# Split subfigures over multiple pages

I have the following code for a Figure with 4 subfigures:

\documentclass{article}
\usepackage{graphicx}
\usepackage{caption}
\usepackage{subcaption}

\begin{document}

\begin{figure}[b]
\centering
\begin{subfigure}[b]{\textwidth}
\includegraphics[width=\textwidth]{./plots/arm1.pdf}
\subcaption{$Q^{*}$ values for arm 1}
\label{fig:arm1}
\end{subfigure}
~
\begin{subfigure}[b]{\textwidth}
\includegraphics[width=\textwidth]{./plots/arm2.pdf}
\subcaption{$Q^{*}$ values for arm 2}
\label{fig:arm2}
\end{subfigure}
~
\begin{subfigure}[b]{\textwidth}
\includegraphics[width=\textwidth]{./plots/arm3.pdf}
\subcaption{$Q^{*}$ values for arm 3}
\label{fig:arm3}
\end{subfigure}
~
\begin{subfigure}[b]{\textwidth}
\includegraphics[width=\textwidth]{./plots/arm4.pdf}
\subcaption{$Q^{*}$ values for arm 4}
\label{fig:arm4}
\end{subfigure}
\caption{$Q^{*}$ values for different arms}
\label{fig:arms}
\end{figure}

\end{document}

But this way, the 4 subfigures are too large to fit on 1 page. I would like to split this over 2 pages, keeping the subcaptions a, b, ... How can I do this?

Split your figure into two figures and than to the second one immediately after \begin{figure} add command \ContinuedFloat. With this both figures will have the same caption number, however the sub captions numbering is continued from the previous figure:

\documentclass{article}
\usepackage{graphicx}
\usepackage{caption}
\usepackage[skip=0.5ex]{subcaption}

%---------------- show page layout. don't use in a real document!
\usepackage{showframe}
\renewcommand\ShowFrameLinethickness{0.15pt}
\renewcommand*\ShowFrameColor{\color{red}}
%---------------------------------------------------------------%
\usepackage{lipsum}

\begin{document}
\lipsum[1]
\begin{figure}[!b]
\centering
\begin{subfigure}{0.6\textwidth}
\includegraphics[width=\linewidth]{example-image}
\subcaption{$Q^{*}$ values for arm 1}
\label{fig:arm1}
\end{subfigure}

\medskip
\begin{subfigure}{0.6\textwidth}
\includegraphics[width=\linewidth]{example-image}
\subcaption{$Q^{*}$ values for arm 2}
\label{fig:arm2}
\end{subfigure}
\caption{$Q^{*}$ values for different arms}
\end{figure}%
\begin{figure}[ht]\ContinuedFloat
\centering
\begin{subfigure}{0.6\textwidth}
\includegraphics[width=\linewidth]{example-image}
\subcaption{$Q^{*}$ values for arm 3}
\label{fig:arm3}
\end{subfigure}

\medskip
\begin{subfigure}{0.6\textwidth}
\includegraphics[width=\linewidth]{example-image}
\subcaption{$Q^{*}$ values for arm 4}
\label{fig:arm4}
\end{subfigure}
\caption[]{$Q^{*}$ values for different arms (cont.)}
\label{fig:arms}
\end{figure}
\lipsum[2-3]
\end{document}

• @JNevens, any news? do you resolve your problem? does my answer help you? Feb 9, 2018 at 19:42
• Is there a way to prevent that latex inserts something else (e.g. a table or a text page) between the first figure and the second "ContinuedFloat" figure? Sep 23, 2019 at 11:18
• @Robert, sorry, I haven't crystal ball, than I would be able to see, what is going on in your document. So I can only repeat my "famous" words; in normal circumstances between floats as they are organized in MWE in my answer, this should not happen. Sep 23, 2019 at 15:32
• @LuísdeSousa, I doubt in your claim. I wrote text book 500 page long with 100 figures, some of them formatted as suggested in answer, 30 tables and about 400 equations and all works fine. Cause of your problems is not the use of solution suggested in my answer but something else. Jul 3, 2020 at 14:38
• This also works fine for me. I don’t believe something in LaTeX is length dependent. It would be like \alpha stops working after ~100 pages. So without a MWE showing the problem in other comments is impossible to see what’s going on May 31, 2021 at 11:55