子图到子图标题

Question

我是 LaTeX 新手。我不确定如何表达我的问题。但我会以易于理解的方式表达。

我想制作一个子图，但标题必须是

caption of subfigure a-1 caption of subfigure a-2

caption of subfigure b-1 caption of subfigure b-2

                 `caption  of entire figure`

我尝试使用子图，但不断出现a,b,c,d，但我需要按上面提到的方式命名它们 (a-1、a-2、b-1、b-2)。 在我的情况下，子图可能位于不同的页面中。

Answer 1

subequations这使用了与相同的想法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}

编辑

如果更多图形环境使用 ，则上述代码实际上不起作用subsubcaption。这里有一个解决方法，尝试与 配合使用\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}

“延续”图形有标签 c 和 d，而接下来的“新”图形又有 a 和 b。