[NTG-context] Math alignment
schuster.wolfgang at gmail.com
Tue Jul 7 20:17:50 CEST 2015
> Hans Aberg <mailto:haberg-1 at telia.com>
> 7. Juli 2015 18:23
>> On 7 Jul 2015, at 16:47, Wolfgang Schuster<schuster.wolfgang at gmail.com> wrote:
>>> I get errors when using \MC - see example below.
>> The \NR before \stopmathcases is missing in all your examples.
> OK. Though I know it, it is hard to get used to, coming from LaTeX.
>>> But the spacing is wrong: too much between the two components. These are not cases, but aligned formulas: one might have a number of alignments, not just one. And I just happen to use left braces on them.
>> Take a look at my previous example where I changed the distance between both columns with the distance key.
> I missed that. It fixes the spaces within the formula, but adds space between the two sets relative both TeX and AMS-LaTeX (which has about the same as TeX), cf. example below.
> In AMS-LaTeX one can have more than one alignment, though when trying it between the “-“ and the “ω” in the second (right-most) set, it adds a lot of space, rather than just trying to align a compactly as possible. In ConTeXt, nothing happens with extra alignments; in TeX, there is an error.
> So using \startmathcases is a workaround: trying to force it to do something it wasn’t intended for.
You can set the alignment for each column in a matrix with the align key.
\NC ω^0 \NC ↦ 0 \NR
\NC ω^j \NC ↦ 0 \NR
\NC ω^k \NC ↦ \NC ω^l \NR
\NC ω^l \NC ↦ \NC -ω^k \NR
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