Re: A few questions about aligned maths

[Aditya Mahajan <adityam@umich.edu>]

This can be corrected by changing the \vbox in the definition of 
\startmathlines to \vtop. This can be made configurable by adding a 
location key. Here is a complete example

\unprotect
\def\startmathlines
{\def\stop@math{$}
\def\NC{}
\def\NR{\def\NC{\cr}}
% Hack for number. Should be done by measuring the width of the number
\scratchdimen\dimexpr\displaywidth-4em \relax
\vbox \bgroup
\halign\bgroup
\hbox to \scratchdimen
{\hfil \strut
$\mathsurround\zeropoint\displaystyle{}## \stop@math
\hfil}%
\crcr
\hfilneg}

\def\stopmathlines
{\hfilneg
\crcr
\egroup
\egroup}
\protect

Once I understand the new experimental code, I will start playing around 
with aligned math support.

Aditya

On Sat, 17 Jan 2009, Dave wrote:

> Is there any progress on this?  I notice it is not yet in the core.  I'm in
> need of an AMSL split-like environment but the above doesn't work entirely
> as expected.  Below is an example.
> Any ideas?
> Thanks, Dave
>
> \placeformula
> \startformula \startalign
>  \NC \sigma_{L_s}^2
>      \NC= E\left\{ \eps_L^2 \right\} \NR
>  \NC \NC= \startmathlines
>       \NC E\left\{ \left( \frac{1}{L_{\ref}^2(\nu)}
>
> \Re{\eps_{\pth}+\eps_{\off}}\,\cos\left(\phi(\nu)\right) +
>
> \Im{\eps_{\pth}+\eps_{\off}}\,\sin\left(\phi(\nu)\right)
>                    \right)^2 \right\} - \NR
>       \NC E\left\{ \frac{2}{L_{\ref}^2(\nu)} \,
> \frac{L_{\pth}(\nu)}{L_{\ref}(\nu)}
>                    \left(
>                      \Re{\eps_{\pth} +
> \eps_{\off}}\,\cos\left(\phi(\nu)\right) +
>                      \Im{\eps_{\pth} +
> \eps_{\off}}\,\sin\left(\phi(\nu)\right)
>                    \right) \NR
>                \NC \left(
>                      \Re{\eps_{\ref} +
> \eps_{\off}}\,\cos\left(\phi(\nu)\right) +
>                      \Im{\eps_{\ref} +
> \eps_{\off}}\,\sin\left(\phi(\nu)\right) +
>                    \right)
>                    \right\} + \NR
>       \NC E\left\{ \frac{1}{L_{\ref}^2(\nu)} \,
> \frac{L_{\pth}^2(\nu)}{L_{\ref}^2(\nu)}
>                    \left(
>                      \Re{\eps_{\ref} +
> \eps_{\off}}\,\cos\left(\phi(\nu)\right) +
>                      \Im{\eps_{\ref} +
> \eps_{\off}}\,\sin\left(\phi(\nu)\right)
>                    \right)^2 \right\} \NR
>            \stopmathlines \NR
>  \NC \NC= \frac{1}{L_{\ref}^2} \, \left( \sigma_{\pth}^2 +
>           \left(\frac{L_{\pth}}{L_{\ref}} - 1\right)^2 \sigma_{\off}^2 +
>           \left(\frac{L_{\pth}}{L_{\ref}}\right)^2 \sigma_{\ref}^2 \right)
>           \NR[eq:SpcTransVarC2]
> \stopalign \stopformula
>
>
> On Mon, Mar 24, 2008 at 7:17 AM, Aditya Mahajan <adityam@umich.edu> wrote:
>
>> On Mon, 24 Mar 2008, Hans Hagen wrote:
>>
>>> Morgan Brassel wrote:
>>>
>>>> Sorry that I can't help you with the implementation, Aditya... I just
>> want
>>>> to confirm that your new macro perfectly fits my needs. I hope it will
>>>> make it into the core, it really is useful!
>>>
>>> once aditya is confident that it makes sense and works as expected it
>>> will probably end up in the core, but as usual i'll wait till he sends
>>> me an updated core file
>>
>> It will be a while before I am able to get all the bells and whistles
>> (take care of where the formula number is to be placed, and how how the
>> formula is to be aligned).
>>
>> Aditya
>>
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