[Matplotlib-users] Tex-style factorial ! in legend

[andreasl]

Hello,

When I use something along the lines of

legend( (r'$0.5^x/x!$', r'$1^x/x!$') )

for some reason omegas are drawn instead of the ! sign. I can't find an 
alternative here  nor 
elsewhere. Any ideas?


Many thanks,

Andreas

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Re: [Matplotlib-users] Tex-style factorial ! in legend

[andreasl]

On 25/09/12 11:44, Damon McDougall wrote:

On Tue, Sep 25, 2012 at 11:10 AM, andreasl  wrote:

Hello,

When I use something along the lines of

legend( (r'$0.5^x/x!$', r'$1^x/x!$') )

for some reason omegas are drawn instead of the ! sign. I can't find an
alternative here nor elsewhere. Any ideas?


Looks fine to me. Do you have rcParams['text.usetex']=True?



Thanks Damon. No, I was using matplotlib's own mathtex 
<http://matplotlib.org/users/mathtext.html> rather than direct LaTeX 
support <http://matplotlib.org/users/usetex.html>. If I do set usetex to 
True, trying to plot anything results in errors, the output including:



! LaTeX Error: File `type1cm.sty' not found.

This issue is mentioned 
<http://matplotlib.org/users/usetex.html#possible-hangups> on the 
matplotlib webpage (I am using Ubuntu-derived Mint). I'm not keen to 
install type1cm as part of Mint's space-chomping 485MB 
texlive-latex-extra package. May figure out how to install it 
individually; if anyone has experience with this, please shout. Cheers.
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Re: [Matplotlib-users] Tex-style factorial ! in legend

[andreasl]

Thanks Mike. Interesting that it works for you with mathtext only.

I am in some confusion about the matplotlib version I'm using. Synaptic 
(package manager) says that for matplotlib I have 
0.99.1.2-3ubuntu1installed. Asking for help(matplotlib) in python gives

> FILE
> /usr/local/lib/python2.6/dist-packages/matplotlib-1.0.1-py2.6-linux-i686.egg/matplotlib/__init__.py

I did not change anything manually in matplotlibrc, of which I seem to 
have three versions:

> /etc/matplotlibrc
> /usr/local/lib/python2.6/dist-packages/matplotlib/mpl-data/matplotlibrc
> /usr/local/lib/python2.6/dist-packages/matplotlib-1.0.1-py2.6-linux-i686.egg/matplotlib/mpl-data/matplotlibrc

The first one has backend: TkAgg whereas the other two have backend: 
GTKAgg. Everything else is commented out. I usually work from within the 
Spyder IDE, where the backend is set (via Preferences) to Qt4Agg. I get 
the faulty behaviour (omega instead of !) both from within Spyder and 
from within a console ipython session (where presumably either TkAgg or 
GTKAgg is used). Setting the backend to either TkAgg or GTKAgg in Spyder 
results in no plot at all.


On 25/09/12 19:05, matplotlib-users-requ...@lists.sourceforge.net wrote:
> Message: 1
> Date: Tue, 25 Sep 2012 09:01:14 -0400
> From: Michael Droettboom 
> Subject: Re: [Matplotlib-users] Tex-style factorial ! in legend
> To: 
> Message-ID: <5061ab1a.8020...@stsci.edu>
> Content-Type: text/plain; charset="iso-8859-1"
>
> This is working for me, even with text.usetex set to "False".  What
> version of matplotlib are you using?  Do you have anything set in your
> matplotlibrc file?
>
> Mike
>
> On 09/25/2012 06:10 AM, andreasl wrote:
>> Hello,
>>
>> When I use something along the lines of
>>
>> legend( (r'$0.5^x/x!$', r'$1^x/x!$') )
>>
>> for some reason omegas are drawn instead of the ! sign. I can't find
>> an alternative here <http://matplotlib.org/users/mathtext.html> nor
>> elsewhere. Any ideas?
>>
>> Many thanks,
>>
>> Andreas


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