Re: [matplotlib-devel] doing tex support the right way

[Ryan K. <rya...@gm...>]

Thanks for doing this Darren.  Keep up the good work!

On 4/24/06, Darren Dale <dd...@co...> wrote:
> This weekend I took the first small step towards improving usetex and
> eliminating the need for PSFrag and dependencies like ghostscript. This i=
s
> necessary in order to provide usetex support accross backends (like pdf a=
nd
> svg). The basic approach is to extract the font layout information from t=
he
> dvi files. LaTeX could be the only dependency.
>
> Wikipedia has an article about the dvi specification:
> http://en.wikipedia.org/wiki/DVI_file_format, which has a link to a reall=
y
> useful file called dvitype.web. This file contains the full dvi specifica=
tion
> and can be converted into a plain tex file using weave:
> http://www.ctan.org/tex-archive/systems/knuth/texware/dvitype.web
>
> dvitype.web also contains a well documented pascal program illustrating h=
ow to
> read dvi files correctly and convert them into symbolic form. It was mean=
t as
> a guide to programmers developing dvi-related software. It includes a sec=
tion
> on extracting the necessary information from tfm files, and other issues
> related to fonts.
>
> I also discovered that xdvi is OSS compliant, and have started studying t=
hat
> source code as well. I only started writing code to read the dvi informat=
ion,
> but I post here to allow people to comment if they are so inclined, and t=
o
> share the dvitype example with anyone who is interested. I have compiled =
the
> tex file, converted it to pdf, and posted the result at
> http://staff.chess.cornell.edu/~dale/matplotlib/dvitype.pdf.
>
> Darren
>
>
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