* how to use \dimexpr and fractional values
@ 2013-06-28 6:54 Thomas A. Schmitz
2013-06-28 7:16 ` Peter Münster
2013-06-28 7:34 ` luigi scarso
0 siblings, 2 replies; 4+ messages in thread
From: Thomas A. Schmitz @ 2013-06-28 6:54 UTC (permalink / raw)
To: mailing list for ConTeXt users
Hi all,
long story short: I want to calculate a width or height from user input,
which is in the form "0.x" (as in "0.3\textwidth") since I want to use
that number differently in different circumstances. Problem is that
\dimexpr doesn't like decimal values. Example (uncomment second
\externalfigure to see the problem):
\starttext
\def\myfactor{0.3}
\externalfigure[mill][height=\myfactor\textwidth]
%\externalfigure[mill][height=\dimexpr10cm*\myfactor\relax]
\stoptext
(silly, but shows my problem). How can I obtain an image of height
"0.3*10cm" from my \myfactor macro? I tried to get my head around
\numexpr etc. in the etex manual, but couldn't really figure out what to do.
Thanks, and all best
Thomas
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^ permalink raw reply [flat|nested] 4+ messages in thread* Re: how to use \dimexpr and fractional values
2013-06-28 6:54 how to use \dimexpr and fractional values Thomas A. Schmitz
@ 2013-06-28 7:16 ` Peter Münster
2013-06-28 7:34 ` Thomas A. Schmitz
2013-06-28 7:34 ` luigi scarso
1 sibling, 1 reply; 4+ messages in thread
From: Peter Münster @ 2013-06-28 7:16 UTC (permalink / raw)
To: mailing list for ConTeXt users
On Fri, Jun 28 2013, Thomas A. Schmitz wrote:
> %\externalfigure[mill][height=\dimexpr10cm*\myfactor\relax]
\externalfigure[mill][height=\myfactor\dimexpr10cm\relax]
--
Peter
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: how to use \dimexpr and fractional values
2013-06-28 6:54 how to use \dimexpr and fractional values Thomas A. Schmitz
2013-06-28 7:16 ` Peter Münster
@ 2013-06-28 7:34 ` luigi scarso
1 sibling, 0 replies; 4+ messages in thread
From: luigi scarso @ 2013-06-28 7:34 UTC (permalink / raw)
To: mailing list for ConTeXt users
[-- Attachment #1.1: Type: text/plain, Size: 679 bytes --]
On Fri, Jun 28, 2013 at 8:54 AM, Thomas A. Schmitz <
thomas.schmitz@uni-bonn.de> wrote:
> Hi all,
>
> long story short: I want to calculate a width or height from user input,
> which is in the form "0.x" (as in "0.3\textwidth") since I want to use that
> number differently in different circumstances. Problem is that \dimexpr
> doesn't like decimal values.
>
long answer short
\starttext
\def\myfactor{0.3}
\def\Myfactor{3}
\externalfigure[mill][height=\myfactor\textwidth]
\externalfigure[mill][height=\dimexpr \textwidth * \Myfactor / 10\relax]
\externalfigure[mill][height=\dimexpr 10cm * \Myfactor / 10\relax]
\stoptext
http://wiki.contextgarden.net/Expressions
--
luigi
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread
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2013-06-28 6:54 how to use \dimexpr and fractional values Thomas A. Schmitz
2013-06-28 7:16 ` Peter Münster
2013-06-28 7:34 ` Thomas A. Schmitz
2013-06-28 7:34 ` luigi scarso
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