[NTG-context] Updated My Way on math alignment

[Aditya Mahajan]

Hi Wim,

On Fri, 4 Aug 2006, WN wrote:

> I have a question about \startcases .. \stopcases.
> I am trying to adjust the distance of the cases and the right brace, the
> left brace is empty,
> see example below. Is this possible ?

It is. You can do it in different ways, depending on what you like.

> % Example
> \starttext
> \startformula
> *\startcases[left={\left.},right={\right\}}]*
> \NC (\lambda + \mu ) \cdot a = \lambda \cdot a + \mu \cdot a \NC \NR
> \NC \lambda ( a + b ) = \lambda \cdot a + \lambda \cdot b  \NC \NR
> \stopcases
> \text{(distributieve eigenschappen)}
> \stopformula
> \stoptext


  \starttext

The original one.

  \startformula
  \startcases[left={\left.},right={\right\}}]
  \NC (\lambda + \mu ) \cdot a = \lambda \cdot a + \mu \cdot a \NC \NR
  \NC \lambda ( a + b ) = \lambda \cdot a + \lambda \cdot b  \NC \NR
  \stopcases
  \text{(distributieve eigenschappen)}
  \stopformula

You can reduce the \quotation{width} of the cases,

\startformula
\startcases[left={\left.},right={\right\}},numberdistance=0pt]
  \NC (\lambda + \mu ) \cdot a = \lambda \cdot a + \mu \cdot a \NC \NR
  \NC \lambda ( a + b ) = \lambda \cdot a + \lambda \cdot b  \NC \NR
  \stopcases
  \text{(distributieve eigenschappen)}
  \stopformula

or use a matrix (only one column)

\startformula
   \startmatrix[left={\left.},right={\right\}}]
     \NC (\lambda + \mu ) \cdot a = \lambda \cdot a + \mu \cdot a \NR
     \NC \lambda ( a + b ) = \lambda \cdot a + \lambda \cdot b    \NR
  \stopmatrix
  \text{(distributieve eigenschappen)}
  \stopformula

maybe a right aligned one

\startformula
   \startmatrix[left={\left.},right={\right\}},align=right]
     \NC (\lambda + \mu ) \cdot a = \lambda \cdot a + \mu \cdot a \NR
     \NC \lambda ( a + b ) = \lambda \cdot a + \lambda \cdot b    \NR
  \stopmatrix
  \text{(distributieve eigenschappen)}
  \stopformula

  and this is how I would do it

\definemathmatrix[aligned][n=2,align={right,left},distance=0pt]

\startformula
   \startaligned[left={\left.},right={\right\}}]
     \NC (\lambda + \mu ) \cdot a \NC{} = \lambda \cdot a + \mu \cdot a 
\NR
     \NC \lambda ( a + b ) \NC {}= \lambda \cdot a + \lambda \cdot b 
\NR
\stopaligned
  \text{(distributieve eigenschappen)}
  \stopformula

Aditya