[NTG-context] how to use \dimexpr and fractional values
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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Re: [NTG-context] how to use \dimexpr and fractional values
On Fri, Jun 28 2013, Thomas A. Schmitz wrote: %\externalfigure[mill][height=\dimexpr10cm*\myfactor\relax] \externalfigure[mill][height=\myfactor\dimexpr10cm\relax] -- Peter ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] how to use \dimexpr and fractional values
On Fri, Jun 28, 2013 at 8:54 AM, Thomas A. Schmitz
thomas.schm...@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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archive : http://foundry.supelec.fr/projects/contextrev/
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Re: [NTG-context] how to use \dimexpr and fractional values
On 06/28/2013 09:16 AM, Peter Münster wrote: On Fri, Jun 28 2013, Thomas A. Schmitz wrote: %\externalfigure[mill][height=\dimexpr10cm*\myfactor\relax] \externalfigure[mill][height=\myfactor\dimexpr10cm\relax] Sigh... Thanks Peter, I should have tried this myself. I think I'm losing it, should look into early retirement or begin to use MS Word... Thomas ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
