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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