Tikz：连接两个节点

Question

我有许多节点，想要连接其中两个，但是路径不会被划掉，就像下面的例子中的这两个节点之间的节点所覆盖（我想要连接L_0和R_0）：

为了创建此路径，我使用了以下命令：

\path [line,dashed] (l0) edge [] node {} (r0);

Answer 1

像这样？

\documentclass[tikz]{standalone}
\usetikzlibrary{positioning}
\begin{document}
  \begin{tikzpicture}
    \node (a) {a};
    \node[right=1cm of a] (b) {B};
    \node[right=1cm of b] (c) {C};
    \node[right=1cm of c] (d) {D};
    \node[right=1cm of d] (e) {E};
    \node[right=1cm of e] (f) {F};
    \draw [dashed] (a) to[bend left] node {} (f);
    \draw [red,dashed] (a) -- ++(0,5mm) -| node {} (f);
  \end{tikzpicture}
\end{document}

Answer 2

我建议您使用to语法并指定out和in角度。以下是一些示例，也许可以调整distance：

代码：

\documentclass[tikz]{standalone}
\usetikzlibrary{positioning}
\begin{document}
  \begin{tikzpicture}[thick, dashed]
  \foreach [count=\i] \x in {$L_0$, $R_3$, $R_1$, $L_2$, $R_0$} {
      \node (\i) at (\i,0) {\x};
  }
  \draw [olive  ] (1.north) to[out=50, in=100] (5.north);
  \draw [red    ] (1.north) to[out=30, in=150] (5.north);
  \draw [blue   ] (1.south) to[out=-30, in=-150] (5.south);
  \draw [magenta] (1.south) to[out=-30, in=-150, distance=2.5cm] (5.south);
  \draw [orange ] (1.south) to[out=-70, in=-110] (5.south);
  \end{tikzpicture}
\end{document}