如何在 tikz 中创建包含图像、文本块和 tikzpictures 的图表，它们都通过箭头连接？

Question

我想绘制一个包含图像、两个文本块和一个 tikzpicture 的图表。更准确地说，它应该如下所示

Image -> Rectangle with text -> Tikzpicture -> Rectangle with text

可能，我想在每个箭头上方添加一些文本，并且在每个图像、矩形或 tikz 图像下方也添加一些文本。我希望该图像、矩形和 tikzpicture 具有大致相同的高度和宽度，而不会破坏图像和 tizkpicture 的纵横比。

这是草图。

我已经开始使用这个代码

\documentclass{article}

\usepackage{graphicx}
\usepackage{tikz}

\begin{document}
\begin{tikzpicture}

\node[inner sep=0pt] (russell) at (0,0)
    {\includegraphics[width=.25\textwidth]{my_image.pdf}};

\node[inner sep=0pt] (whitehead) at (5,0)
    {\includegraphics[width=.25\textwidth]{my_image.pdf}};

\draw[->,thick] (russell.mid east) -- (whitehead.mid west)
    node[midway,fill=white] {Principia Mathematica};

\end{tikzpicture}
\end{document}

但是，我不确定如何修改它以达到我的目的。此外，请注意，我希望箭头从图像中间开始（而不是从底部开始，就像运行上面的代码时那样，尽管我在mid那里使用）。那么，我该如何绘制上面描述的图表？它应该看起来很专业，因为我需要在研究论文中使用它。

PS：如果您可以假设每个块都可以被另一种类型的块替换（例如，带有文本的矩形最终可以被图像替换），那就太好了，因为我仍然不确定这是否是我的目的的最佳图表。

Answer 1

定义一些稍后要使用的命令：

• \getpicdimen：获取宽度和高度并默认保存到\picwidth和\picheight。星型版本表示使用节点名作为参数。
• \drawbox[<options>](name){width}{height}：绘制给定宽度和高度的矩形节点
• \fittobox[macro][macro]{width}{height}(shift){tikz code}：将图片放入给定宽度和高度的框中

下面的代码只是简单的例子，通过上面的命令，你最终可以定义一个环境equalfig，以便更方便的实现同样的效果。

\documentclass{article}
\usepackage{tikz}
\usepackage{geometry}
\geometry{margin=2cm, paperwidth=40cm}
\usepackage{graphicx}
\usepackage{mwe}
\usetikzlibrary{fit, calc, positioning}
\usepackage{xparse}
\NewDocumentCommand { \getpicdimen } { s O{\picwidth} O{\picheight} +m }
  {
    \begin{pgfinterruptboundingbox}
    \begin{scope}[local bounding box=pic, opacity=0]
      \IfBooleanTF {#1}
        { \node[inner sep=0pt, fit=(#4)] {}; }
        { #4 }
    \end{scope}
    \path ($(pic.north east)-(pic.south west)$);
    \end{pgfinterruptboundingbox}
    \pgfgetlastxy{#2}{#3}
  }

\NewDocumentCommand { \drawbox } { O{} D(){box} m m }
  {
    \node[inner sep=0pt, minimum width=#3, minimum height=#4, draw, #1] (#2) {};
  }

\ExplSyntaxOn
\fp_new:N \l__scale_fp
\NewDocumentCommand { \fittobox } { O{\picwidth} O{\picheight} m m D(){0, 0} +m }
  {
    \getpicdimen[#1][#2]{#6}
    \fp_compare:nTF
      {
        % pic ratio
        \dim_ratio:nn { #1 } { #2 } >
        % box ratio
        \dim_ratio:nn { #3 } { #4 }
      }
      % {}{}
      { \fp_set:Nn \l__scale_fp { 0.9*\dim_ratio:nn { #3 } { #1 } } }
      { \fp_set:Nn \l__scale_fp { 0.9*\dim_ratio:nn { #4 } { #2 } } }
    \begin{scope}[
      shift={($(#5) - \fp_use:N \l__scale_fp*(pic.center)$)},
      scale=\fp_use:N \l__scale_fp,
      ]
      #6
    \end{scope}
  }
\ExplSyntaxOff

