如何强制标题在图像下方对齐？

Question

在这个代码示例中，我怎样才能强制标题与其上方图像的左角对齐并且不比图像宽？

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage{caption}        % for source
\usepackage{float}          
\usepackage[export]{adjustbox} % valign
\newcommand{\imagesource}[1]{{\scriptsize Source: #1}}
\usepackage[export]{adjustbox}
    
\begin{document}

\begin{figure}[H]
\centering
    \begin{minipage}[t]{.475\textwidth} % [t][][b]
        \begin{tabular}[t]{ @{} r @{} }
        \includegraphics[width = .9\linewidth,valign=t]{example-image} \\
        \imagesource{(EU 2020)}
       \end{tabular}
    \end{minipage}\hfill
    \begin{minipage}[t]{.475\textwidth}
        \begin{tabular}[t]{ @{} r @{} }
        \includegraphics[width = .7\linewidth,valign=t]{example-image} \\
        \imagesource{(IEA 2019)}
        \end{tabular}
    \end{minipage}
     \begin{minipage}[t]{.475\textwidth}
       \caption{This is a caption for the first image.}\label{fig:image1}
     \end{minipage}\hfill
     \begin{minipage}[t]{.475\textwidth}
        \caption{This is a caption for the second image.}\label{fig:image2}
     \end{minipage}
\end{figure}
\end{document}

Answer 1

像这样？

使用 oftabular代替minipages：

\documentclass{article}
\usepackage{graphicx}
\usepackage{caption}           % for source
\usepackage[export]{adjustbox} % valign
\newcommand{\imagesource}[1]{{\smallskip\hfill\scriptsize Source: #1}}

\begin{document}

\begin{figure}[ht]
\centering
\setkeys{Gin}{width=\linewidth}
    \begin{tabular}{p{0.45\linewidth} p{0.34\linewidth}}
\includegraphics[valign=t]{example-image}

\imagesource{(EU 2020)}
    & 
\includegraphics[valign=t]{example-image}

\imagesource{(IEA 2019)}    \\
\caption{This is a caption for the first image.}
\label{fig:image1}
    &   \caption{This is a caption for the second image.}
        \label{fig:image2}
    \end{tabular}
\end{figure}

\end{document}

附录： 您可能喜欢使用以下替代解决方案copyrightbox：

\documentclass{article}
\usepackage{graphicx}
\usepackage{caption}        % for source
\newcommand{\imagesource}[1]{\hfill\scriptsize Source: #1}
\usepackage{copyrightbox}
\makeatletter
\renewcommand{\CRB@setcopyrightparagraphstyle}{\raggedleft} % new
\makeatother

\begin{document}

\begin{figure}[ht]
\centering
\setkeys{Gin}{width=\linewidth}
    \begin{tabular}{p{0.45\linewidth}p{0.34\linewidth}}
\copyrightbox[b]{\includegraphics{example-image-duck}}{(EU 2020)}
    & 
\copyrightbox[b]{\includegraphics{example-image-duck}}{(IEA 2019)}    
    \\[-3ex]
\caption{This is a caption for the first image.}
\label{fig:image1}
    &   \caption{This is a caption for the second image.}
        \label{fig:image2}
    \end{tabular}
\end{figure}

\end{document}

Answer 2

以下 MWE 允许重现原始问题中显示的输出。

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage{caption}        % for source
\usepackage{float}          
\usepackage[export]{adjustbox} % valign
\newcommand{\imagesource}[1]{{\scriptsize Source: #1}}
\usepackage[export]{adjustbox}

\usepackage{fullpage} % full wide page, small margins
\begin{document}

\begin{figure}[H]
\centering
    \begin{minipage}[t]{.475\textwidth} % [t][][b]
        \begin{tabular}[t]{ @{} r @{} }
        \includegraphics[width = .9\linewidth,valign=t]{example-image} \\
        \imagesource{(EU 2020)}
       \end{tabular}
    \end{minipage}\hfill
    \begin{minipage}[t]{.475\textwidth}
        \begin{tabular}[t]{ @{} r @{} }
        \includegraphics[width = .7\linewidth,valign=t]{example-image} \\
        \imagesource{(IEA 2019)}
        \end{tabular}
    \end{minipage}
     \begin{minipage}[t]{.475\textwidth}
       \caption{This is a caption for the first image.}\label{fig:image1}
     \end{minipage}\hfill
     \begin{minipage}[t]{.475\textwidth}
        \caption{This is a caption for the second image.}\label{fig:image2}
     \end{minipage}
\end{figure}
\end{document}

正如已经猜测的那样在上一个问题的评论中，此行为是由于该包自动将仅跨越一行的字幕水平居中。您可以使用caption全局（在序言中）或本地（在相应的环境中）关闭此行为。这将导致预期的输出：figure\captionsetup{singlelinecheck=false}