Hi Wolfang, Thank you for your reply. I have indeed not explained my intended result very clearly.
1. Primarily, I need to get the two values aligned at the digit separator of the first and second number respectively and overall at the ± sign. I’m working in an xtable, where I have entries such as \startxcell \mpm{14.0==}{_1.5==} \stopxcell \startxcell \mpm{_0.034}{_0.013} \stopxcell and defined \def\mpm#1#2{ \ifsecondargument \digits{#1}\,±\,\digits{#2}% \else \digits{#1}% \fi } Since I was hoping that I could exploit the zeropadding of \digits to get the format right. Indeed, it would save a lot of typing, if I wouldn’t have to specify the padding manually and I vaguely recall that there is somewhere a ConTeXt solution that can make such alignments, but I simply can’t find it any more … 2. + 3. Absolutely right, this is my bad. I have badly mixed from Hans’ solution to a similar problem, https://www.mail-archive.com/ntg-context@ntg.nl/msg00724.html which was actually \def\zeroamount{-} and the example in the source, I didn’t read properly. Just skip that part. :) 4. Indeed, \startxcell \mpm{14.==}{_1.5=} \stopxcell \startxcell \mpm{_0.03}{_0.01} \stopxcell aligns properly. But sometimes, I have the first digit specified, but not the second and unfortunately this doesn’t work \startxcell \mpm{14.5=}{_1.5=} \stopxcell \startxcell \mpm{_0.03}{_0.01} \stopxcell because = is not immediately preceded by . > On 7 May 2020, at 18:21, Wolfgang Schuster > <wolfgang.schuster.li...@gmail.com> wrote: > > Benjamin Buchmuller schrieb am 07.05.2020 um 17:31: >> Hi, >> I’m trying to get >> \digits{15.0=}±\digits{1.00} >> \digits{_8.12}±\digits{0.34} >> horizontally aligned as >> 15.0 ±1.00 >> 8.12±0.34 >> But I get >> 15.0±1.00 >> 8.12±0.34 >> instead. >> From the source (phys-dim.mkiv), I can see that “=“ should expand to >> \hphantom{0}. (I think \zeropoint in the table is outdated, since >> \def\zeropoint\hphantom{0} does not solve the problem either.) > > 1. Which table? > > 2. This is not how \def works. > > 3. When you redefine \zeropoint (which isn't a macro) you're going to break > everything. > >> I can’t use tabulate or alignment in math mode for this problem >> unfortunately. > > I looked at the code and the problem is = can only be used to insert space > for two digits (e.g. 100.==). > > Wolfgang ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________