[texhax] Extract equations as EPS from larger doc?

Steve Schwartz s.schwartz at imperial.ac.uk
Thu Jun 11 18:58:10 CEST 2009

I had some reason to look into similar things some years back. My own
notes provide the following summary of what I found, though I'll confess
that I forget exactly how any of them work. Most are geared toward
bitmap output, but perhaps not all.



PS As an alternative for something with vector capabilities, I think I'd
be inclined to put the equations on separate plain (pagestyle{empty})
pages, use pdflatex to generate a pdf, then run the result through
pdfcrop to trim all the white space. Finally something from the
pdftoolkit pdftk will split the resulting multi-page pdf into separate
pages, meaning separate pdf's for each equation.

There are a variety of things that will take in latex and spit out
images (gifs or pngs) that I've discovered. They include:

latex2png (part of latex2rtf)
gladtex (which includes a commandline eqn2gif or somesuch)

On Thu, 2009-06-11 at 04:09 +0100, Philipp K. Janert wrote:
> For a (non-LaTeX) publishing project I will have to 
> provide equations as images.
> I would like to use LaTeX to set the equations and
> to generate the image files (as EPS).
> The main problem is the document management -
> it would be nice to be able to have a single LaTeX
> document, and ideally a clever tool that extracts
> equations as individual EPS files.
> Since this seems like a recurring problem, I wonder
> whether somebody knows of a LaTeX macro package
> or other tool that facilitiates this process. I looked on 
> CTAN, but did not find anything that seemed suitable.
> (I can do this manually, by placing each equation
> on a separate page and then operating with ps2eps,
> but I was wondering whether this problem has already
> been solved in a more general/convenient way.)
> Any suggestions?
> Best,
> 		Ph.
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Professor Steven J Schwartz        Phone: +44-(0)20-7594-7660
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