[Tex/LaTex] beamer footnote numbers in overprint

beamerfootnotesoverlays

I have a series of text + images that I want to appear on the same slide.
Both the text and image have some reference to be quoted for which I am using footnotes (this is done throughout the presentation).

I am facing 2 issues:

When I use \footnote{} within the overprint, the footnote
numbers get changed to letters. However, I would want the footnote to continue the number from the previous slide's footnote.
On all slides, the same footnote letters are shown. I want the footnote numbers to be incremented.

Here is my attempt.
How can I resolve both the issues?

\documentclass{beamer}


\begin{document}

\begin{frame}{Test Frame}
\begin{overprint}

\onslide<1>
\vspace*{1.5cm}
First line~\footnote{footnote 1-slide 1}
\vfill
\includegraphics[width=2cm]{jinglebells}\\
Jingle bells~\footnote{footnote 2-slide 1}

\onslide<2>
\vspace*{1.5cm}
Second line~\footnote{footnote 1-slide 2}
\vfill
\includegraphics[width = 2cm]{holiday}\\
Holiday picture~\footnote{footnote 2- slide 2}


\end{overprint}
\end{frame}

\end{document}

Best Answer

I don't think there's an easy workaround.

First option

Footnotes inside an overprint are tratead as minipage's footnotes.

What you can do is

transform footnote marks in numeric ones through the command
```
\renewcommand{\thempfootnote}{\arabic{mpfootnote}}
```
Insert this line at the beginning of each \onslide
```
\setcounter{mpfootnote}{\value{footnote}}
```
and this one at its end
```
\setcounter{footnote}{\value{mpfootnote}}
```
to count these footnotes as normal ones.

MWE:

\RequirePackage[demo]{graphicx} %remove this line in your document
\documentclass{beamer}

\renewcommand{\thempfootnote}{\arabic{mpfootnote}}

\begin{document}

\begin{frame}{Test Frame}
\begin{overprint}

\onslide<1>
\setcounter{mpfootnote}{\value{footnote}}
\vspace*{1.5cm}
First line~\footnote{footnote 1-slide 1}
\vfill
\includegraphics[width=2cm]{jinglebells}\\
Jingle bells~\footnote{footnote 2-slide 1}
\setcounter{footnote}{\value{mpfootnote}}

\onslide<2>
\setcounter{mpfootnote}{\value{footnote}}
\vspace*{1.5cm}
Second line~\footnote{footnote 1-slide 2}
\vfill
\includegraphics[width = 2cm]{holiday}\\
Holiday picture~\footnote{footnote 2- slide 2}
\setcounter{footnote}{\value{mpfootnote}}

\end{overprint}
\end{frame}

\end{document}

Output

enter image description here

Second option

Declare footnotes at frame-level using the optional argument frame:

\footnote[frame]{...}

MWE

\RequirePackage[demo]{graphicx} %remove this line in your document
\documentclass{beamer}

\begin{document}

\begin{frame}{Test Frame}
\begin{overprint}

\onslide<1>
\vspace*{1.5cm}
First line~\footnote[frame]{footnote 1-slide 1}
\vfill
\includegraphics[width=2cm]{jinglebells}\\
Jingle bells~\footnote[frame]{footnote 2-slide 1}

\onslide<2>
\vspace*{1.5cm}
Second line~\footnote[frame]{footnote 1-slide 2}
\vfill
\includegraphics[width = 2cm]{holiday}\\
Holiday picture~\footnote[frame]{footnote 2- slide 2}

\end{overprint}
\end{frame}

\end{document}

The output in this case, however, shows all footnotes in all slides....

enter image description here

Third option

Add also the slide number to the footnote.

MWE:

\RequirePackage[demo]{graphicx} %remove this line in your document
\documentclass{beamer}

\begin{document}

\begin{frame}{Test Frame}
\begin{overprint}

\onslide<1>
\vspace*{1.5cm}
First line~\footnote<1>[frame]{footnote 1-slide 1}
\vfill
\includegraphics[width=2cm]{jinglebells}\\
Jingle bells~\footnote<1>[frame]{footnote 2-slide 1}

\onslide<2>
\vspace*{1.5cm}
Second line~\footnote<2>[frame]{footnote 1-slide 2}
\vfill
\includegraphics[width = 2cm]{holiday}\\
Holiday picture~\footnote<2>[frame]{footnote 2- slide 2}

\end{overprint}
\end{frame}

\end{document}

Unfortunately the output of the second slide shows a blank space where the footnotes of the first slide are.

enter image description here

Related Solutions

[Tex/LaTex] Centering images and overprint in Beamer

The overprint environment has a fixed width which defaults to the \textwidth (or maybe the similar \linewidth) and can be given using the optional argument. The whole environment is then centered, not just the image(s) inside it, which are internally left aligned. Because the environment is already as wide as the given space the centering effectively doesn't change its placement. You need to center the images inside the overprint area instead (e.g. using \centerline{\includegraphics[..]{..}}}) or reduce the overprint environment to the image width manually so that it can be effectively centered.

