Re: [Matplotlib-users] mathtext and fonts under Windows 8

[Michael D. <md...@st...>]

Is the Arial font file different on Windows 8 vs. Windows 7?  (Just a 
difference in file size would be enough to know).  If so, it's probably 
the nature of those differences that we need to look into.

Mike

On 01/16/2013 10:04 AM, CAB wrote:
> Dear Mike & Paul,
> Thanks for your replies.  I tried Mike's protocol, and I found that 
> font_manager found the Arial font ("C:\\Windows\\fonts\\Arial.ttf") in 
> the right place.  I don't have fontforge yet, so I guess I need to 
> install and check it out.
> But the thing that bothers me about this error is that it only occurs 
> if I try to mix mathtext and non-matplotlib font.  So matplotlib finds 
> Arial just fine.  And it finds the mathtext font fine.  Only the 
> mixture is fatal.  It's as if the parser loses track of the Arial 
> font, or it looks for a mathtext glyph in Arial.  Very strange that it 
> occurs only in Windows 8.
> Regarding Paul's response, I don't have LaTeX on the W8 computer, and 
> my impression is that mathtext doesn't look for "mathematical Arial", 
> instead there are some packaged fonts that it uses for this purpose, 
> like Computer Modern and STIX.
> I'll try to hunt this down further, and let you know if I find anything.
> Best,
> Chad
>
> *From:* Michael Droettboom <md...@st...>
> *To:* mat...@li...
> *Sent:* Thursday, January 10, 2013 7:35 AM
> *Subject:* Re: [Matplotlib-users] mathtext and fonts under Windows 8
>
> Since this is specific to Windows 8, I wonder if the Arial font has 
> been updated in that version.  If it's a newer OTF font, rather than a 
> TTF font, it's possible matplotlib can't read it correctly.
>
> You can see what font file is on each platform by starting up a Python 
> prompt and doing:
>
>   >>> from matplotlib import font_manager
>   >>> font_manager.findfont("Arial")
>
> It should display the path to the font.  From that, you should be able 
> to get the Arial file on each of your platforms and see if they are 
> different.  To get more details, you could open them up in the open 
> source "fontforge" tool.  Sorry I can't do this myself, as I don't 
> have access to anything past XP.
>
> If the fonts turn out to be different, as a workaround, you could try 
> backing up and then replacing the Arial font on your Windows 8 machine 
> with the one on your Windows 7 machine.
>
> Cheers,
> Mike
>
> On 01/09/2013 11:59 PM, Paul Hobson wrote:
>> Sounds like it might have something to do with your Latex 
>> installation (if any) or the barebones Latex-rendering done by MPL 
>> alone. Namely, they simply don't have the characters for mathematical 
>> Arial available.
>>
>> Not too sure though. Hopefully someone more knowledgeable responds.
>> -paul
>>
>>
>> On Tue, Jan 8, 2013 at 9:31 PM, CAB <ca...@ya... 
>> <mailto:ca...@ya...>> wrote:
>>
>>     Hi, All,
>>
>>     I am encountering a thorny problem when trying to run matplotlib
>>     under Windows 8. If I label an axis using a command like
>>
>>     ax.set_ylabel(r'time (s)', name='Arial'),
>>
>>     all is well.  But if  try to add mathtext to that, as in
>>
>>     ax.set_ylabel(r'time ($s$)', name='Arial'),
>>
>>     mathtext.py <http://mathtext.py/> throws an error (a very long
>>     stream) ending in "RuntimeError: Face has no glyph names". If I
>>     remove the "name='Arial'" above and let the program default to
>>     Bitstream Vera Sans, the mathtext works.
>>
>>     This problem does not occur under Windows 7 or XP; only under two
>>     different Windows 8 installations.  Any ideas what's going on?
>>
>>     Chad
>>
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