在Tikz中在一个节点前输入一个箭头的方法

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英文:

How to input an arrow before a node in Tikz

问题

目前，这是我有的部分代码，我不知道如何在节点前面输入一个箭头，带有“dr above”。以下是翻译好的部分：

  1. \tikzstyle{Box} = [rectangle, rounded corners, 
  2. minimum width=1.25cm, 
  3. minimum height=1.25cm,
  4. text centered, 
  5. draw=black, fill=yellow!30]
  7. \tikzstyle{arrow} = [thick,->,>=stealth]
  9. \begin{center}
  10.     \begin{figure}
  11.         \centering
  12.     \begin{tikzpicture}[node distance=2cm]
  13.         \node (F) [Box,  label=above:{\textcolor{red}{$I_1$}}] {$F$};
  14.         \ 
  15.         \node (D) [Box, right of =S, label=above:{\textcolor{red}{$I_2$}}] {$D$};
  16.         \ 
  17.         \node (W) [Box, right of =D, label=above:{\textcolor{red}{$I_3$}}] {$W$};
  18.         \ 
  19.         \node (R) [Box, right of =W, label=above:{\textcolor{red}{$I_4$}}] {$R$};
  21. \draw [arrow] (F) -- node[above]{\textcolor{red}{$\varphi_1$}}(D);
  22. \draw [arrow] (D) -- node[above]{\textcolor{red}{$\varphi_2$}}(W);
  23. \draw [arrow] (W) -- node[above]{\textcolor{red}{$\varphi_3$}}(R);
  24.         
  25.     \end{tikzpicture}
  26.     \end{figure}
  27. \end{center}

希望这能帮助你解决问题。谢谢你！

英文:

Im currently using Tikz to cite a mathematical model from a research but I don't know how to input an arrow before the node.

Here's a photo of the mathematical model that I'm trying to code:

在Tikz中在一个节点前输入一个箭头的方法

I don't know how to input the arrow entering the node F with dr above. Currently, this is all i have

  1. \tikzstyle{Box} = [rectangle, rounded corners, 
  2. minimum width=1.25cm, 
  3. minimum height=1.25cm,
  4. text centered, 
  5. draw=black, fill=yellow!30]
  7. \tikzstyle{arrow} = [thick,->,>=stealth]
  9. \begin{center}
  10.     \begin{figure}
  11.         \centering
  12.     \begin{tikzpicture}[node distance=2cm]
  13.         \node (F) [Box,  label=above:{\textcolor{red}{$I_1$}}] {$F$};
  14.         \ 
  15.         \node (D) [Box, right of =S, label=above:{\textcolor{red}{$I_2$}}] {$D$};
  16.         \ 
  17.         \node (W) [Box, right of =D, label=above:{\textcolor{red}{$I_3$}}] {$W$};
  18.         \ 
  19.         \node (R) [Box, right of =W, label=above:{\textcolor{red}{$I_4$}}] {$R$};
  21. \draw [arrow] (F) -- node[above]{\textcolor{red}{$\varphi_1$}}(D);
  22. \draw [arrow] (D) -- node[above]{\textcolor{red}{$\varphi_2$}}(W);
  23. \draw [arrow] (W) -- node[above]{\textcolor{red}{$\varphi_3$}}(R);
  24.         
  25.     \end{tikzpicture}
  26.     \end{figure}
  27. \end{center}

I hope anyone can help me resolve this problem. Thank you so much.

答案1

得分: 1

  1. 你可以在第一个框的左侧添加一个空节点，然后像处理其他箭头一样绘制箭头：
  3.     \documentclass{beamer}
  4.     
  5.     \usepackage{tikz}
  6.     \tikzset{
  7.       Box/.style={
  8.         rectangle, 
  9.         rounded corners, 
  10.         minimum width=1.25cm, 
  11.         minimum height=1.25cm,
  12.         text centered, 
  13.         draw=black, 
  14.         fill=yellow!30
  15.       },
  16.       arrow/.style={
  17.         thick,
  18.         ->,
  19.         >=stealth
  20.       }
  21.     }
  22.     
  23.     \begin{document}
  24.     	
  25.     \begin{frame}
  26.     
  27.     \begin{figure}
  28.     \begin{tikzpicture}[node distance=2cm]
  29.       \node (F) [Box,  label=above:{\textcolor{red}{$I_1$}}] {$F$};
  30.       \node (D) [Box, right of=F, label=above:{\textcolor{red}{$I_2$}}] {$D$};
  31.       \node (W) [Box, right of=D, label=above:{\textcolor{red}{$I_3$}}] {$W$};
  32.       \node (R) [Box, right of=W, label=above:{\textcolor{red}{$I_4$}}] {$R$};
  33.       \node (foo) [left of=F] {};
  34.       \draw [arrow] (F) -- node[above]{\textcolor{red}{$\varphi_1$}}(D);
  35.       \draw [arrow] (D) -- node[above]{\textcolor{red}{$\varphi_2$}}(W);
  36.       \draw [arrow] (W) -- node[above]{\textcolor{red}{$\varphi_3$}}(R);
  37.       \draw [arrow] (foo) -- node[above]{\textcolor{red}{dr}}(F);        
  38.     \end{tikzpicture}
  39.     \end{figure}
  40.     
  41.     \end{frame}	
  42.     	
  43.     \end{document}
英文:

You can add an empty node "left of" your first box and then draw the arrow just like you do for your other arrows:

  1. \documentclass{beamer}
  3. \usepackage{tikz}
  4. \tikzset{
  5.   Box/.style={
  6.     rectangle, 
  7.     rounded corners, 
  8.     minimum width=1.25cm, 
  9.     minimum height=1.25cm,
  10.     text centered, 
  11.     draw=black, 
  12.     fill=yellow!30
  13.   },
  14.   arrow/.style={
  15.     thick,
  16.     ->,
  17.     >=stealth
  18.   }
  19. }
  21. \begin{document}
  22. 	
  23. \begin{frame}
  25. \begin{figure}
  26. \begin{tikzpicture}[node distance=2cm]
  27.   \node (F) [Box,  label=above:{\textcolor{red}{$I_1$}}] {$F$};
  28.   \node (D) [Box, right of =F, label=above:{\textcolor{red}{$I_2$}}] {$D$};
  29.   \node (W) [Box, right of =D, label=above:{\textcolor{red}{$I_3$}}] {$W$};
  30.   \node (R) [Box, right of =W, label=above:{\textcolor{red}{$I_4$}}] {$R$};
  31.   \node (foo) [left of=F] {};
  32.   \draw [arrow] (F) -- node[above]{\textcolor{red}{$\varphi_1$}}(D);
  33.   \draw [arrow] (D) -- node[above]{\textcolor{red}{$\varphi_2$}}(W);
  34.   \draw [arrow] (W) -- node[above]{\textcolor{red}{$\varphi_3$}}(R);
  35.   \draw [arrow] (foo) -- node[above]{\textcolor{red}{dr}}(F);        
  36. \end{tikzpicture}
  37. \end{figure}
  39. \end{frame}	
  40. 	
  41. \end{document}

huangapple
  • 本文由 发表于 2023年3月9日 22:52:47
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  • latex
  • tikz
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