[NTG-context] externalizing TikZ graphics

Henning Hraban Ramm texml at fiee.net
Mon Jan 25 16:42:29 CET 2021


Hi,

did anyone succeed in externalizing TikZ graphics with ConTeXt?

It’s about a project with hundreds of diagrams that (in the current state) clutter the main directory with cryptically-named PDFs (at least sorted by component name) and that on each ConTeXt run take a lot of runtime (I guess also the many log lines slow the process).

In 2013, Aditya said it wasn’t possible to externalize pgf/TikZ graphics as documented in the pgf manual, and "perhaps" it would make sense to use his filter module:

https://mailman.ntg.nl/pipermail/ntg-context/2013/071162.html

Did anyone try to do that? I didn’t find anything in this list’s archives.

The original pgf way is two-pass, and you’d need to call LaTeX with the intended graphics name as --jobname; that’s far too much of a hassle for that many graphics.

I generally like how the filter module works, as you can also define the name of every buffer, but my only experience with that is my LilyPond setup.

If nobody has better advice, I’ll try to come up with a filter setup. That would mean we’d avoid the tikz module, every TikZ diagram will get written to a buffer of configurable name, and that (with preamble setup) will get run through LaTeX. I read pgf had some restrictions in plain TeX mode, but perhaps we can also use LuaTeX in plain mode to avoid the LaTeX dependency.

Best, Hraban


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