到另一条路径的中点的路径

Question

我想在另一条路径的中点结束一条路径。我倾向于尝试在偏移量等于节点距离的一半处结束路径d.north，但我似乎尝试的任何方法都无法编译。这是我目前所拥有的（最终目标是以“此处”结束的“否”路径）

\documentclass{article}

\usepackage{tikz}
\usetikzlibrary{shapes,arrows,calc}
\begin{document}
\pagestyle{empty}    

% Define block styles
\tikzstyle{box} = [rectangle, draw]
\tikzstyle{line} = [draw, -latex']

\begin{tikzpicture}[node distance = 3cm, auto]
    % Place nodes
    \node [box] (a) {A};
    \node [box, below of=a] (b) {B};
    \node [box, below of=b] (c) {C};
    \node [box, below of=c] (d) {D};

       % Draw edges
    \path [line] (a) -- (b);
    \path [line] (b) -- (c);
    \path [line] (c) -- node [midway, left] {HERE} (d);

   \path [line] (a.east) --node [above] {No}  +(1,0) |- (d.north);     

\end{tikzpicture}

\end{document}

我在路径装饰上看到了一些东西，但我真的不确定如何使用它们，也不确定我是否可以在它们上面结束路径。

Answer 1

您的代码已经包含一个解决方案（不带calc库）midway：！

\documentclass{standalone}
\usepackage{tikz}
\usepackage{tikz}
\usetikzlibrary{shapes,arrows}

\tikzstyle{box} = [rectangle, draw]
\tikzstyle{line} = [draw, -latex']

\begin{document}
\begin{tikzpicture}[node distance = 3cm, auto]
    % Place nodes
    \node [box] (a) {A};
    \node [box, below of=a] (b) {B};
    \node [box, below of=b] (c) {C};
    \node [box, below of=c] (d) {D};

       % Draw edges
    \path [line] (a) -- (b);
    \path [line] (b) -- (c);
    \path [line] (c) -- coordinate[midway](m) (d);

   \path [line] (a.east) --node [above] {No}  +(1,0) |- (m);     
\end{tikzpicture}
\end{document}

Answer 2

像这样？表示在和(c)!0.5!(d)中间。(c)(d)

\documentclass{article}

\usepackage{tikz}
\usetikzlibrary{shapes,arrows,calc}
\begin{document}
\pagestyle{empty}    

% Define block styles
\tikzstyle{box} = [rectangle, draw]
\tikzstyle{line} = [draw, -latex']

\begin{tikzpicture}[node distance = 3cm, auto]
    % Place nodes
    \node [box] (a) {A};
    \node [box, below of=a] (b) {B};
    \node [box, below of=b] (c) {C};
    \node [box, below of=c] (d) {D};

       % Draw edges
    \path [line] (a) -- (b);
    \path [line] (b) -- (c);
    \path [line] (c) -- node [midway, left] {HERE} (d);

   \path[line] let \p1 = ( $(c)!0.5!(d) $ ) in (a.east) --node [above] {No}  +(1,0) |- +(0,\y1);     

\end{tikzpicture}

\end{document}