCommand/3068.