Description
I have a comment on http://matplotlib.org/users/pgf.html#pgf-tutorial,
which has a minor issue with fonts. Specifically, the example below does
not work with my machine - Debian squeeze, Tex Live 2012 backported from
unstable, matplotlib 1.2 backported from unstable.
- The documentation says
Rc parameters that control the behavior of the pgf backend:
[...]
pgf.texsystem Either “xelatex”, “lualatex” or “pdflatex”
It is worth mentioning the default is (it seems) "xelatex".
- It seems the default is "xelatex", but the specification
\setmathfont{XITS Math}
does not work with xelatex, at least for me, and possibly not for anyone
using Tex Live. See for example
http://tex.stackexchange.com/questions/50381/xelatex-and-unicode-math-problems
and
http://tex.stackexchange.com/questions/82113/subscript-is-set-too-low-in-math-mode-with-xits-math
It seems xelatex expects something like
\setmathfont{xits-math.otf}
I'm not sure why. In any case, I had to make a change to make this example
work. First, I have the original example, and then my changed version.
HERE IS THE ORIGINAL EXAMPLE. SUGGESTED CHANGES FOLLOW.
# -*- coding: utf-8 -*-
import matplotlib as mpl
mpl.use("pgf")
pgf_with_custom_preamble = {
"font.family": "serif", # use serif/main font for text elements
"text.usetex": True, # use inline math for ticks
"pgf.rcfonts": False, # don't setup fonts from rc parameters
"pgf.preamble": [
r"\usepackage{units}", # load additional packages
r"\usepackage{metalogo}", # load additional packages
r"\usepackage{unicode-math}", # unicode math setup
r"\setmathfont{XITS Math}",
r"\setmainfont{DejaVu Serif}", # font setup via preamble
]
}
mpl.rcParams.update(pgf_with_custom_preamble)
import matplotlib.pyplot as plt
plt.figure(figsize=(4.5,2.5))
plt.plot(range(5))
plt.xlabel(u"unicode text: я, ψ, €, ü, \\unitfrac[10]{°}{µm}")
plt.ylabel(u"\\XeLaTeX")
plt.legend([u"unicode math: $λ=∑_i^∞ μ_i^2$"])
plt.tight_layout(.5)
Option 1:
Add the line
"pgf.texsystem": "lualatex"
to the pgf_with_custom_preamble dict. I.e. switch to lualatex. Or
Option 2:
Replace
r"\setmainfont{XITS}",
r"\setmathfont{XITS Math}",
with
r"\setmainfont{xits-math.otf}",
Regards, Faheem