{beamer} use \insertsection to load image in section frame - replace spaces

Question

I have a custom section frame defined for my presentations. I'd like to load an image with the name of the section title. Problem is that LaTeX usually fails to load image if their names contain spaces. So I'm looking for a solution to replace the spaces (and by chance other special chars too) when passing \insertsection as parameter to \includegraphics.

here is a (not) working minimal example:

\documentclass{beamer}
\usetheme{default}
\usepackage{inputenc}
\setbeamertemplate{section page}{{
    \begin{frame}{\insertsectionhead}
        \begin{columns}
            \begin{column}{0.65\textwidth}                 
                 this should load an image with name
                  \texttt{some-section-with-spaces.png}
                 in the on the right of this text (if that exists...)
            \end{column}
            \begin{column}{0.45\textwidth}% 
                \includegraphics[width=0.7\linewidth]{%
                %% how to  replace spaces with minus or underscore here
                    \insertsection%
                }
            \end{column}
        \end{columns}
    \end{frame}
}}
\AtBeginSection{
  \sectionpage
}
\begin{document}
  \section{some section with spaces in name}
\end{document}

An easy workaround would be to name your images by the section number instead of the name. — samcarter_is_at_topanswers.xyz, Oct 27 '18 at 17:36
Or use the shortsection instead to define an alternative title with spaces replaced. — samcarter_is_at_topanswers.xyz, Oct 27 '18 at 17:38
Off-topic: you don't need \usetheme{default}, as the name says, this theme is loaded per default — samcarter_is_at_topanswers.xyz, Oct 27 '18 at 17:40
@samcarter that would be a hidden dependency which I'd like to avoid. But on the other hand it has the beauty that the image name could differ from the section title... — Timothy Truckle, Oct 27 '18 at 17:40
mmmm, I just saw that you are already using the short section title for the frametitle of the section pages. Maybe not such a good idea then. — samcarter_is_at_topanswers.xyz, Oct 27 '18 at 17:46
In case you want to pursue your original approach with the section title, then maybe the grffile package could help. — samcarter_is_at_topanswers.xyz, Oct 27 '18 at 17:50
@samcarter looks like the {grffile} package is my way to go (not only because of this special case....) So please make an answer from your comment so that I can accept it. — Timothy Truckle, Oct 28 '18 at 08:20

samcarter_is_at_topanswers.xyz · Accepted Answer · 2018-10-28T11:08:55.160

Approach 1

A simple workaround could be to use the section number to name the images:

\documentclass{beamer}
%\usetheme{default}
\usepackage{inputenc}
\setbeamertemplate{section page}{
    \begin{frame}{\insertsectionhead}
        \begin{columns}
            \begin{column}{0.65\textwidth}                 
                 this should load an image with name
                  \texttt{some-section-with-spaces.png}
                 in the on the right of this text (if that exists...)
            \end{column}
            \begin{column}{0.45\textwidth}% 
                \includegraphics[width=0.7\linewidth]{\thesection}
            \end{column}
        \end{columns}
    \end{frame}
}

\AtBeginSection{
  \sectionpage
}

\begin{document}
  \section{some section with spaces in name}

  \section{title}
\end{document}

Approach 2

If you want to stick to your original plan and use spaces in file names, then the grffile package could help.

{beamer} use \insertsection to load image in section frame - replace spaces

1 Answers1

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