[NTG-context] picture before \chapter breaking \header \footer setup

[Taco Hoekwater]

Jelle Huisman wrote:
> 
> Is it possible to make this work? (maybe an extra \chapter command 
> before the combination that triggers the header-footer setup, but that 
> is not printed after all?)

I would put the externalfigure in the before= of the chapter head,
maybe wrapped in some form of \doifelse.

Best wishes,
Taco