\begin{document}
\centering
\begin{tikzpicture}
  \node[inner sep=0pt] (img) at (0,0)
    {\includegraphics[width=.2\textwidth]{example-image-a.pdf}};
  \getpicdimen*[\nodewidth][\nodeheight]{img}
  \typeout{aaa \nodewidth}
  \drawbox[right=.066\textwidth of img, rounded corners](box1){\nodewidth}{\nodeheight}
  \drawbox[right=.066\textwidth of box1, rounded corners](box2){\nodewidth}{\nodeheight}
  \drawbox[right=.066\textwidth of box2, rounded corners](box3){\nodewidth}{\nodeheight}
  % some text
  \node[text width=\dimexpr\nodewidth-8pt, align=justify] at (box1) {A very
    very very very very very very very very very very very very long text to
  show \ldots.};
  \node[text width=\dimexpr\nodewidth-8pt, align=justify] at (box3) {A very
    very very very very very very very very very very very very long text to
  show \ldots.};
  % arrow
  \tikzset{mynode/.style={midway, font=\small, above}}
  \tikzset{myarrow/.style={shorten <=2mm, shorten >=2mm}}
  \draw[->, myarrow] (img.east) -- (box1.west) node[mynode] {a1};
  \draw[->, myarrow] (box1.east) -- (box2) node[mynode] {a2};
  \draw[->, myarrow] (box2.east) -- (box3) node[mynode] {a3};
  \node[below=1em of img] {Image};
  \node[below=1em of box1] {Text 1};
  \node[below=1em of box2] {Pic code};
  \node[below=1em of box3] {Text 2};
  % pic code
  \tikzset{shorten >=1pt,->,draw=black!50, node distance=2.5cm,
    neuron/.style={circle,fill=black!25,minimum size=17pt,inner sep=0pt},
    input neuron/.style={neuron, fill=green!40},
    output neuron/.style={neuron, fill=red!40},
    hidden neuron/.style={neuron, fill=blue!40},
    pics/graph/.style={
      code={
        \draw[double=orange,white,thick,double distance=1pt,shorten >=0pt]
          plot[variable=\t,domain=-0.5:0.5,samples=51] ({\t},{#1});
      }
    },
    nodes={transform shape}
  }
  \fittobox{\nodewidth}{\nodeheight}(box2.center){
    % \node {a};
    % Input layer
    \foreach \name / \y in {1,...,2}
        \node[input neuron] (I-\name) at (0,0.5-2*\y) {$i\y$};

    % Hidden layer
    \foreach \name / \y in {1,...,5}
        \path[yshift=0.5cm]
            node[hidden neuron] (H-\name) at (2.5,-\y cm) {$h\y$};

    % Output node
    \node[output neuron, right of=H-3] (O) {$o$};

    % Connect every node in the input layer with every node in the hidden layer.
    \foreach \source in {1,...,2}
        \foreach \dest in {1,...,5}
            \path (I-\source) edge (H-\dest);

    % Connect every node in the hidden layer with the output layer
    \foreach \source in {1,...,5}
        \path (H-\source) edge (O);

    \begin{scope}[xshift=7cm]

      % Input layer
      \foreach \name / \y in {1,...,2}
          \node[input neuron] (I-\name) at (0,0.5-2*\y) {$i\y$};

      % Hidden layer
      \foreach \name / \y in {1,...,5}
          \path[yshift=0.5cm]
              node[hidden neuron] (H-\name) at (2.5,-\y cm) {$h\y$};

      % Output node
      \node[output neuron, right of=H-3] (O) {$o$};

      % Connect every node in the input layer with every node in the hidden layer.
      \foreach \source in {1,...,2}
          \foreach \dest in {1,...,5}
              \path (I-\source) edge (H-\dest);

      % Connect every node in the hidden layer with the output layer
      \foreach \source in {1,...,5}
          \path (H-\source) edge (O);
     \path (I-1) -- (H-1) pic[midway]{graph={-0.3+0.6*exp(-6*\t*\t)}};
     \path (I-2) -- (H-2) pic[midway]{graph={-0.3+0.6*exp(-25*(\t+0.15)*(\t+0.15))}};
    \end{scope}
  }
\end{tikzpicture}
\end{document}

