captionssubfloats
I have 5 images to place (using the subfigure environment), I would like to place them either in two columns (one with 3 images, the other with 2), or in two lines (idem) and use the empty place that a 6th image would have taken to put the caption. How can I do that?
Thanks!
This uses the same idea as subequations of amsmath.
\documentclass{article}
\usepackage{graphicx}
\usepackage{subcaption}
\makeatletter
\newcounter{parentsubcaption}
\newenvironment{subsubcaption}
{\refstepcounter{sub\@captype}%
\protected@edef\theparentsubcaption{\@nameuse{thesub\@captype}}%
\setcounter{parentsubcaption}{\value{sub\@captype}}%
\setcounter{sub\@captype}{0}%
\@namedef{thesub\@captype}{\theparentsubcaption--\arabic{sub\@captype}}%
\ignorespaces
}{%
\setcounter{sub\@captype}{\value{parentsubcaption}}%
\ignorespacesafterend
}
\makeatother
\begin{document}
\begin{figure}
\centering
\begin{subsubcaption}
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure a--1}\label{a--1}
\end{subfigure}\qquad
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure a--2}\label{a--2}
\end{subfigure}
\end{subsubcaption}
\begin{subsubcaption}
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure b--1}\label{b--1}
\end{subfigure}\qquad
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure b--2}\label{b--2}
\end{subfigure}
\end{subsubcaption}
\caption{caption of entire figure}
\end{figure}
References:
\ref{a--1} and \subref{a--1};
\ref{b--1} and \subref{b--1}.
\end{document}
The above code doesn't really work if more figure environments use subsubcaption. Here's a workaround that tries to work well also with \ContinuedFloat.
\documentclass{article}
\usepackage{graphicx}
\usepackage{subcaption}
\usepackage{etoolbox}
\makeatletter
\newif\ifsubsubcaption@ContinuedFloat
\newif\ifsubsubcaption@nonfirst
\patchcmd{\ContinuedFloat}
{\caption@ContinuedFloat}
{\subsubcaption@ContinuedFloattrue\caption@ContinuedFloat}
{}{}
\newcounter{parentsubcaption}
\newenvironment{subsubcaption}
{\refstepcounter{sub\@captype}%
\protected@edef\theparentsubcaption{\@nameuse{thesub\@captype}}%
\setcounter{parentsubcaption}{\value{sub\@captype}}%
\setcounter{sub\@captype}{0}%
\@namedef{thesub\@captype}{\theparentsubcaption--\arabic{sub\@captype}}%
\ignorespaces
}{%
\setcounter{sub\@captype}{\value{parentsubcaption}}%
\ignorespacesafterend
}
\BeforeBeginEnvironment{subsubcaption}{%
\ifsubsubcaption@ContinuedFloat
\else
\ifsubsubcaption@nonfirst
\else
\subsubcaption@nonfirsttrue
\setcounter{sub\@captype}{0}%
\fi
\fi
}
\makeatother
\begin{document}
\begin{figure}
\centering
\begin{subsubcaption}
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure a--1}\label{a--1}
\end{subfigure}\qquad
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure a--2}\label{a--2}
\end{subfigure}
\end{subsubcaption}
\begin{subsubcaption}
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure b--1}\label{b--1}
\end{subfigure}\qquad
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure b--2}\label{b--2}
\end{subfigure}
\end{subsubcaption}
\caption{caption of entire figure}
\end{figure}
References:
\ref{a--1} and \subref{a--1};
\ref{b--1} and \subref{b--1}.
\begin{figure}
\ContinuedFloat
\centering
\begin{subsubcaption}
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure c--1}\label{c--1}
\end{subfigure}\qquad
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure c--2}\label{c--2}
\end{subfigure}
\end{subsubcaption}
\begin{subsubcaption}
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure d--1}\label{d--1}
\end{subfigure}\qquad
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure d--2}\label{d--2}
\end{subfigure}
\end{subsubcaption}
\caption{caption of entire figure (continued)}
\end{figure}
\begin{figure}
\centering
\begin{subsubcaption}
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure a--1}\label{a--1-x}
\end{subfigure}\qquad
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure a--2}\label{a--2-x}
\end{subfigure}
\end{subsubcaption}
\begin{subsubcaption}
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure b--1}\label{b--1-x}
\end{subfigure}\qquad
\begin{subfigure}{5cm}
\includegraphics[width=\linewidth]{example-image}
\caption{caption of subfigure b--2}\label{b--2-x}
\end{subfigure}
\end{subsubcaption}
\caption{caption of entire figure}
\end{figure}
\end{document}
The “continuation” figure has labels c and d, while the following “new” one has a and b again.
\captionof{subfigure} was never meant to work correctly. (IMHO it should give an error message instead.) \captionof is only valid for main environments which offer captions, like figure.
If one need sub-captions for non-floating environments, I recommend using \captionsetup{type=...} instead:
\documentclass{article}
\usepackage{subcaption}
\begin{document}
\begin{figure}
\begin{subfigure}{\textwidth}
\caption{A}
\end{subfigure}
\end{figure}
\captionsetup[sub]{labelformat=parens}
\begingroup
\captionsetup{type=figure}
\begin{subfigure}{\textwidth}
\caption{B}
\end{subfigure}
\endgroup
\end{document}
BTW: I recommand using \captionsetup{type=...} plus \caption instead of \captionof anyway, even when used for main captions.
Best Answer
You can use
subfigurefor the subfigures and aminipagefor the caption:Use the optional argument for the environments to get the desired alignment, if required.