调整路径标签的位置

Question

我的问题是路径标签混合了箭头，我的代码如下：

\documentclass{article}
\usepackage{tikz}
\usepackage[intlimits]{amsmath}

\begin{document}
\begin{center}
\begin{tikzpicture}[->, >=stealth', auto, semithick, node distance=3cm]
\node[state]    (x0)                     {$x_0$};
\node[state]    (x3)[above right of=x0]   {$x_3$};
\node[state]    (x4)[below right of=x0]   {$x_4$};
\node[state]    (x1)[right of=x3]   {$x_1$};
\node[state]    (x6)[right of=x4]   {$x_6$};
\node[state]    (x2)[below right of=x1]   {$x_2$};
\node[state]    (x5)[below right of=x2]   {$x_5$};
\path
(x1) edge[loop above]     node{$1/2$}         (x1)
   edge[ left]     node{$1/2$}     (x3)
(x0) edge[loop left]     node{$1/3$}         (x0)
   edge[bend left]     node{$1/3$}     (x3)
   edge[bend left]     node{$1/3$}     (x4)
(x3) edge[loop above]     node{$1/2$}         (x3)
   edge[bend left]     node{$1/2$}     (x0)
(x2) edge[loop right]     node{$1$}         (x2)
(x5) edge[loop left]     node{$1$}         (x5)
(x4) edge[bend left]     node{$1/2$}     (x0)
   edge[bend right]     node{$1/2$}     (x3)
(x6) edge[ left]     node{$1/3$}     (x1)      
   edge[ left]     node{$1/3$}     (x2)
   edge[ right]     node{$1/3$}     (x4);
\end{tikzpicture}
\end{center}
\end{document}

所以我的问题是如何移动，例如将路径 x3-x1 的标签移动到线的上方？并将路径 x3-x4 的标签移动到线的右侧？

Answer 1

它们的位置“错误”，因为你声明它们“错误”。因此，你可以更改相应nodes 的定位键，如下所示修订 1我的答案（参见那里的代码中的注释）。

但是由于您使用了auto键，大多数节点默认位于右侧。如果您认为它们应该位于“另一侧”，只需添加键即可swap。

\documentclass[border=5pt]{standalone}
\usepackage{tikz}
    \usetikzlibrary{
        arrows,
    }
\begin{document}
\begin{tikzpicture}[
    ->,
    >=stealth',
    auto,
    semithick,
    node distance=3cm,
    state/.style={
        circle,
        draw,
    },
]
    \begin{scope}[
        every node/.append style={
            state,
        },
    ]
        \node (x0)                     {$x_0$};
        \node (x3) [above right of=x0] {$x_3$};
        \node (x4) [below right of=x0] {$x_4$};
        \node (x1) [right of=x3]       {$x_1$};
        \node (x6) [right of=x4]       {$x_6$};
        \node (x2) [below right of=x1] {$x_2$};
        \node (x5) [below right of=x2] {$x_5$};
    \end{scope}

    \path
    (x1) edge [loop above] node        {$1/2$}  (x1)
         edge              node [swap] {$1/2$}  (x3)
    (x0) edge [loop left]  node        {$1/3$}  (x0)
         edge [bend left]  node        {$1/3$}  (x3)
         edge [bend left]  node        {$1/3$}  (x4)
    (x3) edge [loop above] node        {$1/2$}  (x3)
         edge [bend left]  node        {$1/2$}  (x0)
    (x2) edge [loop right] node        {$1$}    (x2)
    (x5) edge [loop left]  node        {$1$}    (x5)
    (x4) edge [bend left]  node        {$1/2$}  (x0)
         edge [bend right] node        {$1/2$}  (x3)
    (x6) edge              node        {$1/3$}  (x1)
         edge              node        {$1/3$}  (x2)
         edge              node [swap] {$1/3$}  (x4);
\end{tikzpicture}
\end{document}