Answer 2

就我个人而言，我喜欢使用scopes 来解决这类问题。

我为您准备了 MWE，它应该可以帮助您开始建立自己的身材。

\documentclass{article}

\usepackage{tikz}
\usetikzlibrary{calc}
\usepackage{graphicx}

\begin{document}
    \centering
    \begin{tikzpicture}
        \begin{scope}[xshift=0cm]
            \node[minimum width=3cm,minimum height=3cm,inner sep=0pt,draw] (imageA) {\includegraphics[width=3cm]{example-image-a}};
        \end{scope}
        
        \begin{scope}[xshift=4.5cm]
        \node[minimum width=3cm,minimum height=3cm,inner sep=0pt,draw] (textA) {\textbf{Sometext}};
        \end{scope}
        
        \begin{scope}[xshift=9cm]
        \node[minimum width=3cm,minimum height=3cm,inner sep=0pt,draw] (imageB) {\includegraphics[width=3cm]{example-image-b}};
        \end{scope}
        
        %finally, add arrows
        \draw[very thick,->,>=stealth] ($(imageA.east)+(0.2,0)$) -- ($(textA.west)+(-0.2,0)$) node [text width=2.5cm,midway,above,align=center,font=\tiny] {transform};
        \draw[very thick,->,>=stealth] ($(textA.east)+(0.2,0)$) -- ($(imageB.west)+(-0.2,0)$) node [text width=2.5cm,midway,above,align=center,font=\tiny] {use};
    \end{tikzpicture}
\end{document}

如果我没记错的话，还有一种更简单的方法可以不让箭头连接到节点，所以这更像是一种快速而肮脏的解决方案。

它看起来会像这样：

编辑：我在第三个范围内添加了一个 tikz 图片。

\documentclass{standalone}

\usepackage{tikz}
\usetikzlibrary{calc}
\usepackage{graphicx}

\begin{document}
    \centering
    \begin{tikzpicture}
        \begin{scope}[xshift=0cm]
            \node[minimum width=3cm,minimum height=3cm,inner sep=0pt,draw] (imageA) {\includegraphics[width=3cm]{example-image-a}};
        \end{scope}
        
        \begin{scope}[xshift=4.5cm]
        \node[minimum width=3cm,minimum height=3cm,inner sep=0pt,draw] (textA) {\textbf{Sometext}};
        \end{scope}
        
        \begin{scope}[xshift=9cm]
            \clip node[minimum width=3cm,minimum height=3cm,inner sep=0pt,draw] (tikzcode) {};
            \draw[fill=blue] (0,1.5) circle (1cm);  
        \end{scope}
        
        %finally, add arrows
        \draw[very thick,->,>=stealth] ($(imageA.east)+(0.2,0)$) -- ($(textA.west)+(-0.2,0)$) node [text width=2.5cm,midway,above,align=center,font=\tiny] {transform};
        \draw[very thick,->,>=stealth] ($(textA.east)+(0.2,0)$) -- ($(tikzcode.west)+(-0.2,0)$) node [text width=2.5cm,midway,above,align=center,font=\tiny] {use};
    \end{tikzpicture}
\end{document}

编辑2：按照评论中的要求使用神经网络。

\documentclass{standalone}

\usepackage{tikz}
\usetikzlibrary{calc}
\usepackage{graphicx}
\def\layersep{2.5cm}
\begin{document}
    \centering
    \begin{tikzpicture}
        
        \begin{scope}[xshift=0cm]
            \node[minimum width=3cm,minimum height=3cm,inner sep=0pt,draw] (imageA) {\includegraphics[width=3cm]{example-image-a}};
        \end{scope}
        
        \begin{scope}[xshift=4.5cm]
        \node[minimum width=3cm,minimum height=3cm,inner sep=0pt,draw] (textA) {\textbf{Sometext}};
        \end{scope}
        
        \begin{scope}[xshift=12cm,shorten >=1pt,->,draw=black!50, node distance=\layersep,
        neuron/.style={circle,fill=black!25,minimum size=17pt,inner sep=0pt},
        input neuron/.style={neuron, fill=green!40},
        output neuron/.style={neuron, fill=red!40},
        hidden neuron/.style={neuron, fill=blue!40},
        pics/graph/.style={code={\draw[double=orange,white,thick,double distance=1pt,shorten >=0pt]plot[variable=\t,domain=-0.5:0.5,samples=51] ({\t},{#1});}}]
        \clip node[minimum width=7cm,minimum height=6cm,inner sep=0pt] (tikzcode) {};
        \begin{scope}[xshift=-2.5cm,yshift=2.5cm]
        % Input layer
        \foreach \name / \y in {1,...,2}
        \node[input neuron] (I-\name) at (0,0.5-2*\y) {$i\y$};
        
