当较长的副标题导致错位时，如何对齐图形

Question

我正在使用tabular环境minipage将 4 个图形以 2 x 2 布局对齐。虽然这四个图形大小相同，但子标题的长度不同，这导致图形错位。有什么方法可以纠正这个问题吗？

以下是我正在使用的代码：

\documentclass[compress]{beamer} 
\usetheme{Warsaw}
\usepackage{setspace} 
\usepackage[hang,footnotesize]{caption}
\usepackage[subrefformat=parens]{subcaption}
\captionsetup{compatibility=false}

\setbeamercolor{page number in head/foot}{fg=white}
\setbeamerfont{page number in head/foot}{size=\tiny}
\setbeamertemplate{page number in head/foot}[totalframenumber]

\title[]{Beamer title}
\author[]{Author name}

\begin{document}
\begin{frame}{Frame Title}
    \begin{figure}
        \begin{tabular}{cc}
            % Figure 1
            \begin{minipage}{0.45\hsize}
                \centering 
                \includegraphics[keepaspectratio, scale=0.3]{sample.jpg}
                \subcaption{Subcaption}
            \end{minipage}
            % Figure 2
            \begin{minipage}{0.45\linewidth}
                \centering 
                \includegraphics[keepaspectratio, scale=0.3]{sample.jpg}
                \subcaption{Longer longer longer longer longer longer longer subcaption}
            \end{minipage}
            \\
            % Figure 3
            \begin{minipage}{0.45\hsize}
                \centering 
                \includegraphics[keepaspectratio, scale=0.3]{sample.jpg}
                \subcaption{Longer longer longer longer longer longer longer subcaption}
            \end{minipage}
            % Figure 4
            \begin{minipage}{0.45\hsize}
                \centering 
                \includegraphics[keepaspectratio, scale=0.3]{sample.jpg}
                \subcaption{Subcaption}
            \end{minipage}
        \end{tabular}
    \end{figure}
\end{frame}
\end{document}

Answer 1

您可以使用\begin{minipage}[t]它们顶部对齐（或者更简单地删除minipage并使用p{.45\textwidth}列而不是c

Answer 2

使用\subcaptionbox（手册第 2 部分subcaption）。

该\subcaptionbox命令排版给定的内容和标题。它会自动根据第一行标题对齐子图和子表。

\documentclass[compress]{beamer} 
\usetheme{Warsaw}
\usepackage{setspace} 
\usepackage[hang,footnotesize]{caption}
\usepackage[subrefformat=parens]{subcaption}
\captionsetup{compatibility=false}

\setbeamercolor{page number in head/foot}{fg=white}
\setbeamerfont{page number in head/foot}{size=\tiny}
\setbeamertemplate{page number in head/foot}[totalframenumber]

\title[]{Beamer title}
\author[]{Author name}

\begin{document}
\begin{frame}{Frame Title}

\begin{figure}
  \begin{tabular}{@{}cc@{}}
  % Figure 1
  \subcaptionbox{Subcaption}[0.45\textwidth][c]{%
    \includegraphics[width=0.6\linewidth]{example-image}%
  } &
  % Figure 2
  \subcaptionbox{%
    Longer longer longer longer longer longer longer subcaption%
  }[0.45\textwidth][c]{%
    \includegraphics[width=0.6\linewidth]{example-image}%
  } \\
  % Figure 3
  \subcaptionbox{%
    Longer longer longer longer longer longer longer subcaption%
  }[0.45\textwidth][c]{%
    \includegraphics[width=0.6\linewidth]{example-image}%
  } &
  % Figure 4
  \subcaptionbox{Subcaption}[0.45\textwidth][c]{%
    \includegraphics[width=0.6\linewidth]{example-image}%
  }
  \end{tabular}
\end{figure}

\end{frame}

\end{document}