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From: Jan Heinen <JaHeinen@gmx.de>
To: ntg-context@ntg.nl
Subject: calculating with dimension unit
Date: Mon, 22 Apr 2013 01:13:15 +0200	[thread overview]
Message-ID: <5174728B.70102@gmx.de> (raw)

In a book I produced with ConTeXt last year, I did a lot of 
calculation to be able to change the layout dynamicaly.

With the actual version of ConTeXt I can't compile the book. 
I have tried a lot of things today ... without success.
I hope my minimal-example helps you to understand, what I 
want to do - and what I am doing wrong:


\starttext
\setupexternalfigures[location={local,global,default}]

\defineexpandable\ColumnA    {30mm}
\defineexpandable\ColumnB    {40mm}
\defineexpandable\ColumnABi    {\dimexpr(\ColumnA + \ColumnB)}
\defineexpandable\ColumnABii   {\ctxlua{context(\ColumnA + 
\ColumnB)}}
\newdimen\ColumnABiii \ColumnABiii = \dimexpr(\ColumnA + 
\ColumnB)

A  \ColumnA% ok

B  \ColumnB% ok

% I sadly get only errors when I delete the comments:
%ColumnABi: \ColumnABi

%ColumnABii: \ColumnABii

%ColumnABiii: \ColumnABiii

%\externalfigure[cow][width=\ColumnABiii]

~
\page
\stoptext



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             reply	other threads:[~2013-04-21 23:13 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-21 23:13 Jan Heinen [this message]
2013-04-21 23:59 ` luigi scarso
2013-04-22  6:48 ` Wolfgang Schuster
2013-04-22  8:14   ` Hans Hagen
2013-04-22 10:43     ` Wolfgang Schuster
2013-04-22 14:00       ` Aditya Mahajan
2013-04-22  8:23 ` Hans Hagen
2013-04-22 11:31 Jan Heinen
2013-04-22 13:58 ` Aditya Mahajan
2013-04-22 14:51 ` luigi scarso
2013-04-22 21:28 Jan Heinen
2013-04-22 21:34 ` Wolfgang Schuster
2013-04-23 18:18 Jan Heinen

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