Major Issue with 0.91.2 and Python-2.5

Community matplotlib-users
1

I upgraded my notebook to Slackware-12.0 (which includes python-2.5) and
discovered that the application I'm developing no longer ran. Turns out that
matplotlib went missing during the upgrade.

   So, I just built matplotlib-0.91.2 using the same matplotlib.Slackbuild
script I used on my workstation/server, but this time it failed. The font
manager seems to be the issue; the error message repeatedly is: "Found an
unknown keyword in AFM header (was Underline)". Specifically, the error is
in File "/usr/lib/Python2.5/site-packages/matplotlib/afm.py", line 166, in
_parse_char_metrics
   name=vals[2].split()[1]
IndexError: List index out of range

   Is this unique to me? What do I do to fix the problem?

TIA,

Rich

···

--
Richard B. Shepard, Ph.D. | Integrity Credibility
Applied Ecosystem Services, Inc. | Innovation
<http://www.appl-ecosys.com> Voice: 503-667-4517 Fax: 503-667-8863

2

I suspect there is an .afm font file on your new system that is untested with matplotlib and exhibiting something "new".

I would first try to track down which font file it is, and then send it to me off list and I'll have a look at what might be tripping up matplotlib.

Cheers,
Mike

Rich Shepard wrote:

···

   I upgraded my notebook to Slackware-12.0 (which includes python-2.5) and
discovered that the application I'm developing no longer ran. Turns out that
matplotlib went missing during the upgrade.

   So, I just built matplotlib-0.91.2 using the same matplotlib.Slackbuild
script I used on my workstation/server, but this time it failed. The font
manager seems to be the issue; the error message repeatedly is: "Found an
unknown keyword in AFM header (was Underline)". Specifically, the error is
in File "/usr/lib/Python2.5/site-packages/matplotlib/afm.py", line 166, in
_parse_char_metrics
   name=vals[2].split()[1]
IndexError: List index out of range

   Is this unique to me? What do I do to fix the problem?

TIA,

Rich

--
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

3

Mike,

   I'm not sure that I know which font file is the problem. Here's the output
from trying to run my application on python-2.5 (the top two lines are
repeated many times before we get to the traceback):

Found an unknown keyword in AFM header (was Underline)
Traceback (most recent call last):
   File "eikos.py", line 3, in <module>
     import wx, serial, os, config, functions
   File "/home/rshepard/projects/eikos/functions.py", line 7, in <module>
     import pylab as p
   File "/usr/lib/python2.5/site-packages/pylab.py", line 1, in <module>
     from matplotlib.pylab import *
   File "/usr/lib/python2.5/site-packages/matplotlib/pylab.py", line 208, in <module>
     from matplotlib import mpl # pulls in most modules
   File "/usr/lib/python2.5/site-packages/matplotlib/mpl.py", line 3, in <module>
     from matplotlib import axis
   File "/usr/lib/python2.5/site-packages/matplotlib/axis.py", line 20, in <module>
     from font_manager import FontProperties
   File "/usr/lib/python2.5/site-packages/matplotlib/font_manager.py", line 1132, in <module>
     _rebuild()
   File "/usr/lib/python2.5/site-packages/matplotlib/font_manager.py", line 1123, in _rebuild
     fontManager = FontManager()
   File "/usr/lib/python2.5/site-packages/matplotlib/font_manager.py", line 913, in __init__
     self.afmdict = createFontDict(self.afmfiles, fontext='afm')
   File "/usr/lib/python2.5/site-packages/matplotlib/font_manager.py", line 512, in createFontDict
     font = afm.AFM(fh)
   File "/usr/lib/python2.5/site-packages/matplotlib/afm.py", line 294, in __init__
     parse_afm(fh)
   File "/usr/lib/python2.5/site-packages/matplotlib/afm.py", line 282, in parse_afm
     dcmetrics_ascii, dcmetrics_name = _parse_char_metrics(fh)
   File "/usr/lib/python2.5/site-packages/matplotlib/afm.py", line 166, in _parse_char_metrics
     name = vals[2].split()[1]
IndexError: list index out of range

   If it's relevant to the issue, I no longer have ~/.matplotlib/fonts.cache as someone
suggested yesterday that I delete it, and it's not been regenerated.

Thanks,

Rich

···

On Tue, 11 Mar 2008, Michael Droettboom wrote:

I suspect there is an .afm font file on your new system that is untested with matplotlib and exhibiting something "new".

I would first try to track down which font file it is, and then send it to me off list and I'll have a look at what might be tripping up matplotlib.

--
Richard B. Shepard, Ph.D. | Integrity Credibility
Applied Ecosystem Services, Inc. | Innovation
<http://www.appl-ecosys.com> Voice: 503-667-4517 Fax: 503-667-8863