beamer: How to align two images side by side and to scale them automatically to use whole slide?

Question

I have two images. How do I align them side by side and scale them so that both of them together occupy the whole horizontal space in a beamer presentation?

\begin{frame}
\frametitle{Inconsistency}
\begin{itemize}
\item 
\begin{center}
\includegraphics[scale=0.3]{peer}
\includegraphics[scale=0.3]{peer-inconsistent}  
\end{center}
\end{itemize}
\end{frame}

score 49 · Accepted Answer · answered Apr 30 '12 at 21:10

49

If vertical size do not matter, then you could use

\includegraphics[width=<X>\textwidth]{<first image>}%
\includegraphics[width=<1-X>\textwidth]{<second image>}

Here <X> denotes a number in (0,1), while <1-X> denotes its complement in the interval (0,1). Note the % to remove any space between the images. For equally-sized images, <X>=<1-X>=.5. Using only width as the scaling dimension will scale the height proportionally, maintaining the aspect ratio.

If vertical size does matter, you can also specify the height.

answered Apr 30 '12 at 21:10

Werner

603,163

2

why do I get Illegal unit of measure (pt inserted) error? for \includegraphics[width=0.5\textwidth]{peer} – epsilon8 Apr 30 '12 at 21:13
@user494461: I don't know. You need to provide more context (either in comment, but preferably by editing your original question). – Werner Apr 30 '12 at 21:23
@user494461: This should work perfectly. Could you check it again. If the issue is still there, please post a full compilable example which causes the issue. – Martin Scharrer Apr 30 '12 at 22:38
1

That works fine for me. However I want to add captions under the images. So I have to use some figure environnement for which your solution does not work. I find minicaption able to do that in beamer. The only problem is that you have two width: the width of the minifigure and the width of the image in the figure so tweaking is needed. – Gabriel Devillers Sep 19 '17 at 20:15
+1 for the % at the line end. This one gets me again and again. – Christoph90 Oct 12 '20 at 13:25
@Christoph90: Sure. See What is the use of percent signs (%) at the end of lines? – Werner Oct 13 '20 at 17:12

score 34 · Answer 2 · edited Apr 13 '17 at 12:36

If you want to add captions to it, I suggest:

\begin{frame}{Pixelweise Segmentierung}
    \begin{figure}[ht]
        \begin{minipage}[b]{0.45\linewidth}
            \centering
            \includegraphics[width=\textwidth]{a.png}
            \caption{Label for a}
            \label{fig:a}
        \end{minipage}
        \hspace{0.5cm}
        \begin{minipage}[b]{0.45\linewidth}
            \centering
            \includegraphics[width=\textwidth]{b.png}
            \caption{Label for b}
            \label{fig:b}
        \end{minipage}
    \end{figure}
\end{frame}

Additionally, you might want to add the line

\setbeamertemplate{caption}{\raggedright\insertcaption\par}

to prevent the prefix "Figure" (source).

score 28 · Answer 3 · edited Mar 15 '14 at 22:44

28

Just use width=0.5\textwidth instead of scale=3. The width option will scale an image to match the given width while keeping the aspect ratio.

To get a little white space between them you may use something like this.

\begin{figure}
   \includegraphics[width=0.475\textwidth]{peer}
   \hfill
   \includegraphics[width=0.475\textwidth]{peer-inconsistent}
\end{figure}

edited Mar 15 '14 at 22:44

Community

1

answered Apr 30 '12 at 21:09

Tobi

56,353

score 6 · Answer 4 · answered Apr 30 '12 at 21:15

6

You can use the columns enviroment:

\begin{frame}
\frametitle{Incosistency}
\begin{columns}[c]
    \column{.5\textwidth}
        \begin{center}
            \includegraphics[scale=0.3]{peer}
        \end{center}
    \column{.5\texwidth}
        \begin{center}
             \includegraphics[scale=0.3]{peer-inconsistent} 
        \end{center}
\end{columns}

\end{frame}

answered Apr 30 '12 at 21:15

gcedo

2,699
23
20

2

This won't scale the images to the required size. – Martin Scharrer Apr 30 '12 at 22:37
I had wrongly interpreted the question, my bad. – gcedo May 01 '12 at 12:04
1

There's a small typo. Replace 'texwidth' by 'textwidth' ;-) – Pol Dellaiera Jan 23 '21 at 09:06

beamer: How to align two images side by side and to scale them automatically to use whole slide?

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