# Change caption name of an appendix

I want to change the caption name of a figure for an appendix. For example I have

\caption{This is a supplemental figure.}

and by default the caption appears as

Figure 1: This is a supplemental figure.


However I want

Figure S1 - This is a supplemental figure.


I tried this

\renewcommand{\figurename}{Figure S}

but it adds a space in between and results in

Figure S 1 - This is a supplemental figure.


\makeatletter
\makeatother


A MWE:

\documentclass{report}

\makeatletter
\makeatother

\begin{document}

\begin{figure}
\caption{Not in Appendix}
\end{figure}

\appendix

\begin{figure}
\caption{In Appendix}
\end{figure}

\end{document}


I would put the letter into the number:

\renewcommand*{\thefigure}{S\arabic{figure}}


Then also referencing works. \ref reports the number including the letter.

This would work if using the appendices environment:

\g@addto@macro\appendices{\renewcommand{\thefigure}{S\arabic{figure}}\setcounter{figure}{0}}


Latex code below:

\documentclass{report}
\usepackage{appendix}

\makeatletter
\makeatother

\begin{document}

\begin{figure}
\caption{Not in Appendix}
\end{figure}

\begin{appendices}

\begin{figure}
\caption{In Appendix}
\end{figure}

\end{appendices}
\end{document}

• \g@addto@macro\appendices and not \g@addto@macro\appendix – user7312684 May 7 at 0:54