[Matplotlib-users] Problems with AFM fonts.

[Clovis G. <cl...@pe...>]

The example is (under Windows XP, Matplotlib 0.86.2, using Tkinter after 
making a "clean" matplotlib installation):

from pylab import *
rcParams['ps.useafm']=True
a=arange(0,10)
figure(1)
plot(a,2*a)
show()

Until now everything is OK.
When I press SaveFigure button in the NavigationToolbar the error 
messages are:

Exception in Tkinter callback
Traceback (most recent call last):
  File "D:\Python24\lib\lib-tk\Tkinter.py", line 1345, in __call__
    return self.func(*args)
  File 
"D:\Python24\Lib\site-packages\matplotlib\backends\backend_tkagg.py", 
line 637, in save_figure
    self.canvas.print_figure(fname)
  File 
"D:\Python24\Lib\site-packages\matplotlib\backends\backend_tkagg.py", 
line 183, in print_figure
    agg.print_figure(filename, dpi, facecolor, edgecolor, orientation)
  File 
"D:\Python24\Lib\site-packages\matplotlib\backends\backend_agg.py", line 
479, in print_figure
    ps.print_figure(filename, dpi, facecolor, edgecolor, orientation)
  File 
"D:\Python24\Lib\site-packages\matplotlib\backends\backend_ps.py", line 
1048, in print_figure
    self.figure.draw(renderer)
  File "D:\Python24\Lib\site-packages\matplotlib\figure.py", line 524, 
in draw
    for a in self.axes: a.draw(renderer)
  File "D:\Python24\Lib\site-packages\matplotlib\axes.py", line 1438, in 
draw
    self.xaxis.draw(renderer)
  File "D:\Python24\Lib\site-packages\matplotlib\axis.py", line 562, in draw
    tick.draw(renderer)
  File "D:\Python24\Lib\site-packages\matplotlib\axis.py", line 161, in draw
    if self.label1On: self.label1.draw(renderer)
  File "D:\Python24\Lib\site-packages\matplotlib\text.py", line 858, in draw
    self._mytext.draw(renderer)
  File "D:\Python24\Lib\site-packages\matplotlib\text.py", line 338, in draw
    bbox, info = self._get_layout(renderer)
  File "D:\Python24\Lib\site-packages\matplotlib\text.py", line 181, in 
_get_layout
    tmp, heightt = renderer.get_text_width_height(
  File 
"D:\Python24\Lib\site-packages\matplotlib\backends\backend_ps.py", line 
274, in get_text_width_height
    font = self._get_font_afm(prop)
  File 
"D:\Python24\Lib\site-packages\matplotlib\backends\backend_ps.py", line 
298, in _get_font_afm
    font = AFM(file(fontManager.findfont(prop, fontext='afm')))
IOError: [Errno 2] No such file or directory: 
'D:\\Python24\\share\\matplotlib\\phvr8a.afm'

Obviously, there are no "*.afm" files in the 
"D:\python24\share\matplotlib\" directory.
To be exact, there isn't even a "D:\python24\share\matplotlib\" directory!
The same script runs fine when  rcParams['ps.useafm']=False
The same bug (?) seemed to exist in Matplotlib 0.86.1.

Thanks for the support,
Clovis Goldemberg