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流程图中的弯曲边缘

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流程图中的弯曲边缘

我使用 TikZ 包创建了如左图所示的流程图（我使用的代码如下）。我想添加曲线边缘流程图和循环，使其如右图所示。

先感谢您。

在此处输入图片描述

我的代码。

\documentclass[a4paper,10pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usetikzlibrary{calc,trees,positioning,arrows,chains,shapes.geometric,
decorations.pathreplacing,decorations.pathmorphing,shapes,
matrix,shapes.symbols}
\usepackage{array}
\usepackage{amsmath}
\usepackage{amsxtra}
\usepackage{amsfonts}
\usepackage{amssymb}
\begin{document}
\begin{center}
\tikzstyle{decision} = [diamond, draw, fill=blue!20,text width=6.5em, text badly centered, node distance=5cm, inner sep=0pt]
\tikzstyle{block}    = [rectangle,fill=blue!20, text width=8em, text centered, rounded corners, minimum height=4em]
\tikzstyle{line}     = [draw, -latex']
\tikzstyle{arco}     = [draw,->]
\tikzstyle{cloud}    = [draw, circle,fill=red!20, node distance=4cm,minimum height=4em]
\tikzstyle{pil}      = [->,thick,shorten <=2pt, shorten >=2pt]
\begin{tikzpicture}[node distance = 2cm, auto]
    % Place nodes
    \node [block] 
            (12) 
        {1nialize model};
    \node [block, left of=12, node distance=6cm]
            (11) {\\ Probability spaces \\ $(\mathbb{R},\mathcal{B}(\mathbb{R}),\mathbb{P})$\\ };
    \node [cloud, right of=12] 
            (13)
            {coments};
    \node [block, below of=12] 
            (22) 
            {verify candidate models};
    \node [block, below of=22]
        (32) {rum candidate models};
    \node [block, left of=32, node distance=6cm] 
            (31) {update model};
    \node [decision, below of=32]
            (decide) {is best candidate better?};
    \node [block, below of=decide, node distance=6cm] 
            (stop) {stop};
    % Draw edges
    \path [line]          (12)     -- (22);
    \path [line]          (13)   -- (22);
    \path [line]          (22) -- (32);
    \path [line]          (32) -- (decide);
    \path [line]          (decide)   -| node [near start] {yes} (31);
    \path [line]          (31)   |- (22);
    \path [line]          (decide)   -- node {no}(stop);
    \path [line]          (11)   -- (12);
    \path [arco]          (13)   -- (12);
    \path [arco]          (13)   |- (32);
    \path [arco]          (13)   -- (stop);
\end{tikzpicture}
\end{center}
\end{document}

答案1

我刚刚添加

\draw [very thick,->] (13) to [out=-90,in=0] (32);
\draw [very thick,->] (13) to [out=-90,in=45] (decide.east);
\draw [very thick,->] (13) to [out=-90,in=60] (stop.east);
\draw [very thick,->] (13) edge[loop right] (13);

到您的代码

\documentclass[a4paper,10pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usetikzlibrary{calc,trees,positioning,arrows,chains,shapes.geometric,
  decorations.pathreplacing,decorations.pathmorphing,shapes,
matrix,shapes.symbols}
\usepackage{array}
\usepackage{amsmath}
\usepackage{amsxtra}
\usepackage{amsfonts}
\usepackage{amssymb}
\begin{document}
\begin{center}
  \tikzstyle{decision} = [diamond, draw, fill=blue!20,text width=6.5em, text badly centered, node distance=5cm, inner sep=0pt]
  \tikzstyle{block}    = [rectangle,fill=blue!20, text width=8em, text centered, rounded corners, minimum height=4em]
  \tikzstyle{line}     = [draw, -latex']
  \tikzstyle{arco}     = [draw,->]
  \tikzstyle{cloud}    = [draw, circle,fill=red!20, node distance=4cm,minimum height=4em]
  \tikzstyle{pil}      = [->,thick,shorten <=2pt, shorten >=2pt]
  \begin{tikzpicture}[node distance = 2cm, auto]
        % Place nodes
        \node [block] (12) {1nialize model};
        \node [block, left of=12, node distance=6cm] (11) {\\ Probability spaces \\ $(\mathbb{R},\mathcal{B}(\mathbb{R}),\mathbb{P})$\\ };
        \node [cloud, right of=12] (13) {coments};
        \node [block, below of=12] (22) {verify candidate models};
        \node [block, below of=22] (32) {rum candidate models};
        \node [block, left of=32, node distance=6cm] (31) {update model};
        \node [decision, below of=32] (decide) {is best candidate better?};
        \node [block, below of=decide, node distance=6cm] (stop) {stop};
        % Draw edges
        \path [line]          (12)     -- (22);
        \path [line]          (13)   -- (22);
        \path [line]          (22) -- (32);
        \path [line]          (32) -- (decide);
        \path [line]          (decide)   -| node [near start] {yes} (31);
        \path [line]          (31)   |- (22);
        \path [line]          (decide)   -- node {no}(stop);
        \path [line]          (11)   -- (12);
        \path [arco]          (13)   -- (12);
        \path [arco]          (13)   |- (32);
        %\draw [red] (13) .. controls (13 |- 32) .. (32);
        \draw [very thick,->] (13) to [out=-90,in=0] (32);
        \draw [very thick,->] (13) to [out=-90,in=45] (decide.east);
        \draw [very thick,->] (13) to [out=-90,in=60] (stop.east);
        \draw [very thick,->] (13) edge[loop right] (13);
        \path [arco]          (13)   -- (stop);
  \end{tikzpicture}
\end{center}
\end{document}

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