Greetings. I'm unable to get mathtext to work properly on my linux system:
# cat /etc/redhat-release
Fedora release 13 (Goddard)
# uname -a
Linux localhost.localdomain 2.6.33.6-147.2.4.fc13.x86_64 #1 SMP Fri Jul 23
17:14:44 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux
The problem is essentially identical to one that is described in the thread
at:
http://www.mail-archive.com/matplotlib-users@lists.sourceforge.net/msg09208.html
I didn't see a real resolution to the problem in that thread, at least not one
that applied to me.
In brief, when I specify a math symbol in a text string, say:
r'$\pi$'
I get some "random" character (capital A in this case) at the place where I'm
supposed to see the Greek letter Pi.
Furthermore, if I try to coerce the use of the Greek letters by setting
"text.markup" to "tex", either interactively or in the rc file, I get an error
saying that it's not a valid parameter:
Bad key "text.markup" on line 161 in ... matplotlibrc
for instance. This is followed by the message:
You probably need to get an updated matplotlibrc file from
http://matplotlib.sf.net/_static/matplotlibrc or from the matplotlib
source distribution
But the file at that link still contains:
#text.markup:'plain' # Affects how text, such as titles and labels, are
# interpreted by default.
# 'plain': As plain, unformatted text
# 'tex': As TeX-like text. Text between $'s
# will be
# formatted as a TeX math expression.
# This setting has no effect when text.usetex
# is True.
# In that case, all text will be sent to TeX
# for
# processing.
I don't know what to make of this. I did the following to try to pin down the
parameters:
import matplotlib as mpl
import pprint
x = mpl.rcParams.keys()
x.sort()
pprint.pprint(x)
This produced:
.
.
.
'svg.image_noscale',
'text.color',
'text.dvipnghack',
'text.fontangle',
'text.fontsize',
'text.fontstyle',
'text.fontvariant',
'text.fontweight',
'text.latex.preamble',
'text.latex.preview',
'text.latex.unicode',
'text.usetex',
'timezone',
.
.
.
Indeed, there does not seem to be a "text.markup" in this list.
I have tried this both with and without an rc file, and I've tried it after
deleting completely my .matplotlib directory. I get the same results in all
cases.
OTOH, if I set:
text.usetex
to "True", I do get the expected mathematical symbols, albeit after a noticeable
delay.
I've got the following two matplotlib packages installed:
python-matplotlib-0.99.1.2-4.fc13.x86_64
python-matplotlib-tk-0.99.1.2-4.fc13.x86_64
and the system is running Python 2.6.4.
Any suggestions? Maybe I'm missing a package?
Thanks.
-- Mike
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