在子图和其子标题之间添加虚线垂直线

Question

类似如下： 如何在图像之间设置彩色虚线垂直规则

我想在两个子图之间放置一条虚线。我可以使用 \vrule 来实现，但是我对虚线所做的任何操作都会停止在图形底部，而不是延伸到子标题。我在图形中使用 subcaption 包。

以下是目前的代码：

\documentclass{article}
\usepackage{subcaption,graphicx}
\usepackage{tikz}
\usepackage{caption}
\usepackage{subcaption}
\usepackage[multidot]{grffile}
\usepackage{calc}

\begin{document}

\begin{figure}
    \centering
    \subcaptionbox{This is the first subcaption
        \label{fig:solid1}}
    {\includegraphics[width=0.2\textwidth]{example-image-a}}
    \hspace{2pt}
    \unskip\vrule
    \hspace{2pt}
    \subcaptionbox{Get your second subcaptions here
        \label{fig:solid2}}
    {\includegraphics[width=0.2\textwidth]{example-image-a}}
    \caption{This separator has the right height, but isn't dashed.}
    \label{fig:solid}
\end{figure}

\begin{figure}
    \centering
    \def\testBox{\subcaptionbox{This is the first subcaption
            \label{fig:dash1}}
        {\includegraphics[width=0.2\textwidth]{example-image-b}}}
    \newlength\figHeight
    \setlength\figHeight{\heightof{\testBox}}
    \testBox
    \hspace{3pt}
    \tikz{\draw[densely dashed, thick](0,\figHeight) -- (0,0);}
    \hspace{1pt}
    \subcaptionbox{Get your second subcaptions here
        \label{fig:dash2}}
    {\includegraphics[width=0.2\textwidth]{example-image-b}}
    \caption{This separator is dashed, but is too short.}
    \label{fig:dashes}
\end{figure}

\end{document}

另外，为什么我需要有不同的 \hspace 距离来使虚线居中？

Answer 1

使用nicematrix包将封装成subtitle boxes表格形式，然后使用\Block命令绘制虚线规则。

\Block[borders={right,tikz=dashed}]{1-1}{}将仅在第一个节点的右侧绘制虚线规则。

需要加载 Tikz 包。我会编译两次。

\documentclass{article}

\usepackage{subcaption,graphicx}

\usepackage{tikz}%<<<<<<<<<<<<<<
\usepackage{nicematrix}%<<<<<<<<<<<<<<

\begin{document}
\begin{figure}
    \centering 
    \begin{NiceTabular}{cc}
        \Block[borders={right,tikz={densely dashed, thick}}]{1-1}{}%draw the dashed rule only on the right side of the first node
        \subcaptionbox{This is the first subcaption \label{fig:solid1}} {\includegraphics[width=0.25\linewidth]{example-image-b}}&
        \subcaptionbox{Get your second subcaptions here \label{fig:solid2}}{\includegraphics[width=0.25\linewidth]{example-image-b}}
    \end{NiceTabular}   
\end{figure}
    
\end{document}

Answer 2

您可以使用arydshln

\documentclass{article}
\usepackage{subcaption,graphicx}
\usepackage{caption}
\usepackage{subcaption}
\usepackage{arydshln}

\begin{document}

\begin{figure}[htp]
\centering

\begin{tabular}{@{} c : c @{}}
  \subcaptionbox{This is the first subcaption\label{fig:solid1}}
    {\includegraphics[width=0.2\textwidth]{example-image-a}}
&
  \subcaptionbox{Get your second subcaptions here\label{fig:solid2}}
    {\includegraphics[width=0.2\textwidth]{example-image-a}}
\end{tabular}

\caption{This separator has the right height, but isn't dashed.}
\label{fig:solid}

\end{figure}

\end{document}

但我看不出这如何改善排版。