\documentclass{beamer}

\begin{document}

\begin{frame}{Test}
  \begin{center}
  text before
  \pause
  \begin{overprint}%
    \onslide<2>\centerline{\includegraphics[scale=0.3]{images/stack1.pdf}}%
    \onslide<3>\centerline{\includegraphics[scale=0.3]{images/stack2.pdf}}%
    \onslide<4>\centerline{\includegraphics[scale=0.3]{images/stack3.pdf}}%
    \onslide<5>\centerline{\includegraphics[scale=0.3]{images/stack4.pdf}}%
    \onslide<6>\centerline{\includegraphics[scale=0.3]{images/stack5.pdf}}%
    \onslide<7>\centerline{\includegraphics[scale=0.3]{images/stack6.pdf}}%
    \onslide<8>\centerline{\includegraphics[scale=0.3]{images/stack7.pdf}}%
  \end{overprint}
  text after
  \end{center}
\end{frame}

\end{document}

\documentclass{beamer}

\begin{document}

\begin{frame}{Test}
    \begin{center}
  text before
  \pause

  \begin{overprint}[7cm]%
    \onslide<2>\includegraphics[width=7cm]{images/stack1.pdf}%
    \onslide<3>\includegraphics[width=7cm]{images/stack2.pdf}%
    \onslide<4>\includegraphics[width=7cm]{images/stack3.pdf}%
    \onslide<5>\includegraphics[width=7cm]{images/stack4.pdf}%
    \onslide<6>\includegraphics[width=7cm]{images/stack5.pdf}%
    \onslide<7>\includegraphics[width=7cm]{images/stack6.pdf}%
    \onslide<8>\includegraphics[width=7cm]{images/stack7.pdf}%
  \end{overprint}%

  text after
  \end{center}
\end{frame}

\end{document}

I replaced the scale key with width here to ensure that the images have the same width as the overprint environment. I prefer the first \centerline solution because you don't have to match any widths.

[Tex/LaTex] Latex-Beamer: overprint-environment wobbles

Not very elegant perhaps, but you could simply add some negative vspace before the align*.

\documentclass[xcolor=dvipsnames]{beamer}
\mode<presentation>
\usetheme{Boadilla}

\usepackage[ngerman]{babel}
\usepackage[utf8]{inputenc}
\usepackage{amsfonts,amsmath,amssymb,amsthm}

\DeclareMathOperator{\Var}{Var}
\DeclareMathOperator{\E}{\mathbb E} 

\title{Dummy-Titel}
\subtitle{Dummy-Untertitel}
\author{Autor}

\date{\today}


\begin{document}

\begin{frame}{Erwartungswert}
    \begin{itemize}
        \item $\E(X_{t+1} | X_t = i) = \sum_{j=0}^{2N} j \cdot P(X_{t+1}=j | X_t = i)$
        \item $X_{t+1}$ binomialverteilt mit Parametern $n=2N$ und $p=\frac{i}{2N}$:
        $\Rightarrow \E(X_{t+1} | X_t=i) = n \cdot p = i$
        \item Martingal-Eigenschaft: $\E(X_{t+1} | X_t) = X_t$
    \end{itemize}
        \begin{overprint}
            \onslide<1>
            \vspace{-.5cm}
            \begin{align*}
                \E(X_t) &= \E(\E(X_{t+1} | X_t)) = \sum_{i=0}^{2N} E(X_{t+1} | X_t = i) \cdot P(X_t = i) \\
                &= \sum_{i=0}^{2N} \left( \sum_{j=0}^{2N} j \cdot P(X_{t+1}=j | X_t = i) \right) \cdot P(X_t = i) \\
                &= \sum_{j=0}^{2N} j \cdot \left( \sum_{i=0}^{2N} \cdot P(X_{t+1}=j , X_t = i) \right) \\
                &= \sum_{j=0}^{2N} j \cdot P(X_{t+1}=j) = \E(X_{t+1})
            \end{align*}
            \onslide<2>
            \begin{equation*}
                \Rightarrow \E(X_0) = \E(X_1) = \E(X_2) = \ldots
            \end{equation*}
        \end{overprint}
\end{frame}
\end{document}

Best Answer

First option

Second option

Third option

Related Solutions

[Tex/LaTex] Centering images and overprint in Beamer

[Tex/LaTex] Latex-Beamer: overprint-environment wobbles

Related Question