Re: [NTG-context] Overriding the number on a float

24 Aug 2020


      Henning Hraban Ramm schrieb am 24.08.2020 um 19:37:
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Am 24.08.2020 um 17:36 schrieb Wolfgang Schuster :
Henning Hraban Ramm schrieb am 24.08.2020 um 15:29:
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Am 23.08.2020 um 11:25 schrieb Duncan Hothersall :
I think there was a question on this very recently but I don;t think it got an answer and I can't find it to reply to, so apologies for the extra noise. I have a large text with floats numbered sequentially by chapter and then figure/table number, but at the last minute I've had a request for two figures in a particular chapter to become 27.1a and 27.1b instead of 27.1 and 27.2. It's not a combination - they are separate figures on different pages.
I've experimented with the options I can see, but it's not obvious if there is a facility to override the numbering of two figures in a stream of normally numbered figures like this. I was thinking of the equivalent of the old \sym{symbol} command that used to work as a way to override a single item in an otherwise sequential list.
I guess there's a brute force method of setting up a new type of figure with the label "Figure 27.1" and having them numbered as lowercase alpha, but if there's an easier way that would be great.
I’m also interested in overriding automatical numbering, e.g. of chapters or itemization items.
E.g. in my songbook, I’d like to have the verses numbered but interrupted by a chorus numbered as "C" (i.e. "R" in German).
Similarly the paragraphs of some (by)laws that were changed a lot and use a numbering like 1, 2, 3, 3a, 4, 7...
Something like
\startitem[number={R}]
or
\startsection[number={3a}]
would be nice.
If I set it to an integer, ConTeXt should set the counter accordingly, otherwise continue counting from the previous calculated number. Would that be possible?
You can set your own section numbers but the counter isn't stopped.
Thank you! I overlooked "ownnumber". It works for sections, but not for items or floats.
\setnumber[section][10] doesn’t work, \setcounter the same (according to the source they’re synonymous) – does section use a different counter name or is it no counter at all?
\setnumber[figure][10] works (but only with integers, not some alphanumerical stuff, sorry Duncan).
\setupnumber is a synonym of \setupcounter and exists for backwards 
compatibility.
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Hraban
\useMPlibrary[dum]
\starttext
\startsection[title=One]
\startplacefigure[title=Test]
\externalfigure[dummy]
\stopplacefigure
\stopsection
\startsection[title=Two]
\startplacefigure[title=Test]
\externalfigure[dummy]
\stopplacefigure
\stopsection
\setcounter[figure][5] % next figure is no.6
\startsection[ownnumber=10,title=???] % ownnumber doesn’t work
\startplacefigure[title=Test,ownnumber=10]
\externalfigure[dummy]
\stopplacefigure
\stopsection
\setcounter[section][5] % doesn’t work
\setupheadnumber[section][5]
...
\startsection[title=Three]
\startitemize[n]
   \item one
   \item two
   \item three
   \startitem[ownnumber=9] five\stopitem  % ownnumber doesn’t work
\starttext
\startitemize
\txt{I.} \unknown
\sym{7.} \unknown
\stopitemize
\stoptext

Wolfgang