Thanks again Wolfgang, with this setup everything is fine.
But I wanted to bring to the attention of Hans the inconsistency of the prefix conversions by defaut, so that he can correct them:
I A chapter
[a figure] Figure I.1 % <-- Here the conversion of the prefix to Romannumerals is done AUTOMATICALLY.
1.1 A section
[a figure] Figure 1.2 % <-- Here the conversion of the prefix to Romannumerals is NOT done AUTOMATICALLY (the presence of a section before seems to DISCARD THE AUTOMATIC CONVERSION). Nor in the prefix of the section.
Code:
\setuphead[chapter][conversion=Romannumerals]
\starttext
\chapter{A chapter}
\placefigure{}{\externalfigure}
\section{A section}
\placefigure{}{\externalfigure}
\stoptext
Every prefix should be AUTOMATICALLY converted, not half of them. Hans, could you please correct that in the next betas?
Best regards.