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
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
}
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?
\define[2]\mpm
{\digits{#1}%
\doifsomething{#2}{\,±\,\digits{#2}}}
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.
\starttext
\startxtable[aligncharacter=yes,alignmentcharacter=±]
\startxrow
\startxcell
\digits {14.0} ± \digits {1.5}
\stopxcell
\stopxrow
\startxrow
\startxcell
\digits {0.034} ± \digits {0.013}
\stopxcell
\stopxrow
\stopxtable
\stoptext
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. :)
The message is from 2003!
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 .
Can you write another mail with a request for this.
Wolfgang
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