Benjamin Buchmuller schrieb am 07.05.2020 um 19:41:
Hi Wolfang,

Thank you for your reply. I have indeed not explained my intended result very 


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


Is there something missing in here because the \ifsecondargument check here makes non sense because the second argument is mandatory and not optional.

Is this what you want?


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 …

You can align number on the decimal point (comma) but this works only when you have only one number in a cell.


            \digits {14.0} ± \digits {1.5}
            \digits {0.034} ± \digits {0.013}


2. + 3.

Absolutely right, this is my bad. I have badly mixed from Hans’ solution to a 
similar problem,

which was actually \def\zeroamount{-} and the example in the source, I didn’t 
read properly. Just skip that part. :)

The message is from 2003!



\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 .

Can you write another mail with a request for this.

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