In LaTeX, the ex unit represents the height of a lowercase 'x' in the current font.
Is there a length in LaTeX that represents the height of a capital 'X'?
[Tex/LaTex] n `ex` unit equivalent for the capital ‘X’ in LaTeX
characterslengthsunit-of-measure
Related Solutions
Don't tell anyone I told you, but you can go
\def\unitlength{}
\sbox{\mabox}{\includegraphics[scale=0.10]{Pingouin}}
\makebox(0pt,0pt)[b]{\put(0pt,0pt){\usebox\mabox}}
\fbox{\makebox(\wd\mabox,\ht\mabox)[b]{\put(0pt,0pt){\parbox{\wd\mabox}{blindtext}}}}
Note that having made \unitlength unitless, you have to put explicit units in places that normally take an integer.
The alternative is to use \strip@pt defined in LaTeX eg this use where LaTeX is switching between unit and non-unit font size representation
\edef\f@size{\strip@pt\@tempdimb}%
but often it's easier just to use units everywhere in picture mode, then you are not restricted to using the same units throughout.
If using fontspec you can switch off the contextual alternates:
\documentclass{article}
\usepackage{fontspec}
\newopentypefeature{Contextuals}{NoAlternate}{-calt}
\defaultfontfeatures{Kerning=Uppercase,Mapping=tex-text,}
\setmainfont{Garamond Premier Pro}
\begin{document}
Quad Qed
\addfontfeatures{Contextuals=NoAlternate}
Quad Qed
\end{document}
(Sorry I miss that you don’T want XeTeX, but I don’t delet this answer since it may help other searching for this question …)
Best Answer
The information about 1ex is stored in the font; it is usually the height of a lowercase ‘x’, but it need not be necessarily.
You can access the height of an uppercase ‘X’ by
A way for expressing lengths in this ‘unit of measure’ is
so you can say something like
or
where
\mylenhas been allocated with\newlength.