Re: [matplotlib-devel] dviread: usetex for the PDF backend

[Darren D. <dd...@co...>]

Hi Jouni,

On Thursday 13 September 2007 02:38:25 am Jouni K. Sepp=E4nen wrote:
> The usetex support in pdf is now a little better, so I am enabling it
> now. At least it is more entertaining than NotImplementedError...
>
> I have fixed some of the biggest problems (the broken font embedding
> causing crashes of Preview.app, and the lack of virtual font support).
> It still makes some assumptions about the TeX distribution: you need
> kpsewhich and pdftex.map, so on TeX Live or (I presume) teTeX you are
> fine, but I have no idea about Windows.
>
> Transformations of Type-1 fonts are not implemented, so if you try to
> use $\alpha$ with Times, TeX typesets an alpha from Symbol and slants
> it, but you get the non-slanted version. Fixing this (and adding
> subsetting support) probably requires a complete Type-1 parser.
>
> There is support for baseline alignment, but it is based on finding the
> baseline of the lowest character, so subscripts will throw it off. A
> good solution will require some TeX magic.
>
> Reports of bugs (or successes) are welcome.

I tried the following, with the latest svn checkout and usetex=3DTrue:

plot([1,2])
savefig('test.pdf')

and I get an error, the tail end is:

/usr/lib64/python2.5/site-packages/matplotlib/backends/backend_pdf.py in=20
writeFonts(self)
    468             elif filename.endswith('.pfb') or=20
filename.endswith('.pfa'):
    469                 # a Type 1 font; limited support for now
=2D-> 470                 fontdictObject =3D self.embedType1(filename,=20
self.fontInfo[Fx])
    471             else:
    472                 realpath, stat_key =3D get_realpath_and_stat(filena=
me)

/usr/lib64/python2.5/site-packages/matplotlib/backends/backend_pdf.py in=20
embedType1(self, filename, fontinfo)
    501             fh.close()
    502
=2D-> 503         fh =3D open(fontinfo.afmfile, 'rb')
    504         matplotlib.verbose.report(
    505             'Reading metrics from ' + fontinfo.afmfile, 'debug')

IOError: [Errno 2] No such file or directory: ''


Darren