Dear Mikael,
thanks a lot!
this seems to be the solution! And it looks beatiful enough to me 😄
I'll try to port all my layers to this new method and see if I run into new problems again 😅

Emanuel

On Feb. 15 2024, at 8:19 am, Mikael Sundqvist <mickep@gmail.com> wrote:
> Hi
>
> On Thu, Feb 15, 2024 at 1:03 AM Emanuel Han via ntg-context
> <ntg-context@ntg.nl> wrote:
> >
> > Dear list,
> >
> > the attached .tex file is the minimal working example we discussed today in the online meeting.
> >
> > I realized that the approach of looping through k of p[k] is not fitting my needs, because it's not flexible enough.
> >
> > I need another approach, one which works with layer sets.
> >
> > I would stop using p as an array, because with the layer sets approach we don't have a fixed order of the layers.
> >
> > So the definition of the layers would be something like
> >
> > picture layerA;
> > layerA:=image(
> > label("Word 1", z1);
> > );
> >
> > picture layerW;
> > layerW:=image(
> > label("Mot 2", z2);
> > );
> >
> > picture layerM;
> > layerM:=image(
> > label("Parola 3", z3);
> > );
> >
> > picture layerC;
> > layerC:=image(
> > label("Wort 4", z3+z1);
> > );
> >
> > picture layerY;
> > layerY:=image(
> > label("Nummer 5", z2+z3);
> > );
> >
> > picture layerU;
> > layerU:=image(
> > label("number 6", z2+z1);
> > );
> >
> > After that, I would define layer sets and layer subsets. This will be done manually for each layer set and each layer subset.
> > I don't know the proper syntax to do that. Let's assume we could use a variable type called "myset".
> >
> > myset layersubsetGamma;
> > layersubsetGamma:={layerU,layerM};
> >
> > In my logic, the layers will be drawn in the order of their appearance within the {}. In the example, drawn content of layerM might cover drawn content of layerU.
> >
> > Contrary to a layer subset, each layer set will result in a PDF page, and thus the layer sets are related to each other by an inner order. That's why I would use an array variable here with [].
> >
> > I don't know how to append a set. In the following example, I assumed there would be a function myappend(<initial set>, <the things what the initial set should be appended with>)
> >
> > myset layerset[];
> > layerset1 := {layerW,layerA};
> > layerset2 := myappend{layerset1, layerY};
> > layerset3 := myappend{layerset2, layersubsetGamma};
> > layerset4 := myappend{layerset2, layerU};
> > layerset5 := myappend{layerset4, layersubsetGamma};
> >
> > Finally, I would need each layerset[k] typeset on its own pdf page. And of course on each page k, only the layers which appear in the definition of the layerset[k] should be drawn on top of each other in the order as they appear in that definition.
> >
> > I'm very curious to hear your suggestions.
> >
>
> Not beautiful, perhaps, but maybe something like this could work? I
> think there is no way out of doing some manual work to tell what you
> want included on each page.
>
> \startuseMPgraphic{base}
> z1 = origin ;
> z2 = (10,50) ;
> z3 = (40,30) ;
>
> picture layerA;
> layerA:=image(
> label("Word 1", z1);
> );
>
> picture layerW;
> layerW:=image(
> label("Mot 2", z2);
> );
>
> picture layerM;
> layerM:=image(
> label("Parola 3", z3);
> );
>
> picture layerC;
> layerC:=image(
> label("Wort 4", z3+z1);
> );
>
> picture layerY;
> layerY:=image(
> label("Nummer 5", z2+z3);
> );
>
> picture layerU;
> layerU:=image(
> label("number 6", z2+z1);
> );
> \stopuseMPgraphic
>
> \startuseMPgraphic{Gamma}
> draw layerU ;
> draw layerM ;
> \stopuseMPgraphic
>
> \startuseMPgraphic{layerset1}
> \includeMPgraphic{base}
> draw layerW ;
> draw layerA ;
> \stopuseMPgraphic
>
> \startuseMPgraphic{layerset2}
> \includeMPgraphic{layerset1} ;
> draw layerY ;
> \stopuseMPgraphic
>
> \startuseMPgraphic{layerset3}
> \includeMPgraphic{layerset2} ;
> \includeMPgraphic{Gamma} ;
> \stopuseMPgraphic
>
>
> \startuseMPgraphic{layerset4}
> \includeMPgraphic{layerset2} ;
> draw layerU ;
> \stopuseMPgraphic
>
> \startuseMPgraphic{layerset5}
> \includeMPgraphic{layerset4} ;
> \includeMPgraphic{Gamma} ;
> \stopuseMPgraphic
>
> \starttext
> \startTEXpage[offset=1DK]
> \useMPgraphic{layerset1}
> \stopTEXpage
>
> \startTEXpage[offset=1DK]
> \useMPgraphic{layerset2}
> \stopTEXpage
>
> \startTEXpage[offset=1DK]
> \useMPgraphic{layerset3}
> \stopTEXpage
>
> \startTEXpage[offset=1DK]
> \useMPgraphic{layerset4}
> \stopTEXpage
>
> \startTEXpage[offset=1DK]
> \useMPgraphic{layerset5}
> \stopTEXpage
>
> \stoptext
> /Mikael
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive : https://github.com/contextgarden/context
> wiki : https://wiki.contextgarden.net
> ___________________________________________________________________________________
>