[NTG-context] checking whether file is landscape or portrait

Pablo Rodriguez oinos at gmx.es
Tue Jan 28 16:51:35 CET 2020

Dear list,

I have to check whether an external PDF document is portrait or
landscape (in order to manipulate it in different ways).

From what I understand of grph-inc.mkiv, I came with the following sample:


    \ifnum\figureXSize<\figureYSize portrait\else landscape\fi

I feel bad of abusing the ConTeXt source in such a miserable way. But
I’m afraid this is the best I can.

Is there no standard way to check portrait or landscape on a given
figure? A conditional for that would be useful.

At least, I would like to know how to get image dimension numbers
suitable to be deployed with \ifnum.

Many thanks for your help,


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