[NTG-context] Re: Scale content to height of the font, measure font height

[Wolfgang Schuster <wolfgang.schuster.lists@gmail.com>]

Gerion Entrup schrieb am 10.06.2024 um 13:16:
> Hi,
> 
> I'd like to scale something (actually a symbol drawn in TikZ) to the exact
> high of the char 'M'. I found the scale environment for it but struggle to
> measure the correct font height. I found the "definemeasure/measure/measured"
> commands but they define a dimension and are not for doing measurements on
> rendered text. Is there a simple way to get the height a char as a dimension?
> 
> MWE:
> ```
> \starttext
> % Is it possible to replace 1cm with a common expression?
> This is the letter M. \scale[height=1cm]{a} should have the exact same size as
> M.
> 
> This should also be true {\tfc with a bigger M. \scale[height=1cm]{a}}.
> \stoptext
> ```

\starttext
M\scale[height=\heightofstring{M}]{a}M
\stoptext

Wolfgang
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