垂直方向的子图“行名称”

Question

如何为子图创建垂直方向的“行名”？我试图在这里形象化我的想法：

以下是使用 subcaption 包在更大的图形环境中获取子图的图像代码：

\documentclass{article}
\usepackage{graphicx}
\usepackage{subcaption}
\pagestyle{empty}
\begin{document}
\begin{figure}[ht] 
  \begin{subfigure}[b]{0.5\linewidth}
    \centering
    \includegraphics[width=0.75\linewidth]{example-image-a} 
    \vspace{4ex}
  \end{subfigure}%% 
  \begin{subfigure}[b]{0.5\linewidth}
    \centering
    \includegraphics[width=0.75\linewidth]{example-image-a} 
    \vspace{4ex}
  \end{subfigure}
  \begin{subfigure}[b]{0.5\linewidth}
    \centering
    \includegraphics[width=0.75\linewidth]{example-image-b} 
    \vspace{4ex}
  \end{subfigure}%%
  \begin{subfigure}[b]{0.5\linewidth}
    \centering
    \includegraphics[width=0.75\linewidth]{example-image-b} 
    \vspace{4ex}
  \end{subfigure}%% 
  \caption{Illustration of various images}
  \label{fig7} 
\end{figure}
\end{document}

Answer 1

三个选项：

1. 使用tabular*宽度等于\textwidth和m{<length>}列的。

2. 使用adjustbox包裹。

3. 将其中一张图片装箱来测量其高度（假设所有四张图像具有相同的高度）。

在这三种情况下，标签都放置在 内\rotatebox。代码如下：

\documentclass{article}
\usepackage[paperheight=35cm,vmargin=2cm]{geometry}% just for the example
\usepackage{graphicx}
\usepackage{subcaption}
\usepackage{adjustbox}
\usepackage{array}

\pagestyle{empty}

% Measure the image height
\newsavebox\mybox
\savebox\mybox{%
  \begin{minipage}[t]{0.48\linewidth}
    \includegraphics[width=0.75\linewidth]{example-image-a}
  \end{minipage}%
}
\newlength\ImageHt
\setlength\ImageHt{\ht\mybox}

\begin{document}

\begin{figure}[!t]
  \begin{tabular*}{\textwidth}{
    @{}m{0.5cm}
    @{}m{\dimexpr0.5\textwidth-0.25cm\relax}
    @{}m{\dimexpr0.5\textwidth-0.25cm\relax}
    @{}}
  \rotatebox{90}{row number 1}
  & \begin{subfigure}[b]{\linewidth}
      \centering
      \includegraphics[width=0.75\linewidth]{example-image-a} 
      \end{subfigure}  
  & \begin{subfigure}[b]{\linewidth}
      \centering
      \includegraphics[width=0.75\linewidth]{example-image-a} 
      \end{subfigure} \\
  \rotatebox{90}{row number 2} 
  & \begin{subfigure}[b]{\linewidth}
      \centering
      \includegraphics[width=0.75\linewidth]{example-image-b} 
    \end{subfigure}
  & \begin{subfigure}[b]{\linewidth}
      \centering
      \includegraphics[width=0.75\linewidth]{example-image-b} 
      \end{subfigure}
  \end{tabular*} 
  \caption{Illustration of various images}
  \label{fig7} 
\end{figure}

\begin{figure}[!ht]
  \rotatebox[origin=c]{90}{\makebox[\ImageHt]{row number 1}}% 
  \begin{subfigure}{0.48\linewidth}
    \centering
    \includegraphics[width=0.75\linewidth]{example-image-a} 
  \end{subfigure}%% 
  \begin{subfigure}{0.48\linewidth}
    \centering
    \includegraphics[width=0.75\linewidth]{example-image-a} 
  \end{subfigure}\par\bigskip
  \rotatebox[origin=c]{90}{\makebox[\ImageHt]{row number 2}}% 
  \begin{subfigure}{0.48\linewidth}
    \centering
    \includegraphics[width=0.75\linewidth]{example-image-b} 
  \end{subfigure}%%
  \begin{subfigure}{0.48\linewidth}
    \centering
    \includegraphics[width=0.75\linewidth]{example-image-b} 
  \end{subfigure}%% 
  \caption{Illustration of various images}
  \label{fig8} 
\end{figure}

\begin{figure}[!b]
  \rotatebox[origin=c]{90}{\makebox[\ImageHt]{row number 1}}% 
  \begin{subfigure}{0.48\linewidth}
    \centering
    \includegraphics[width=0.75\linewidth]{example-image-a} 
  \end{subfigure}%% 
  \begin{subfigure}{0.48\linewidth}
    \centering
    \includegraphics[width=0.75\linewidth]{example-image-a} 
  \end{subfigure}\par\bigskip
  \rotatebox[origin=c]{90}{\makebox[\ImageHt]{row number 2}}% 
  \begin{subfigure}{0.48\linewidth}
    \centering
    \includegraphics[width=0.75\linewidth]{example-image-b} 
  \end{subfigure}%%
  \begin{subfigure}{0.48\linewidth}
    \centering
    \includegraphics[width=0.75\linewidth]{example-image-b} 
  \end{subfigure}%% 
  \caption{Illustration of various images}
  \label{fig8} 
\end{figure}

\end{document}

结果：