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如何在圖中繪製箭頭，使箭頭指向特定節點？

tag-icon • tag-icon tikz-pgf positioning arrows tikz-arrows
如何在圖中繪製箭頭，使箭頭指向特定節點？

我有一個有 8 個節點的圖。我想繪製箭頭，它們會指向某些節點（例如我想繪製指向 4 個節點的箭頭）。另外，在每個箭頭旁邊我想寫一些文字。為此，我使用了以下網頁：http://en.wikibooks.org/wiki/LaTeX/Picture#Arrows我認為我必須單獨編寫每個箭頭並手動修復位置。但是，我無法將箭頭從原來的位置移開。有任何想法嗎？這是結果這是我使用的完整程式碼：

 \\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

可能是這樣的？

固定節點

這是使用pin標記節點的工具產生的。請注意，我已經更新了您的程式碼以一致地使用，\tikzset因為\tikzstyle它已被棄用。

\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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