[NTG-context] Labelling with textext

2010-02-13 Thread Troy Henderson 
I'm trying to typeset a numerical label (in math mode) and have space
for a - sign (but not actually typeset the -) after the number in the
case where the number itself is negative.  I am trying this

label.bot(textext($  decimal(x)  \hphantom{-}$),(x*u,ay*u));

which fails.  If I remove the \hphantom command, i.e.,

label.bot(textext($  decimal(x)  $),(x*u,ay*u));

the command is successful, but the number being labeled is not exactly
horizontally centered below the point in question since the - symbol
preceding the number pushes it a little to the right.  Thoughts on how
to achieve my desired \hphantom effect?

Thanks,

-- 
Troy Henderson
Assistant Professor
Department of Mathematics
University of Mobile
http://www.tlhiv.org
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Re: [NTG-context] Labelling with textext

2010-02-13 Thread Aditya Mahajan 

On Sat, 13 Feb 2010, Troy Henderson wrote:


I'm trying to typeset a numerical label (in math mode) and have space
for a - sign (but not actually typeset the -) after the number in the
case where the number itself is negative.  I am trying this

label.bot(textext($  decimal(x)  \hphantom{-}$),(x*u,ay*u));

which fails.


Can you provide more details? A minimal example works without errors in 
MkII and MkIV.


\starttext
\startMPcode
  x := 1 ; ay := 1 ; u := 1 ;
  label.bot(textext($  decimal(x)  \hphantom{-}$),(x*u,ay*u));
\stopMPcode
\stoptext


Aditya
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