Re: [Matplotlib-users] uppercase greek mathtext patch (was: mathtext)

[Steve S. <el...@gm...>]

Jouni K Seppanen wrote:
> John Hunter <jdh...@ac...> writes:
> 
> 
>>What you need to do is find out which cm* font file contains the
>>Omega you want, and what the glyph index of Omega is.
> 
> 
> The simple way to do this is to write a TeX file like
> 
>     \documentclass{article}
>     \pagestyle{empty}
>     \begin{document}
>     $\Gamma \Delta \Theta \Lambda \Xi \Pi \Sigma \Upsilon \Phi \Psi \Omega$
>     \end{document}
> 
> run it through LaTeX and then do dvitype -output-level=2 foo.dvi,
> which reveals the font and the codes:
> 
>     114: fntdef1 7: cmr10---loaded at size 655360 DVI units
>     135: fntnum7
>     136: setchar0
>     137: setchar1
>     138: setchar2
>     139: setchar3
>     140: setchar4
>     141: setchar5
>     142: setchar6
>     143: setchar7
>     144: setchar8
>     145: setchar9
>     146: setchar10
> 
> So the upper-case non-slanted Greek letters occupy the first 11
> positions of cmr10.

Not exactly I think. Although I'm not at all familiar with font libs 
stuff & friends I found that the correct mappings aren't the 1st 10 
positions in cmr10 (assuming that <number> in a dict entry like

r'\Sigma'               : ('cmr10',   <number>)

is the position). Anyway, one has to take the
characters from cmr10, not cmmi10. Attached is the _mathtext_data.py 
that selects the non-slanted uppercase greek letters. I removed \Upsilon 
since it's an ordinary "Y" (just like e.g. "X" for \Chi).

cheers,
steve

-- 
Random number generation is the art of producing pure gibberish as 
quickly as possible.