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如何将箭头从一个节点指向对角箭头的中心

tag-icon • tag-icon tikz-pgf positioning arrows
如何将箭头从一个节点指向对角箭头的中心

我在定位一个箭头时遇到了问题。HA 的箭头应该指向 (JC-JS) 的中心，但 (JC-JS) 不起作用。我在网上找不到解决方案。有人能帮我吗（查看代码和图片，我在代码中对错误的地方做了注释）。最好的情况是，如果 HA 的高度恰好位于 JC 和 JS 的高度之间，我该怎么做？祝你有美好的一天！Tobias

在此处输入图片描述

\documentclass{article}

\usepackage{tikz}
\usepackage{pgfplots}
\pgfplotsset{compat=1.8}
\usetikzlibrary{positioning}

\begin{document}


\begin{figure}[h!]
\label{illustration}
\centering
\caption{bla}
\begin{tikzpicture}
  [node distance=1cm and 4.4cm,
   ar/.style={->,>=latex},
   mynode/.style=
    {draw,
     text width=4.4cm,
     minimum height=1cm,
     align=center
    }
  ]
  \node[mynode] (JC) {JC};
  \node[mynode,right=of JC] (RA) {RA};
  \draw[ar] (JC) -> node[below] {bla} coordinate(JC-RA) (RA);
  \node[mynode, text width=2cm, above=of JC-RA] (HE) {HE};
  \node[mynode, text width=4cm, below=1.3 of JC-RA, dashed] (JS) {JS};
  \node[mynode, draw=none, text width=4cm, below=0 of JS] (H4) {bla};
  \node[mynode, text width=2cm, left=2 of JS] (HA) {HA};

 \draw[ar] (HE.south) ->  (JC-RA);
  \draw[ar] (HA.north east) ->  (JC-RA); %this arrow should be directed at the center of (JC-JS) just like the arrow before, but instead of JC-RA, it should be (JC-JS), but that doesn't work 
  \draw[ar] (JC.south) ->  (JS.west);
  \draw[ar] (JS.east) -> node[below=0.1cm, right] {bla}  (RA.south);
\end{tikzpicture}

\end{figure}


\end{document}

解决方案，感谢 John Kormylo --->

在此处输入图片描述

\documentclass{article}

\usepackage{tikz}
\usepackage{pgfplots}
\pgfplotsset{compat=1.8}
\usetikzlibrary{positioning}

\begin{figure}[h!]
\label{illustration}
\centering
\caption{bla}
\begin{tikzpicture}
  [node distance=1cm and 4.4cm,
   ar/.style={->,>=latex},
   mynode/.style=
    {draw,
     text width=4.4cm,
     minimum height=1cm,
     align=center
    }
  ]
  \node[mynode] (JC) {JC};
  \node[mynode,right=of JC] (RA) {RA};
  \draw[ar] (JC) -> node[below] {} coordinate(JC-RA) (RA);
  \node[mynode, text width=1.6cm, above=of JC-RA] (HE) {HE};
  \node[mynode, text width=4cm, below=1.3 of JC-RA, dashed] (JS) {JS};
  \node[mynode, text width=1.6cm, left=2.3 of JS] (HA) {HA};

 \draw[ar] (HE.south) ->  (JC-RA);
\draw[ar] (JC.south) -> node[above] {} (JS.west) coordinate[midway] (JCJS);
  \draw[ar] (HA.east) -> node[below] {}  (JCJS);
  \draw[ar] (JS.east) -> node[above] {}  (RA.south);
\end{tikzpicture}

\end{figure}


\end{document}

答案1

我还稍微清理了一下代码。

\documentclass{article}

\usepackage{tikz}
\usepackage{pgfplots}
\pgfplotsset{compat=1.8}
\usetikzlibrary{positioning}

\begin{document}

\begin{figure}[h!]
\centering
\caption{bla}\label{illustration}
\begin{tikzpicture}
  [node distance=1cm and 4.4cm,
   ar/.style={->,>=latex},
   mynode/.style=
    {draw,
     text width=4.4cm,
     minimum height=1cm,
     align=center
    }
  ]
  \node[mynode] (JC) {JC};
  \node[mynode,right=of JC] (RA) {RA};
  \draw[ar] (JC) -> (RA) coordinate[midway](JC-RA) ;
  \node[mynode, text width=1.6cm, above=of JC-RA] (HE) {HE};
  \node[mynode, text width=4cm, below=1.3 of JC-RA, dashed] (JS) {JS};
  \node[mynode, text width=1.6cm, left=2.3 of JS] (HA) {HA};

 \draw[ar] (HE.south) -> (JC-RA);
 \draw[ar] (JC.south) -> (JS.west) coordinate[midway] (JCJS);
 \draw[ar] (HA.east) -> (JCJS);
 \draw[ar] (JS.east) -> (RA.south);
\end{tikzpicture}

\end{figure}

\end{document}

另一种方法是使用 calc tikzlibrary 来定义坐标($(JC.south)!.5!(JS.west)$)，但原始解决方案更简单。

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