Louis,
a hunch, which might work.
It seems that, if you try to set the length in your preamble,
`\beamer@frametextheight` is not yet defined.
So, you might try the hook `\AtBeginDocument` to see if the definition
comes at a better timing.
#+LATEX_HEADER:
\newlength\mytextheight\AtBeginDocument{\makeatletter\setlength\mytextheight{\beamer@frametextheight}\makeatother}
As I said, it's a hunch, for I haven't tested. But I think it may be it.
Best,
Gustavo.
On 29/11/2018 11:07, Loris Bennett wrote:
Eric S Fraga <esfli...@gmail.com> writes:
On Thursday, 29 Nov 2018 at 09:38, Julius Dittmar wrote:
Am 29.11.18 um 09:13 schrieb Julius Dittmar:
Am 29.11.18 um 08:17 schrieb Loris Bennett:
#+latex_header: \makeatletter\let\mytextheight\beamer@frametexheight\makeatother
#+attr_latex: :height 0.75\mytextheight
Oh, or perhaps just a typo is involved: is it really
\beamer@frametexheight or rather \beamer@frametextheight you are chasing
after?
Also, you may need to define your mytextheight as a length and then use
\setlength instead of \let.
After correcting the typo I followed Eric's and Julius's suggestions and
I tried adding
#+LATEX_HEADER:
\newlength\mytextheight\makeatletter\setlength\mytextheight{\beamer@frametextheight}\makeatother
to the beginning of the Org file, but in this case
\the\mytextheight
is 0.0pt. After that I tried adding the definition on the slide itself:
#+BEGIN_SRC latex
\newlength\mytextheight\makeatletter\setlength\mytextheight{\beamer@frametextheight}\makeatother
#+END_SRC
but got the error
! Undefined control sequence.
<argument> \beamer
l.153 \end{frame}
! Missing number, treated as zero.
<to be read again>
@
l.153 \end{frame}
Any thoughts?
Cheers,
Loris
