Aaligned numbers in a matrix?

Aaligned numbers in a matrix?

[Bruce Horrocks via ntg-context]

I'm using the following MWE to produce a matrix:

\definemathmatrix[bmatrix]
  [matrix:brackets]
  [simplecommand=bmatrix]
\starttext
$ a \rightarrow
  \bmatrix{1, 2, 3, 4; 
           2, 1, 4, 3;
           3,-4, 1,-2;
           4,-3, 2,-1} $
\stoptext

The columns with negative numbers in are centred and I would rather have them right-aligned so that the digits stack up above each other and the negative signs stick out to the left, so to speak. Is there an easy way to achieve this?

—
Bruce Horrocks
Hampshire, UK

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Re: Aaligned numbers in a matrix?

[fv leung via ntg-context]

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See if this way suits you.
\definemathmatrix[bmatrix]
  [matrix:brackets]
  [simplecommand=bmatrix]
\starttext
$ a \rightarrow
  \bmatrix{1, \hfill 2, 3, \hfill 4;
           2, \hfill 1, 4, \hfill 3;
           3,-4, 1,-2;
           4,-3, 2,-1} $
\stoptext

Bruce Horrocks via ntg-context <ntg-context@ntg.nl> 於 2023年2月27日 週一
上午8:56寫道：

> I'm using the following MWE to produce a matrix:
>
> \definemathmatrix[bmatrix]
>   [matrix:brackets]
>   [simplecommand=bmatrix]
> \starttext
> $ a \rightarrow
>   \bmatrix{1, 2, 3, 4;
>            2, 1, 4, 3;
>            3,-4, 1,-2;
>            4,-3, 2,-1} $
> \stoptext
>
> The columns with negative numbers in are centred and I would rather have
> them right-aligned so that the digits stack up above each other and the
> negative signs stick out to the left, so to speak. Is there an easy way to
> achieve this?
>
> —
> Bruce Horrocks
> Hampshire, UK
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> https://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : https://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : https://contextgarden.net
>
> ___________________________________________________________________________________
>

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___________________________________________________________________________________

Re: Aaligned numbers in a matrix?

[Aditya Mahajan via ntg-context]

On Mon, 27 Feb 2023, Bruce Horrocks via ntg-context wrote:

> I'm using the following MWE to produce a matrix:
> 
> \definemathmatrix[bmatrix]
>   [matrix:brackets]
>   [simplecommand=bmatrix]
> \starttext
> $ a \rightarrow
>   \bmatrix{1, 2, 3, 4; 
>            2, 1, 4, 3;
>            3,-4, 1,-2;
>            4,-3, 2,-1} $
> \stoptext
> 
> The columns with negative numbers in are centred and I would rather have them right-aligned so that the digits stack up above each other and the negative signs stick out to the left, so to speak. Is there an easy way to achieve this?

You can right align all columns, though I am not sure that this looks better, because column 2 and 3 now appear to be "too close".

\definemathmatrix[bmatrix]
  [matrix:brackets]
  [align=all:right,simplecommand=bmatrix]
\starttext
$ a \rightarrow
  \bmatrix{1, 2, 3, 4;
           2, 1, 4, 3;
           3,-4, 1,-2;
           4,-3, 2,-1} $
\stoptext

Aditya
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