在 Beamer 中，如何為 tikz 節點內的圖形添加標題？

Question

我以為我會找到答案這裡，但該解決方案似乎在這種特殊情況下不起作用...

一般來說：如何在 tikz 節點內放置圖形的標題？我製作了以下 MWE，但這不是我在演示中使用的佈局，只是隨機的佈局，所以我需要一個通用的解決方案，而不僅僅是這個示例...

在這個例子中，我只想在圖B的正下方放置一個標題，我該怎麼做？

微量元素：

\documentclass{beamer}

\usepackage{tikz}
\usetikzlibrary{positioning,calc}
\usepackage[labelformat=empty,font=scriptsize,skip=0pt,
justification=raggedright,singlelinecheck=false]{caption}

\begin{document}

\begin{frame}
    \begin{figure}
    \begin{tikzpicture}[remember picture, every node/.style={inner sep=0,outer sep=0}]

    \node[anchor=west] (A) at (0,0) {\includegraphics[width=2.25cm]{example-image-a}};

    \node[right=0.75cm of A.east, anchor=west] (B) {\includegraphics[width=2.25cm]{example-image-b}
        %\captionof{figure}{my caption here}%I was hoping this would work...
    };
    \node[below=\belowcaptionskip of B,text width=\linewidth]
    {\captionof{figure}{my caption here}};%And this doesn't work either...

    \node [right=0.75cm of B.east, anchor=west] (C) {\includegraphics[width=2.25cm]{example-image-c}};

    \node [below=0.75cm of A.south east, anchor=north west] (D) {\includegraphics[width=2.25cm]{example-image}};

    \node [right=0.75cm of D.east, anchor=west] (E) {\includegraphics[width=2.25cm]{example-image}};

    \node [right=0.75cm of E.east, anchor=west] (F) {\includegraphics[width=2.25cm]{example-image}};
    \end{tikzpicture}
    \end{figure}
\end{frame}

\end{document}

生產：

Answer 1

在一種情況下，當你的標題只有一行時，你可以在不使用caption套件和figure環境的情況下獲得所需的結果：

\documentclass{beamer}
\usepackage{lmodern,tikz}
\usetikzlibrary{positioning}

\begin{document}
\begin{frame}
    \begin{center}
    \begin{tikzpicture}[node distance=2mm and 5mm]
\node              (A)  {\includegraphics[width=2.25cm]{example-image-a}};
\node [right=of A] (B)  {\includegraphics[width=2.25cm]{example-image-b}};
\node [right=of B] (C)  {\includegraphics[width=2.25cm]{example-image-c}};
    \node (capt) [below=of B,text width=\linewidth, align=center,font=\scriptsize]
                        {my caption here};
\node [below=of A |- capt.south] (D) {\includegraphics[width=2.25cm]{example-image}};
\node [right=of D] (E)  {\includegraphics[width=2.25cm]{example-image}};
\node [right=of E] (F)  {\includegraphics[width=2.25cm]{example-image}};
    \end{tikzpicture}
    \end{center}
\end{frame}
\end{document}

但是，您可以將 TikZ 圖片分成兩部分：

\documentclass{beamer}
\usepackage{lmodern,tikz}
\usetikzlibrary{positioning}

\begin{document}
\begin{frame}
    \begin{figure}\centering
    \begin{tikzpicture}[node distance=2mm and 5mm]
\node              (A)  {\includegraphics[width=2.25cm]{example-image-a}};
\node [right=of A] (B)  {\includegraphics[width=2.25cm]{example-image-b}};
\node [right=of B] (C)  {\includegraphics[width=2.25cm]{example-image-c}};
    \end{tikzpicture}
\caption{my caption here}
    \begin{tikzpicture}[node distance=2mm and 5mm]
\node              (D) {\includegraphics[width=2.25cm]{example-image}};
\node [right=of D] (E)  {\includegraphics[width=2.25cm]{example-image}};
\node [right=of E] (F)  {\includegraphics[width=2.25cm]{example-image}};
    \end{tikzpicture}
    \end{figure}
\end{frame}
\end{document}

如果你不喜歡Figure在標題處有標籤，你只需要caption相應地設定模板，例如添加到序言中：

\setbeamerfont{caption}{size=\scriptsize}
\setbeamertemplate{caption}{\insertcaption\par}

附錄： 我不清楚 TikZ 節點的用途是什麼。節點中的圖像可以像以前一樣以相同的框架形式排列，而無需它們：

\documentclass{beamer}
\setbeamerfont{caption}{size=\scriptsize}
\setbeamertemplate{caption}{\insertcaption\par}

\begin{document}
\begin{frame}
    \begin{figure}\centering
\includegraphics[width=2.25cm]{example-image-a}\hfil
\includegraphics[width=2.25cm]{example-image-b}\hfil
\includegraphics[width=2.25cm]{example-image-c} 

\caption{my caption here}

\includegraphics[width=2.25cm]{example-image}\hfil
\includegraphics[width=2.25cm]{example-image}\hfil
\includegraphics[width=2.25cm]{example-image}
    \end{figure}
\end{frame}
\end{document}

框架的形象和以前一樣，但是程式碼更簡單簡潔。

Answer 2

使用包justification=centering中的選項caption。

\documentclass{beamer}
\usepackage{lmodern,tikz}
\usetikzlibrary{positioning,calc}
\usepackage[labelformat=empty,font=scriptsize,skip=0pt,
justification=centering,singlelinecheck=false]{caption}

\begin{document}
\begin{frame}
    \begin{figure}\centering    
    \begin{tikzpicture}
    \node [anchor=west] (A) at (0,0) {\includegraphics[width=2.25cm]{example-image-a}};
    \node [right=0.75cm of A.east, anchor=west] (B) {\includegraphics[width=2.25cm]{example-image-b}};
    \node [below=\belowcaptionskip of B,text width=\linewidth]{\captionof{figure}{my caption here}};    
    \node [right=0.75cm of B.east, anchor=west] (C) {\includegraphics[width=2.25cm]{example-image-c}};
    \node [below=0.75cm of A.south, anchor=north] (D) {\includegraphics[width=2.25cm]{example-image}};
    \node [right=0.75cm of D.east, anchor=west] (E) {\includegraphics[width=2.25cm]{example-image}};
    \node [right=0.75cm of E.east, anchor=west] (F) {\includegraphics[width=2.25cm]{example-image}};    
    \end{tikzpicture}
    \end{figure}
\end{frame}
\end{document}