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I have a problem with the package "exam". I want to put in the orizontal direction 4 images. And move every circle close to the middle of every image. I have post the picture. Thank you very much.

\begin{oneparcheckboxes}
 \begin{figure}[!h]
  \centering
  \captionsetup{font={small,it}, labelfont=bf}
  %\subfloat[][\emph{}] % didascalia sottofigura
  {\choice \includegraphics[width=0.2\textwidth]{grafico_9.pdf}} \quad
  \captionsetup{font={small,it}, labelfont=bf}
  %\subfloat[][\emph{}] % didascalia sottofigura
  {\choice\includegraphics[width=.2\textwidth]{grafico_9.pdf}} \quad
 % \subfloat[][\emph{}] % didascalia sottofigura
  {\choice\includegraphics[width=.2\textwidth]{grafico_9.pdf}} \quad
  % \subfloat[][\emph{}] % didascalia sottofigura
  {\choice\includegraphics[width=.2\textwidth]{grafico_9.pdf}} \\
  \end{figure}
 \end{oneparcheckboxes}

enter image description here

Torbjørn T.
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ryuk
  • 2,257
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    Could you please make your example a complete document, so we can compile it directly? You are likely to get more help here if you do. – Thruston Jan 03 '16 at 23:06
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    Why do you have a figure environment nested inside the oneparcheckboxes environment? – Thruston Jan 03 '16 at 23:06
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    See here: http://tex.stackexchange.com/questions/7219/how-to-vertically-center-two-images-next-to-each-other – Thruston Jan 03 '16 at 23:25
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    This is not a problem with the exam class. It's a general problem of how to vertically centre a graphic. Basically get rid of the figure stuff and use \choice $\vcenter{\hbox{\includegraphics[width=0.2\textwidth]{grafico_9.pdf}}}$ for each item – Thruston Jan 03 '16 at 23:27

1 Answers1

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You want something more like this:

\documentclass{exam}
\usepackage{graphicx}
\begin{document}
\begin{oneparcheckboxes}
\choice $\vcenter{\hbox{\includegraphics[width=0.15\textwidth]{yourgraphicfile}}}$
\quad
\choice $\vcenter{\hbox{\includegraphics[width=0.15\textwidth]{yourgraphicfile}}}$
\quad
\choice $\vcenter{\hbox{\includegraphics[width=0.15\textwidth]{yourgraphicfile}}}$
\quad
\choice $\vcenter{\hbox{\includegraphics[width=0.15\textwidth]{yourgraphicfile}}}$
\end{oneparcheckboxes}
\end{document}

If you are doing this a lot, then you could hide the details by defining a new command:

\documentclass{exam}
\usepackage{graphicx}
\newcommand{\vpic}[1]{$\vcenter{\hbox{\includegraphics[width=0.15\textwidth]{#1}}}$}
\begin{document}
\begin{oneparcheckboxes}
    \choice \vpic{yourgraphicfile} \quad
    \choice \vpic{yourgraphicfile} \quad
    \choice \vpic{yourgraphicfile} \quad
    \choice \vpic{yourgraphicfile}
\end{oneparcheckboxes}
\end{document}
Thruston
  • 42,268
  • yes! it's perfect! it works very wel! :) thanks a lot! – ryuk Jan 03 '16 at 23:42
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    Also \raisebox{-.5\height}{\includegraphics[...]{...}}; the difference is negligible. Or \begin{tabular}{@{}c@{}}\includegraphics[...]{...}\end{tabular}. – egreg Jan 03 '16 at 23:45
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    @egreg sì certo, and several other options that are discussed in the question I linked. – Thruston Jan 03 '16 at 23:48
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    It has always surprised me that there is no [vcenter] option for the \includegraphics command. – Thruston Jan 03 '16 at 23:53
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    @Thruston There is valign=m if you load adjustbox with the export option – egreg Jan 04 '16 at 00:02