Hallo!
> > \setuppapersize[a4][a4]
> > \setupfloat[figure][none,fit,here,always,top,bottom,force,page]
> > \setupcaption[figure][number=no]
> > \setuplayout[grid=yes]% Problem doesn't exist with grid=no
> > \starttext
> > \input tufte
> > \placefigure{}{\framed[offset=none]{%
> >
> \externalfigure[float.png][width=\makeupwidth,height=\textheight]}}
> >
> > \dorecurse{10}{\par\input tufte}
> > \stoptext
> >
> --------------------------------------------------------------------
> Maybe I am missing something here. But \placefigure[page].... seems
> to work fine for me. Even larger dimensions do not seem to be a
> problem.
>
> \input tufte
>
> \placefigure[page,none]{}{\blackrule[width=\textwidth,height=0.9\tex
> theight,color=green]}
> \input tufte
> \placefigure[page,none]{}{\blackrule[width=\textwidth,height=1.0\tex
> theight,color=green]}
> \input tufte
> \placefigure[page,none]{}{\blackrule[width=\textwidth,height=1.1\tex
> theight,color=green]}
> \dorecurse{10}{\input tufte}
You are right! Your example works!
The difference to the example that I have posted is, that you gave
the options [page,none] explicitly with \placefigure and I have used
\setupfloat[figure][page,none].
So, what is wrong with using \setupfloat?
Please try my example exactly as given and you will see what I mean.
Wolfgang