        % Hidden layer
        \foreach \name / \y in {1,...,5}
        \path[yshift=0.5cm]
        node[hidden neuron] (H-\name) at (2.5,-\y cm) {$h\y$};
        
        % Output node
        \node[output neuron, right of=H-3] (O) {$o$};
        
        % Connect every node in the input layer with every node in the hidden layer.
        \foreach \source in {1,...,2}
        \foreach \dest in {1,...,5}
        \path (I-\source) edge (H-\dest);
        
        % Connect every node in the hidden layer with the output layer
        \foreach \source in {1,...,5}
        \path (H-\source) edge (O);
        
        
        % Input layer
        \foreach \name / \y in {1,...,2}
        \node[input neuron] (I-\name) at (0,0.5-2*\y) {$i\y$};
        
        % Hidden layer
        \foreach \name / \y in {1,...,5}
        \path[yshift=0.5cm]
        node[hidden neuron] (H-\name) at (2.5,-\y cm) {$h\y$};
        
        % Output node
        \node[output neuron, right of=H-3] (O) {$o$};
        
        % Connect every node in the input layer with every node in the hidden layer.
        \foreach \source in {1,...,2}
        \foreach \dest in {1,...,5}
        \path (I-\source) edge (H-\dest);
        
        % Connect every node in the hidden layer with the output layer
        \foreach \source in {1,...,5}
        \path (H-\source) edge (O);
        \path (I-1) -- (H-1) pic[midway]{graph={-0.3+0.6*exp(-6*\t*\t)}};
        \path (I-2) -- (H-2) pic[midway]{graph={-0.3+0.6*exp(-25*(\t+0.15)*(\t+0.15))}};
        \end{scope}
        \end{scope}
        
        %finally, add arrows
        \draw[very thick,->,>=stealth] ($(imageA.east)+(0.2,0)$) -- ($(textA.west)+(-0.2,0)$) node [text width=2.5cm,midway,above,align=center,font=\tiny] {transform};
        \draw[very thick,->,>=stealth] ($(textA.east)+(0.2,0)$) -- ($(tikzcode.west)+(-0.2,0)$) node [text width=2.5cm,midway,above,align=center,font=\tiny] {use};
    \end{tikzpicture}
\end{document}

看起来像这样：

您必须对事物的长度和尺寸进行一些调整才能获得您想要的东西，但原则上这应该可行。

Answer 3

可能的解决方案：

\documentclass{article}

\usepackage{graphicx}
\usepackage{tikz}

\begin{document}
\begin{tikzpicture}

\node[inner sep=0pt] (russell) at (0,0)
    {\includegraphics[width=.25\textwidth]{example-image-a.pdf}};

\node[inner sep=0pt, text width=.25\textwidth, align=left,
    draw, inner sep=5pt] (whitehead) at (5,0)
    {A lot of text here, but not so much so that I can use
    \texttt{lipsum} so writing nonsense.};

\draw[->,thick] (russell.east) -- (whitehead.west)
    node[midway,above, fill=white, inner sep=0pt, outer sep=5pt] {Principia};

\begin{scope}[xshift=9cm, local bounding box=mybbox]
    \draw (-1,-1) rectangle (1,1);
    \draw (0,0) -- (.3,.0) circle[radius=0.5];
\end{scope}

\draw[->,thick] (whitehead.east) -- (mybbox.west)
    node[midway,above, fill=white, inner sep=0pt, outer sep=5pt] {Really?};
\end{tikzpicture}
\end{document}

图片的主要技巧是保持其居中，y=0 因为您对其他框也做了同样的操作，所以我使用了“边界矩形”技巧。您可以使用以下方法使其不可见：

    \path[use as bounding box]  (-1,-1) rectangle (1,1);

而不是最后范围内的显式矩形。