如何使用 \draw 连接节点

Question

我正在尝试在 Latex 中绘制这样的结构，但遇到了困难。我知道如何使用 绘制节点\node，如何使用 绘制弧线\draw，但我无法将两者联系起来。

Answer 1

为了帮助你开始使用 Ti钾Z，这里有一个快速解决方案，可以重现您的手绘设计。请随意调整。

将来，请考虑添加最小工作示例（MWE）这说明了您的问题，以 开始\documentclass{...}并以 结束\end{document}。

\documentclass[tikz,border=3.14mm]{standalone}
\usetikzlibrary{chains}
\begin{document}
    \begin{tikzpicture}[
        start chain=going base right,
        node distance=2cm,
        every on chain/.append style=
            {draw = violet,
            circle,
            inner sep=0pt,
            minimum size=1cm,
            line width=1pt,
            font=\sffamily},
        myedge/.style={line width=1pt, violet}]
        
        \foreach \i in {1,...,6}
            \node[on chain] (\i) {\i};
        
        \foreach \i in {1,...,5}
            {
            \pgfmathtruncatemacro{\j}{\i+1}
            \draw[myedge] (\i) -- (\j);
            }
        
        \draw[myedge]   (1) to [out=90, in=0] ++(-2,3)
                        (2) to [out=90, in=180] ++(2,3)
                        (3) to [out=90, in=90, looseness=1.5] (4)
                        (5) to [out=90, in=180] ++(2,3);
    \end{tikzpicture}
\end{document}

Answer 2

与 @SebGlaw 的回答有一点点不同：

\documentclass[border=3.141592]{standalone}
\usepackage{tikz}
\usetikzlibrary{chains,
                positioning}

\begin{document}
    \begin{tikzpicture}[
node distance = 2cm, on grid, 
  start chain = going right,   %
vertex/.style = {circle, draw = blue, thick,
                 minimum size=1em, 
                 font=\sffamily,
                 on chain, join = by arr},
   arr/.style = {draw=blue, semithick},                        
                        ]                        ]
    \foreach \i in {1,...,6}
\node[vertex] (\i) {\i};

\draw[arr]  (1) edge [out=90, in=0]   ++(-2,3)
            (2) edge [out=90, in=180] ++( 2,3)
            (3) edge [out=90, in=90,
                      min distance=15mm] (4)
            (5) edge [out=90, in=180] ++(2,3);
    \end{tikzpicture}
\end{document}

Answer 3

初学者可以采用以下方法解决此问题：

首先，使用命令将节点放置在所需的坐标处\node。然后使用\draw根据需要连接节点。to[out= , in=]描述向外的角度和向内的角度以获得曲线。最后，描述相对于节点的++(x,y)相对坐标（右x、上）。y

\documentclass{article}

\usepackage{tikz}

\begin{document}

\begin{tikzpicture}[every node/.style={circle, draw=blue, thick, inner sep=5pt}]
\node at (2,0)(A1){1};
\node at (4,0)(A2){2};
\node at (6,0)(A3){3};
\node at (8,0)(A4){4};
\node at (10,0)(A5){5};
\node at (12,0)(A6){6};
\draw[thick, blue] (A1)--(A2)--(A3)--(A4)--(A5)--(A6) 
    (A3) to[out=90, in=90] (A4)
    (A1) to[out=90, in=0] ++(-1,2)
    (A2) to[out=90, in=180] ++(1,2)
    (A5) to[out=90, in=180] ++(1,2);
\end{tikzpicture}

\end{document}