Re: Math alignment

[Hans Aberg <haberg-1@telia.com>]

> On 7 Jul 2015, at 20:17, Wolfgang Schuster <schuster.wolfgang@gmail.com> wrote:

> You can set the alignment for each column in a matrix with the align key.
> 
> \definemathmatrix
>   [aligned]
>   [n=2,
>    align={right,left},
>    distance=\spaceamount]
> 
> \starttext
> 
> \startformula
>     J^j:
>     \startaligned[left=\left\{,right=\right.]
>         \NC ω^0 \NC ↦ 0 \NR
>         \NC ω^j \NC ↦ 0 \NR
>     \stopaligned
>     \quad
>     \startaligned[n=3,align={right,middle,left},left=\left\{,right=\right.]
>         \NC ω^k \NC ↦ \NC  ω^l \NR
>         \NC ω^l \NC ↦ \NC -ω^k \NR
>     \stopaligned
> \stopformula
> 
> \stoptext

That looks like the right thing. Thanks.

Your example is quite close to TeX, cf. example below.

I have also put in an extra alignment to see what happens, monospace code alignment style. Changing ‘left’ to ‘right did not seem to have any effect here.

----
\definemathmatrix
  [aligned]
  [n=2,
   align={right,left},
   distance=\spaceamount]

\starttext

\startformula
  J^j:
  \startaligned[left=\left\{,right=\right.]
    \NC ω^0 \NC ↦ 0 \NR
    \NC ω^j \NC ↦ 0 \NR
  \stopaligned
  \quad
  \startaligned[n=3,align={right,middle,left},left=\left\{,right=\right.]
    \NC ω^k \NC ↦ \NC  \NC ω^l \NR
    \NC ω^l \NC ↦ \NC -\NC ω^k \NR
  \stopaligned
\stopformula


\def\equlb#1{\left\{\eqalign{#1}\right.} %equation left braced

\startformula
 J^j:\equlb{ω^0 &↦ 0 \cr ω^j &↦ 0} \quad
 \equlb{ω^k &↦ ω^l \cr ω^l &↦ -ω^k} \stopformula

\stoptext
----

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