matplotlib-users Mailing List for matplotlib

I would try renaming the font cache file (in 
~/.matplotlib/fontList.cache).  It looks like it perhaps contains some 
invalid data.  If that works, can you send the old file to me (off list) 
so I can try to get to the bottom of how it got corrupted?

Mike

On 07/05/2011 04:29 AM, Marko Riedel wrote:
> Hi there,
>
> I wonder if there is I way how to use math symbols together with the 
> basemap class.
>
> Here is my problem:
>
> The lines
>
> import matplotlib.pyplot as plt
> plt.text(0.06  , 0.04, r"200 $\Omega$ m", fontsize=10, 
> transform=plt.gca().transAxes)
>
> work with a standard plot. However if I use basemap, I get the 
> following error:
>
>   File "/usr/lib/pymodules/python2.6/matplotlib/text.py", line 280, in 
> _get_layout
>     clean_line, self._fontproperties, ismath=ismath)
>   File 
> "/usr/lib/pymodules/python2.6/matplotlib/backends/backend_agg.py", 
> line 156, in get_text_width_height_descent
>     self.mathtext_parser.parse(s, self.dpi, prop)
>   File "/usr/lib/pymodules/python2.6/matplotlib/mathtext.py", line 
> 2797, in parse
>     font_output = fontset_class(prop, backend)
>   File "/usr/lib/pymodules/python2.6/matplotlib/mathtext.py", line 
> 658, in __init__
>     self._stix_fallback = StixFonts(*args, **kwargs)
>   File "/usr/lib/pymodules/python2.6/matplotlib/mathtext.py", line 
> 900, in __init__
>     fullpath = findfont(name)
>   File "/usr/lib/pymodules/python2.6/matplotlib/font_manager.py", line 
> 1306, in findfont
>     if not os.path.exists(font):
>   File "/usr/lib/python2.6/genericpath.py", line 18, in exists
>     st = os.stat(path)
> TypeError: coercing to Unicode: need string or buffer, dict found
>
> Thank you very much for your help!
>
> Marko
>
>
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-- 
Michael Droettboom
Science Software Branch
Space Telescope Science Institute
Baltimore, Maryland, USA

Hi there,

I wonder if there is I way how to use math symbols together with the basemap class.

Here is my problem:

The lines 

import matplotlib.pyplot as plt
plt.text(0.06  , 0.04, r"200 $\Omega$ m", fontsize=10, transform=plt.gca().transAxes)

work with a standard plot. However if I use basemap, I get the following error:

 
  File "/usr/lib/pymodules/python2.6/matplotlib/text.py", line 280, in _get_layout
    clean_line, self._fontproperties, ismath=ismath)
  File "/usr/lib/pymodules/python2.6/matplotlib/backends/backend_agg.py", line 156, in get_text_width_height_descent
    self.mathtext_parser.parse(s, self.dpi, prop)
  File "/usr/lib/pymodules/python2.6/matplotlib/mathtext.py", line 2797, in parse
    font_output = fontset_class(prop, backend)
  File "/usr/lib/pymodules/python2.6/matplotlib/mathtext.py", line 658, in __init__
    self._stix_fallback = StixFonts(*args, **kwargs)
  File "/usr/lib/pymodules/python2.6/matplotlib/mathtext.py", line 900, in __init__
    fullpath = findfont(name)
  File "/usr/lib/pymodules/python2.6/matplotlib/font_manager.py", line 1306, in findfont
    if not os.path.exists(font):
  File "/usr/lib/python2.6/genericpath.py", line 18, in exists
    st = os.stat(path)
TypeError: coercing to Unicode: need string or buffer, dict found

Thank you very much for your help!

Marko