Re: [Matplotlib-users] import problem after upgrade to matplotlib 1.3.1-1

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After a bit of digging I found that the problem is caused by the line:

KPX Y ydieresis -'0

in the font files jkplmsc8a.afm and  jkpmsc8a.afm installed with the
package texlive-fonts-extra. When afm.py parses this line it fails because
it can't convert the last token "-'0" to float.

I don't know much about AFM so I'm not sure what is the best way to fix
this. Should I modify afm.py to handle this line (remove the single quote)
or edit the afm files? And to whom should I send a bug report, matplotlib
or texlive-fonts-extra?

Thanks,

- Ivan
--
Ivan Lima
Woods Hole Oceanographic Institution, MC&G MS #25
360 Woods Hole Road, Woods Hole, MA 02543-1543 USA

On Fri, Nov 1, 2013 at 5:13 PM, Ivan Lima <iv...@wh...> wrote:

> After upgrading to matplotlib 1.3.1-1 importing matplotlib.pyplot fails
> with the error:
>
> Python 2.7.5+ (default, Sep 17 2013, 15:31:50)
> [GCC 4.8.1] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import matplotlib.pyplot
> Found an unknown keyword in AFM header (was Each)
> Found an unknown keyword in AFM header (was )
> Found an unknown keyword in AFM header (was The)
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Found an unknown keyword in AFM header (was Each)
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Found an unknown keyword in AFM header (was )
> Found an unknown keyword in AFM header (was The)
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Found an unknown keyword in AFM header (was )
> Found an unknown keyword in AFM header (was The)
> Found an unknown keyword in AFM header (was )
> Found an unknown keyword in AFM header (was The)
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Found an unknown keyword in AFM header (was Each)
> Found an unknown keyword in AFM header (was )
> Found an unknown keyword in AFM header (was The)
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Found an unknown keyword in AFM header (was Each)
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Found an unknown keyword in AFM header (was )
> Found an unknown keyword in AFM header (was The)
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Found an unknown keyword in AFM header (was )
> Found an unknown keyword in AFM header (was The)
> Found an unknown keyword in AFM header (was )
> Found an unknown keyword in AFM header (was The)
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Value error parsing header in AFM: UnderlinePosition -41,5039
> Value error parsing header in AFM: UnderlineThickness 43,9453
> Traceback (most recent call last):
>
>   File "<stdin>", line 1, in <module>
>   File "/usr/lib/pymodules/python2.7/matplotlib/pyplot.py", line 24, in
> <module>
>     import matplotlib.colorbar
>   File "/usr/lib/pymodules/python2.7/matplotlib/colorbar.py", line 29, in
> <module>
>     import matplotlib.collections as collections
>   File "/usr/lib/pymodules/python2.7/matplotlib/collections.py", line 23,
> in <module>
>     import matplotlib.backend_bases as backend_bases
>   File "/usr/lib/pymodules/python2.7/matplotlib/backend_bases.py", line
> 50, in <module>
>     import matplotlib.textpath as textpath
>   File "/usr/lib/pymodules/python2.7/matplotlib/textpath.py", line 11, in
> <module>
>     import matplotlib.font_manager as font_manager
>   File "/usr/lib/pymodules/python2.7/matplotlib/font_manager.py", line
> 1356, in <module>
>     _rebuild()
>   File "/usr/lib/pymodules/python2.7/matplotlib/font_manager.py", line
> 1341, in _rebuild
>     fontManager = FontManager()
>   File "/usr/lib/pymodules/python2.7/matplotlib/font_manager.py", line
> 1008, in __init__
>     self.afmlist = createFontList(self.afmfiles, fontext='afm')
>   File "/usr/lib/pymodules/python2.7/matplotlib/font_manager.py", line
> 563, in createFontList
>     font = afm.AFM(fh)
>   File "/usr/lib/pymodules/python2.7/matplotlib/afm.py", line 342, in
> __init__
>     parse_afm(fh)
>   File "/usr/lib/pymodules/python2.7/matplotlib/afm.py", line 331, in
> parse_afm
>     doptional = _parse_optional(fh)
>   File "/usr/lib/pymodules/python2.7/matplotlib/afm.py", line 313, in
> _parse_optional
>     d[key] = optional[key](fh)
>   File "/usr/lib/pymodules/python2.7/matplotlib/afm.py", line 246, in
> _parse_kern_pairs
>     c1, c2, val = _to_str(vals[1]), _to_str(vals[2]), _to_float(vals[3])
> ValueError: could not convert string to float: -'0
>
> The problem is with the Adobe Font Metric. Has anyone run into this
> problem and found a solution or workaround? Any help is greatly appreciated.
>
> My system is Debian testing with Python 2.7.5 and NumPy 1.7.1-3.
>
> Thanks,
> --
> Ivan Lima
> Woods Hole Oceanographic Institution, MC&G MS #25
> 360 Woods Hole Road, Woods Hole, MA 02543-1543 USA
>