* Adding whitespace equivalent to a -ve sign
@ 2008-02-11 17:51 Dave
2008-02-11 18:38 ` Aditya Mahajan
0 siblings, 1 reply; 2+ messages in thread
From: Dave @ 2008-02-11 17:51 UTC (permalink / raw)
To: mailing list for ConTeXt users
Hi all,
I am trying to line up some equations on a page and I'd like to insert
some whitespace that has the same width as a -ve sign in an equation.
An example would be trying to ensure the cosine and sine and on the
first and second rows (second column) in the matrix below:
\startpmatrix
% Row 1
\NC - \cos \theta_{\text{el}} \, \sin \theta_{\text{az}}
\NC \cos \theta_{\text{az}}
\NC \sin \theta_{\text{el}} \, \sin \theta_{\text{el}} \NR
% Row 2
\NC - \cos \theta_{\text{el}} \, \cos \theta_{\text{az}}
\NC - \sin \theta_{\text{az}}
\NC \sin \theta_{\text{el}} \, \cos \theta_{\text{el}} \NR
% Row 3
\NC - \sin \theta_{\text{el}}
\NC 0
\NC \cos \theta_{\text{el}} \NR
\stoppmatrix
Any ideas?
Thanks,
Graham
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Adding whitespace equivalent to a -ve sign
2008-02-11 17:51 Adding whitespace equivalent to a -ve sign Dave
@ 2008-02-11 18:38 ` Aditya Mahajan
0 siblings, 0 replies; 2+ messages in thread
From: Aditya Mahajan @ 2008-02-11 18:38 UTC (permalink / raw)
To: mailing list for ConTeXt users
On Mon, 11 Feb 2008, Dave wrote:
> Hi all,
>
> I am trying to line up some equations on a page and I'd like to insert
> some whitespace that has the same width as a -ve sign in an equation.
> An example would be trying to ensure the cosine and sine and on the
> first and second rows (second column) in the matrix below:
>
> \startpmatrix
> % Row 1
> \NC - \cos \theta_{\text{el}} \, \sin \theta_{\text{az}}
> \NC \cos \theta_{\text{az}}
change this to
\NC \hphantom{-} \cos \theta ....
> \NC \sin \theta_{\text{el}} \, \sin \theta_{\text{el}} \NR
> % Row 2
> \NC - \cos \theta_{\text{el}} \, \cos \theta_{\text{az}}
> \NC - \sin \theta_{\text{az}}
> \NC \sin \theta_{\text{el}} \, \cos \theta_{\text{el}} \NR
> % Row 3
> \NC - \sin \theta_{\text{el}}
> \NC 0
> \NC \cos \theta_{\text{el}} \NR
> \stoppmatrix
>
> Any ideas?
Normally you have to be a bit careful with minus as it is both a uniary
and binary operator. To get the space equal to a uniary operator
\hphantom{-} should be ok, to get space equal to binary operator, you can
try \hphantom{{}-} or \hphantom{{}-{}}
Aditya
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___________________________________________________________________________________
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