Hi Jouni,

Wow, that worked a treat. Thank you very much! Maybe you should post  
that to the -devel mailing list, too!

On the computer that this bug didn't occur, the ~/Library/Fonts  
directory is completely empty! I wonder where it is looking for  
lcmssi8.afm if it isn't in ~/Library/Fonts

Yeah I didn't want to play around with the installed files Macports  
creates, so I installed matplotlib from svn and, also since I don't  
know how to apply a patch, I just edited the afm.py to make your  
changes. This worked fine, and I no longer get the error!

Also, as I now have produced a graph (just a sin wave) as a test, the  
~/.matplotlib directory contains some files (fontList.cache and  
tex.cache). It seems as though these files are created to aid in the  
speed of producing plots in the future by saving previously produced  
text output.

Thank you very much, Jouni!
Regards,
--Damon

On 15 Sep 2009, at 12:49, Jouni K. Seppänen wrote:

> Damon McDougall <damon.mcdoug...@gmail.com> writes:
>
>> (Pdb) p fh
>> <closed file '/Users/Damon/Library/Fonts/lcmssi8.afm', mode 'r' at
>
> That's a font that probably came with a TeX distribution and somehow  
> got
> installed in your font library.
>
>> (Pdb) p line
>> 'C 0 ; WX 708.333 ; N Gamma ; B 0 0 836.364 684.027 ;'
>
> Failing on this line is a bug in matplotlib, since the AFM spec says
> that bounding-box coordinates are "numbers", not "integers".  
> Apparently
> not many AFM files use that precise bounding boxes, since we haven't  
> run
> into this before.
>
> I don't know how the MacPorts packaging system would react to  
> modifying
> installed files, but I imagine that applying the attached patch should
> fix this.
>
>> Also, after some curiosity, I realised the file ~/.matplotlib/
>> fontList.cache doesn't exist. In fact, the ~/.matplotlib directory is
>> empty, there aren't even any hidden files. On my other computer,
>> matplotlib works fine and the ~/.matplotlib directory contains three
>> files: fontList.cache, fontManager.cache and tex.cache.
>
> Maybe the files just didn't get written into your directory, since
> matplotlib bailed out at the first failure.
>
> Index: lib/matplotlib/afm.py
> ===================================================================
> --- lib/matplotlib/afm.py     (revision 7750)
> +++ lib/matplotlib/afm.py     (working copy)
> @@ -165,7 +165,8 @@
>         num = _to_int(vals[0].split()[1])
>         wx = _to_float(vals[1].split()[1])
>         name = vals[2].split()[1]
> -        bbox = _to_list_of_ints(vals[3][2:])
> +        bbox = _to_list_of_floats(vals[3][2:])
> +        bbox = map(int, bbox)
>         # Workaround: If the character name is 'Euro', give it the  
> corresponding
>         # character code, according to WinAnsiEncoding (see PDF  
> Reference).
>         if name == 'Euro':
>
> -- 
> Jouni K. Seppänen
> http://www.iki.fi/jks
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