[NTG-context] how can I use framewidth in calculations

Hans Hagen pragma at wxs.nl
Sat Mar 24 11:27:28 CET 2012


On 24-3-2012 08:44, Herbert Voss wrote:
> Am 24.03.2012 08:30, schrieb Thomas A. Schmitz:
>> On 03/24/12 03:27, Rogers, Michael K wrote:
>>> Try
>>>
>>> \framed[width=7cm]{\externalfigure[cow][width=\dimexpr\framedparameter{width}*9/10]}
>>>
>>>
>>>
>>> [I don't understand \dimexpr. For instance 7cm = ~198pt, 0.9 * 7 cm =
>>> ~179pt, but \dimexpr0.9\framedparameter{width} yields 27.5992pt. It
>>> doesn't seem to work well with decimals. No wiki page for it, that I
>>> can find.]
>>
>> Thank you, that is exactly what I needed! I'll see if I can find some
>> more information about \dimexpr now!
>
> \framed[width=7cm]{\externalfigure[cow][width=0.75\expandafter\dimexpr\framedparameter{width}]}

there is no need for \expandafter here as \dimexpr will expand what 
comes after it anyway


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