有没有办法划分一个图形来引用该图形的子部分？

Question

我有一个由多个小图组成的图形。我不想为了方便而将大图拆分开，再用 latex 将其拼凑在一起。相反，我想用 cleverref 引用大图的每个子部分。我将用 tikz 在每张图片中放置一个节点，将每个子图像命名为 (a)、(b)、... 我如何使用 cleverref 引用此子图像，以便引用看起来像这样：图 1.1a 整个引用应超链接到图像。

我已经在使用以下重要的包：

\usepackage{caption}
\usepackage{subcaption}
\captionsetup[subfigure]{subrefformat=simple,labelformat=simple}
\renewcommand\thesubfigure{\alph{subfigure}}

我的 cleverref 选项是：

%reference packages
\usepackage[colorlinks=false]{hyperref}
\usepackage[nameinlink]{cleveref}
\crefdefaultlabelformat{#2#1#3}
%options for equations
\creflabelformat{equation}{#2#1#3}
\crefformat{equation}{#2Eq.~#1#3}
\Crefformat{equation}{#2Equation~#1#3}
\crefmultiformat{equation}{#2Eqs.~#1#3}%
{ and~#2#1#3}{, #2#1#3}{ and~#2#1#3}
%options for enumerations
\creflabelformat{enumi}{#2(#1)#3}
\crefformat{enumi}{#2(#1)#3}
\Crefformat{enumi}{#2(#1)#3}
%options for figures
\creflabelformat{figure}{#2#1#3}
\crefformat{figure}{#2Fig.~#1#3}
\Crefformat{figure}{#2Figure~#1#3}
\crefmultiformat{figure}{#2Fiqs.~#1#3}%
{ and~#2#1#3}{, #2#1#3}{ and~#2#1#3}

Answer 1

我会选择剪辑图像并将其包含四次（这不会影响最终的 PDF 大小，因为资源只会加载一次）。使用\clipbox*该trimclip包，您甚至不需要知道图像大小。

\documentclass{article}

\usepackage{subcaption,graphicx,trimclip,hyperref,cleveref}

\begin{document}

\begin{figure}
\centering

\subcaptionbox{Top left\label{tl}}{%
  \clipbox*{0 {.5\height} {.5\width} {1\height}}{%
    \includegraphics[width=8cm]{duck}%
  }%
}\qquad
\subcaptionbox{Top right\label{tr}}{%
  \clipbox*{{.5\width} {.5\height} {1\width} {1\height}}{%
    \includegraphics[width=8cm]{duck}%
  }%
}

\medskip

\subcaptionbox{Bottom left\label{bl}}{%
  \clipbox*{0 0 {.5\width} {.5\height}}{%
    \includegraphics[width=8cm]{duck}%
  }%
}\qquad
\subcaptionbox{Bottom right\label{br}}{%
  \clipbox*{{.5\width} 0 {1\width} {.5\height}}{%
    \includegraphics[width=8cm]{duck}%
  }%
}

\caption{A split duck}

\end{figure}

\end{document}

一个更完整的示例，显示引用符合预期。

\documentclass{article}

\usepackage{subcaption,graphicx,trimclip}
\usepackage[colorlinks]{hyperref}
\usepackage[nameinlink]{cleveref}

\captionsetup[subfigure]{subrefformat=simple,labelformat=simple}
\renewcommand\thesubfigure{\alph{subfigure}}

\crefdefaultlabelformat{#2#1#3}
%options for equations
\creflabelformat{equation}{#2#1#3}
\crefformat{equation}{#2Eq.~#1#3}
\Crefformat{equation}{#2Equation~#1#3}
\crefmultiformat{equation}{#2Eqs.~#1#3}%
{ and~#2#1#3}{, #2#1#3}{ and~#2#1#3}
%options for enumerations
\creflabelformat{enumi}{#2(#1)#3}
\crefformat{enumi}{#2(#1)#3}
\Crefformat{enumi}{#2(#1)#3}
%options for figures
\creflabelformat{figure}{#2#1#3}
\crefformat{figure}{#2Fig.~#1#3}
\Crefformat{figure}{#2Figure~#1#3}
\crefmultiformat{figure}{#2Fiqs.~#1#3}%
{ and~#2#1#3}{, #2#1#3}{ and~#2#1#3}

\begin{document}

A reference to \cref{global}, then to
\cref{tl}, \cref{tr}, \cref{bl} and \cref{br}.

\begin{figure}[htp]
\centering

\subcaptionbox{\label{tl}}{%
  \clipbox*{0 {.5\height} {.5\width} {1\height}}{%
    \includegraphics[width=8cm]{duck}%
  }%
}\qquad
\subcaptionbox{\label{tr}}{%
  \clipbox*{{.5\width} {.5\height} {1\width} {1\height}}{%
    \includegraphics[width=8cm]{duck}%
  }%
}

\medskip

\subcaptionbox{\label{bl}}{%
  \clipbox*{0 0 {.5\width} {.5\height}}{%
    \includegraphics[width=8cm]{duck}%
  }%
}\qquad
\subcaptionbox{\label{br}}{%
  \clipbox*{{.5\width} 0 {1\width} {.5\height}}{%
    \includegraphics[width=8cm]{duck}%
  }%
}

\caption{A split duck}\label{global}

\end{figure}


\end{document}

以下代码也将创建链接而不剪切图形；添加

\newcommand{\labelphantom}[1]{%
  \parbox{0pt}{\phantomsubcaption\label{#1}}%
}

在你的序言中，然后输入

A reference to \cref{global2}, then to
\cref{tl2}, \cref{tr2}, \cref{bl2} and \cref{br2}.

\begin{figure}[htp]
\centering

\labelphantom{tl2}%
\labelphantom{tr2}%
\labelphantom{bl2}%
\labelphantom{br2}%
\includegraphics[width=8cm]{duck}%

\caption{A split duck}\label{global2}

\end{figure}