Fabrice Couvreur schrieb am 23.09.2019 um 23:31:

Hi Wolfgang, As I understand it, the following instructions have no effect on the figures

defaultfont := "texgyrepagella-regular*default" ; defaultscale :=0.8 ;

You change the font because you typeset your labels in math mode. label.llft(btex \m{O} etex,origin) ; Wolfgang