Not hard, I don't think. The following will give you a FT2Image object of the expression:
from matplotlib.mathtext import MathTextParser mathtext_parser = MathTextParser("Bitmap") ftimage = mathtext_parser.parse(r"$x^i$", 150) From the FT2Image, you can get an rgba buffer, and the width and the height. Here's where it gets (a little) tricky --> We have code to save RendererAgg buffers, and Image buffers, but nothing to take a pointer to raw C rgba buffer and width and height. We could a) depend on Gtk or Wx to save the mathtext PNG (which can do this now, see mathtext_wx.py), or b) create a new png-writing C-extension which would take a raw buffer, width, height and a filename/file object. Then, we could remove some code duplication by making _backend_agg.cpp and _image.cpp use that. I won't have time to get to this immediately. Hopefully that's enough of a roadmap for someone else to take it. Cheers, Mike John Hunter wrote: > We are currently using latex dvipng pngs in our html docs to avoid the > mathml browser limitations. I don't have latex on my OSX box, which > is no really a big problem since I have ssh access to a fully > configured linux box, but it would be really cool to drop this > dependency and use mathtext instead. Truth in advertising after all > -- eg in the mathtext chapter I'd much rather show them *our* > equations than latex's, even though they are damn close. > > Michael - -how hard would it be to generate small PNGs of mpl rendered > equations rather than use latex/dvipng here? > > JDH > > ------------------------------------------------------------------------- > Check out the new SourceForge.net Marketplace. > It's the best place to buy or sell services for > just about anything Open Source. > http://sourceforge.net/services/buy/index.php > _______________________________________________ > Matplotlib-devel mailing list > Matplotlib-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-devel > -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel