[NTG-context] Typeset multiple pictures not in a strict matrix (\startfloatcombination)

[Hans Hagen]

On 3/7/2023 6:54 PM, Gerion Entrup via ntg-context wrote:
> Hi,
> 
> I'm trying to typeset several pictures as a floatcombination but not in
> the form of strict cells of a matrix.
> 
> Here is some ASCII art to demonstrate the positions of the pictures:
> 
>    ---------------------------
>    |                         |
>    |                         |
>    ---------------------------
>          a) Some caption
> 
>    ------------  -------------
>    |          |  |           |
>    |          |  |           |
>    |          |  |           |
>    ------------  -------------
>       b) foo        c) foo
> 
>       Figure 1.1: Foo Bar
> 
> 
> I tried to typeset it with this code (based on https://tex.stackexchange.com/a/502903):
> 
> \useMPlibrary[dum]
> \setupcombinations[alternative=text]
> 
> \definefloat[subfigure][local=yes]
> \setupcaption[subfigure][numberconversion=a]
> \setuplabeltext[subfigure=]
> 
> \appendvalue{stopplacefigure}{\resetcounter[subfigure]}
> 
> \starttext
> \startplacefigure[title=Test]
>      \startfloatcombination[nx=1, ny=2]
>        \startplacesubfigure[title=Test]
>          \externalfigure[dummy][width=4cm,height=1cm]
>        \stopplacesubfigure
>        \startfloatcombination[nx=2, ny=1]
>          \startplacesubfigure[title=Test]
>            \externalfigure[dummy][width=4cm,height=1cm]
>          \stopplacesubfigure
>          \startplacesubfigure[title=Test]
>            \externalfigure[dummy][width=4cm,height=1cm]
>          \stopplacesubfigure
>        \stopfloatcombination
>      \stopfloatcombination
> \stopplacefigure
> \stoptext
> 
> However, this does not work (the pictures are all in one row).
> Do you have some advice?
you can cheat:

\startplacefigure[title=Test]
     \bTABLE[frame=off]
         \bTR
             \bTD[nx=2,align=middle,offset=overlay]
 
\dontleavehmode\externalfigure[dummy-1][width=4cm,height=1cm]
             \eTD
         \eTR
         \bTR[toffset=1ex]
             \bTD[nx=2,align=middle]
%                 \placefloatcaption[figure][title=foo]
                 a) foo
             \eTD
         \eTR
         \bTR[toffset=2ex]
             \bTD[align=middle,offset=overlay]
                 \externalfigure[dummy-2][width=4cm,height=1cm]
             \eTD
             \bTD[align=middle,offset=overlay]
                 \externalfigure[dummy-3][width=4cm,height=1cm]
             \eTD
         \eTR
         \bTR[toffset=1ex]
             \bTD[align=middle]
%                 \placefloatcaption[figure][title=foo]
                 b) foo
             \eTD
             \bTD[align=middle]
%                 \placefloatcaption[figure][title=foo]
                 c) foo
             \eTD
         \eTR
     \eTABLE
\stopplacefigure


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