Cheer up your LaTeX with SMILES support II

In Part I, I showed how to embed PNGs, automatically generated from SMILES by obabel, into LaTeX documents. An alternative approach is to use the SVG output from obabel.

In a comment to my earlier post, Billy suggests running the SVG through Inkscape or rsvg-convert:

You can also embed the material as a vector graphic, of course. Inkscape doesn't seem to support pipes, and rsvg-convert gives ugly output, but I'm sure there's other options.

\immediate\write18{obabel -:'#1' -osvg -p | rsvg-convert -f pdf -o smilesimg\arabic{smilescounter}.pdf}

\immediate\write18{obabel -:'#1' -O smilesimg\arabic{smilescounter}.svg -p ; inkscape -f smilesimg\arabic{smilescounter}.svg -A smilesimg\arabic{smilescounter}.pdf}

Also, if you don't want to call these applications when the graphic files aren't out of date, then use the code snippet found at the top of the 3rd page from this article.

I found a third approach on the interwebs soon after writing the initial post. It's by Jakob Lykke Andersen who converts the SVG to PDF with ImageMagick's convert. If you download the file graphviz.tex from his website, you can just include it and use it as in the following example:
The resulting PDF looks better than the original (though it could be because I didn't handle the PNGs properly in the first PDF). A nice little touch in Jakob's version is that an error box appears in the PDF if there is a problem generating the image.

Exercise for the reader:
A bit more polish is needed before these methods can be used wholesale by others. If you know a bit about LaTeX, have a go at an obabel package for CTAN.