Re: AW: [Matplotlib-users] French characters

[John H. <jdh...@ac...>]

>>>>> "Matt" == Matt Newville <new...@ca...> writes:

    Matt> Sorry for the confusion, that's not what I meant.  I think
    Matt> that the acute sign would have to be added to the list of
    Matt> symbols that mathtext can handle.  That would probably mean
    Matt> both special code in mathtext.py and an entry in
    Matt> _mathtext_data.py. I'm not sure what the right entry in the
    Matt> font table would be, as I don't understand the entries in
    Matt> the latex_to_bakoma dictionary in _mathtext_data.py at all.

I just added support for accents in general to mathtext.  The
following accents are provided: \hat, \breve, \grave, \bar, \acute,
\tilde, \vec, \dot, \ddot.  All of them have the same syntax, eg to
make an overbar you do \bar{o} or to make an o umlaut you do \ddot{o}.

The changes are in CVS - make sure you get mathtext.py revision 1.9 or
later, and _mathtext_data.py revision 1.5 or later.

Here is the test script I used:

    from pylab import *
    plot(range(10))
    title(r'$\ddot{o}\acute{e}\grave{e}\hat{O}\breve{i}\bar{A}\tilde{n}\vec{q}\dot{x}$', fontsize=20)
    show()

Hope this helps!
JDH

PS:

Matt, the _mathtext_data dictionary latex_to_bakoma maps the TeX
symbol to a fontfilename, glyph index tuple.  To get the character
code in the font file corresponding to the glyph index, you can use
the FT2Font charmap dict

Here's a little demo script which shows you how to use the dict to
load a freetype2 glyph struct for a latex symbol "delta" from the
appropriate cm*.ttf file

    import os
    from matplotlib import get_data_path
    from matplotlib.ft2font import FT2Font
    from matplotlib._mathtext_data import latex_to_bakoma


    name, glyphind = latex_to_bakoma[r'\delta']
    fname = os.path.join(get_data_path(), name + '.ttf')

    font = FT2Font(fname)
    charmap = font.get_charmap()
    ccode = charmap[glyphind]
    glyph = font.load_char(ccode)

    print glyph.width/64.