He pasado las últimas horas intentando que el backend de PGF funcione. Estaba intentando usar xelatex, pero no funcionaba en absoluto.
Ahora he hecho este ejemplo:
# -*- coding: utf-8 -*-
import matplotlib as mpl
mpl.use("pgf")
pgf_with_rc_fonts = {
"pgf.texsystem": "pdflatex"
}
mpl.rcParams.update(pgf_with_rc_fonts)
import matplotlib.pyplot as plt
plt.figure(figsize=(4.5,2.5))
plt.plot(range(5))
plt.savefig('figure.pgf')
lo que genera un error. Llegaré a eso en un minuto. Sin embargo, el error desaparece si elimino plt.savefig('figure.pgf'). La salida devuelta por la terminal es:
Traceback (most recent call last):
File "Dokumenter/fys2130/oblig4/test.py", line 13, in <module>
plt.savefig('figure.pgf')
File "/home/marius/anaconda/lib/python2.7/site-packages/matplotlib/pyplot.py", line 577, in savefig
res = fig.savefig(*args, **kwargs)
File "/home/marius/anaconda/lib/python2.7/site-packages/matplotlib/figure.py", line 1470, in savefig
self.canvas.print_figure(*args, **kwargs)
File "/home/marius/anaconda/lib/python2.7/site-packages/matplotlib/backend_bases.py", line 2194, in print_figure
**kwargs)
File "/home/marius/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_pgf.py", line 835, in print_pgf
self._print_pgf_to_fh(fh, *args, **kwargs)
File "/home/marius/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_pgf.py", line 814, in _print_pgf_to_fh
RendererPgf(self.figure, fh),
File "/home/marius/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_pgf.py", line 422, in __init__
self.latexManager = LatexManagerFactory.get_latex_manager()
File "/home/marius/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_pgf.py", line 232, in get_latex_manager
new_inst = LatexManager()
File "/home/marius/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_pgf.py", line 322, in __init__
raise LatexError("LaTeX returned an error, probably missing font or error in preamble:\n%s" % stdout)
matplotlib.backends.backend_pgf.LatexError: LaTeX returned an error, probably missing font or error in preamble:
This is pdfTeX, Version 3.1415926-2.4-1.40.13 (TeX Live 2012/Debian)
restricted \write18 enabled.
**---! /home/marius/.texmf-var/web2c/pdftex/pdflatex.fmt doesn't match pdftex.pool
(Fatal format file error; I'm stymied)
Mi versión de matplotlib es 1.4.2.
Mi pregunta es, ¿cómo puedo solucionar un problema como este?
No tengo idea de por dónde empezar.