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如何在图中绘制箭头，使得箭头指向特定节点？

tag-icon • tag-icon tikz-pgf positioning arrows tikz-arrows
如何在图中绘制箭头，使得箭头指向特定节点？

我有一张包含 8 个节点的图形。我想画一些箭头，让它们指向一些节点（例如，我想画一些指向 4 个节点的箭头）。此外，我想在每个箭头旁边写一些文字。为此，我使用了此网页：http://en.wikibooks.org/wiki/LaTeX/Picture#Arrows我认为我必须单独编写每个箭头并手动固定位置。但是，我无法将箭头从其所在的位置移动。有什么想法吗？这就是结果这是我使用的完整代码：

 \\documentclass[11pt]{article}
\usepackage{tikz}
\usepackage{caption}
\usepackage{subcaption}
\begin{document}
\tikzset{%
   point/.style = {fill=black,inner sep=1pt, circle, minimum width=3pt,align=right,rotate=60},
   } 
\tikzstyle{weight} = [font=\scriptsize]  
\tikzstyle{vertex}=[circle,fill=blue!20]

\makeatletter
\setlength{\@fptop}{0pt}
\makeatother

\section{Some section}

\begin{figure}
 \centering
 \begin{subfigure}{0.5\textwidth}
 \resizebox{0.7\textwidth}{!}{
 \begin{tikzpicture}
  [scale=.8,auto=right]
      \put(0,10){\vector(1,0){20}}
      \node[vertex] (v1) at (1,10)  {$a$};
      \node[vertex] (v2) at (1,8)  {$b$};
      \node[vertex] (v3) at (1,6)  {$c$};
      \node[vertex] (v4) at (1,4)  {$d$};
      \node[vertex] (v5) at (8,10)  {$e$};
      \node[vertex] (v6) at (8,8)  {$f$};
      \node[vertex] (v7) at (8,6)  {$g$};
      \node[vertex] (v8) at (8,4)   {$h$};

     \draw[->] (v1)--(v8);
     \draw[->] (v1)--(v5);
     \draw[->] (v2)--(v5);
     \draw[->] (v2)--(v6);
     \draw[->] (v3)--(v6);
     \draw[->] (v3)--(v7);
     \draw[->] (v4)--(v7);
     \draw[->] (v4)--(v8);
 \end{tikzpicture}
 }

 \caption{I want to place the arrow s.t. it will point to node "a". Also I want to insert some text above the arrow}
    \label{fig:1}
    \end{subfigure}
    \hspace{4em}%
    \caption{I want to place the arrow s.t. it will point to node "a". Also I want to insert some text above the arrow.}\label{fig:animals}
\end{figure}




\end{document}

答案1

可能是这样的吗？

固定节点

这是使用pin标记节点工具生成的。请注意，我已更新您的代码以使其\tikzset一致使用，因为\tikzstyle已弃用。

\documentclass[tikz, border=10pt]{standalone}

\begin{document}

  \tikzset{%
    point/.style = {fill=black,inner sep=1pt, circle, minimum width=3pt,align=right,rotate=60},
    weight/.style={font=\scriptsize},
    vertex/.style={circle,fill=blue!20}
  }

  \begin{tikzpicture}
    [scale=.8,auto=right]
    \put(0,10){\vector(1,0){20}}
    \node[vertex, pin={[pin edge=<-, pin distance=10pt]105:{Label Here}}] (v1) at (1,10)  {$a$};
    \node[vertex] (v2) at (1,8)  {$b$};
    \node[vertex] (v3) at (1,6)  {$c$};
    \node[vertex] (v4) at (1,4)  {$d$};
    \node[vertex] (v5) at (8,10)  {$e$};
    \node[vertex] (v6) at (8,8)  {$f$};
    \node[vertex] (v7) at (8,6)  {$g$};
    \node[vertex] (v8) at (8,4)   {$h$};

    \draw[->] (v1)--(v8);
    \draw[->] (v1)--(v5);
    \draw[->] (v2)--(v5);
    \draw[->] (v2)--(v6);
    \draw[->] (v3)--(v6);
    \draw[->] (v3)--(v7);
    \draw[->] (v4)--(v7);
    \draw[->] (v4)--(v8);

  \end{tikzpicture}

\end{document}

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