[Therion] Altitude metapost error -2

[bruce at tomo.co.nz]

Thanks Martin

That (therion/therion at d6d9a18 <https://github.com/therion/therion/commit/d6d9a18fe0dcdfd47fdef42cd16cd9ed878a2bad> ) solves the Sau’s colour map-fg altitude problem for me, presumably for Sau as well.

 

Recall my post of 20 April 2026 “[Therion] th_formdef.tex runaway text error”, where I described scenarios that triggered “pdftex exit code – 1”.

colour map-fg [triplet]

colour map-fg scrap

colour map-fg map

all seemed to trigger the error for large enough outputs, but 

colour map-fg [integer] and 

colour map-fg altitude

are less error prone but still error for a long enough passage.

 

Although my problem only manifests in a single Therion dataset, is it possible that there could be a similar root cause (and solution)?

 

Bruce

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