精细的子标题图例放置

Question

我在尝试将子标题图例放在图形顶部时遇到了麻烦。无论我做什么，它们都会出现在中间。此代码重现了该问题：

\documentclass[draft, oneside, a4paper, onecolumn, 11pt]{article}

\usepackage{graphicx}
\usepackage{subcaption}
\usepackage[export]{adjustbox}
\usepackage[usenames,dvipsnames,svgnames,table]{xcolor} % use color


\begin{document}

\begin{figure}[!ht]
  \adjustbox{minipage=1em,valign=t}{\subcaption{} \label{fig:fig1}}%
   \begin{subfigure}[c]{0.24\textwidth}
   \centering
    \includegraphics[scale=1.]{fig1.pdf}
  \end{subfigure}
  \adjustbox{minipage=1em,valign=t}{\subcaption{} \label{fig:fig2}}%
   \begin{subfigure}[c]{0.24\textwidth}
   \centering
    \includegraphics[scale=1.]{fig2.pdf}
  \end{subfigure}
  \adjustbox{minipage=0em,valign=t}{\subcaption{} \label{fig:fig3}}%
   \begin{subfigure}[c]{0.4\textwidth}
   \centering
      \includegraphics[scale=1.]{fig3.pdf}  \\
  \end{subfigure}
\end{figure}

\end{document}

导致

我究竟做错了什么？

Answer 1

假设您想要将子图的中心对齐在一起，但将标题的顶部与子图的顶部对齐，则需要首先使用保存框确定子图的高度。

顺便说一句，没有标题的子图是一个小页面。

\documentclass[draft, oneside, a4paper, onecolumn, 11pt]{article}

\usepackage{graphicx}
\usepackage{subcaption}
\usepackage{adjustbox}
\usepackage[usenames,dvipsnames,svgnames,table]{xcolor} % use color


\begin{document}

\begin{figure}[!ht]
  \sbox0{\begin{subfigure}[c]{0.24\textwidth}
   \centering
    \includegraphics[scale=1.]{fig1.pdf}
  \end{subfigure}}%
  \adjustbox{minipage=1em,raise=\dimexpr\ht0-\height}{\subcaption{} \label{fig:fig1}}%
  \usebox0
%
  \sbox0{\begin{subfigure}[c]{0.24\textwidth}
   \centering
    \includegraphics[scale=1.]{fig2.pdf}
  \end{subfigure}}%
  \adjustbox{minipage=1em,raise=\dimexpr\ht0-\height}{\subcaption{} \label{fig:fig2}}%
  \usebox0
%
  \sbox0{\begin{subfigure}[c]{0.4\textwidth}
   \centering
      \includegraphics[scale=1.]{fig3.pdf}  \\
  \end{subfigure}}%
  \adjustbox{minipage=1em,raise=\dimexpr\ht0-\height}{\subcaption{} \label{fig:fig3}}%
  \usebox0
\end{figure}

\end{document}

---

如果想要对齐图像的顶部，可以使用一种更简单的方法。

\documentclass[draft, oneside, a4paper, onecolumn, 11pt]{article}

\usepackage{graphicx}
\usepackage{subcaption}
\usepackage{adjustbox}
\usepackage[usenames,dvipsnames,svgnames,table]{xcolor} % use color

\begin{document}

\begin{figure}[!ht]
  \adjustbox{minipage=2em,raise=-\height}{\subcaption{} \label{fig:fig1}}%
  \raisebox{-\height}{\includegraphics[scale=1.]{fig1.pdf}}
%
  \adjustbox{minipage=2em,raise=-\height}{\subcaption{} \label{fig:fig2}}%
  \raisebox{-\height}{\includegraphics[scale=1.2]{fig2.pdf}}
%
  \adjustbox{minipage=2em,raise=-\height}{\subcaption{} \label{fig:fig3}}%
  \raisebox{-\height}{\includegraphics[scale=1.]{fig3.pdf}}
\end{figure}

\end{document}