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tikz：标签边数

tag-icon • tag-icon tikz-pgf graphs loops edge
tikz：标签边数

下图中两个顶点之间有多条边。但我只能绘制一条边。所以我想标记边的数量。我该怎么做？例如和$3$之间有边。我该如何标记？$1$$4$$3$

\[\begin{tikzpicture}[scale=3, every loop/.style={}]

    \vertex[fill] (1) at (.5, 1)  [label=above: 1] {}; 
 \vertex [fill](2) at (0,.5) [label=left: 2] {};
\vertex[fill] (3) at (.5,0) [label=above: 3]{};
  \vertex[fill] (4) at (1,0) [label=above: 4] {};   
    \vertex[fill] (5) at (1.5, 0.5) [label=right: 5]  {};  
    \vertex [fill](6) at (1,1) [label=left: 6] {};  
 \draw (1,1)  to[in=-50,out=-130,loop] (1,1);
    \path


        (1) edge (4)
        (1) edge (4)
        (1) edge (4)
        (1) edge (2)
        (2) edge (4)
        (2) edge (5)
        (3) edge (5)
        (3) edge (6)

     ;  
\end{tikzpicture}\]

答案1

您可能正在寻找以下内容：

在此处输入图片描述

由于您没有提供完整的小文档来说明是什么信息\vertex，我重建了自己的代码，希望它与您想要的类似。在这方面我做了一些重要的改变：

  • 删除scale并相应地乘以每个坐标
  • 减小边缘标签的字体大小

  • 定义标签的位置，使它们不重叠

    \documentclass[12pt,tikz, margin=3mm]{standalone}
\usetikzlibrary{arrows.meta,
                quotes}

\begin{document}
    \begin{tikzpicture}[
vertex/.style = {circle, fill, inner sep=2pt, outer sep=0pt},
every edge quotes/.style = {auto=left, sloped, font=\scriptsize, inner sep=1pt}
                        ]
\node[vertex] (1) at (1.5,3)     [label=above: 1] {};
\node[vertex] (2) at (0,1.5)     [label=left: 2]  {};
\node[vertex] (3) at (1.5,0)     [label=left: 3]  {};
\node[vertex] (4) at (3,0)       [label=right: 4] {};
\node[vertex] (5) at (4.5,1.5)   [label=right: 5] {};
\node[vertex] (6) at (3,3)       [label=above: 6] {};
%
\path   (1) edge [pos=.35, "a"] (4)
        (1) edge ["b"]  (2)
        (2) edge ["c"]  (4)
        (2) edge [pos=.35, "d"]  (5)
        (3) edge [in=-50,out=-130, looseness=12] (3)
        (3) edge ["e"]  (5)
        (3) edge [pos=.75, "f"]  (6);
    \end{tikzpicture}
\end{document}

附录： 另一个代码，稍微短一点，使用positioning库：

\documentclass[tikz, margin=3mm]{standalone}
\usetikzlibrary{arrows.meta,
                positioning,
                quotes}

\begin{document}
    \begin{tikzpicture}[
node distance = 11mm and 11mm,
   dot/.style = {circle, fill, inner sep=2pt, outer sep=0pt,
                 label=#1, node contents={}},
every edge quotes/.style = {auto=left, sloped, font=\scriptsize, inner sep=1pt}
                        ]
\node (1) [dot=above:1];
\node (2) [dot= left:2, below  left=of 1];
\node (3) [dot= left:3, below right=of 2];
\node (4) [dot=right:4,       right=of 3];
\node (5) [dot=right:5, above right=of 4];
\node (6) [dot=above:6, above  left=of 5];
%
\path   (1) edge [pos=.35, "a"] (4)
        (1) edge ["b"]  (2)
        (2) edge ["c"]  (4)
        (2) edge [pos=.35, "d"]  (5)
        (3) edge [in=-50,out=-130, looseness=12] (3)
        (3) edge ["e"]  (5)
        (3) edge [pos=.75, "f"]  (6);
    \end{tikzpicture}
\end{document}

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