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tikz：一条线上的不同风格

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tikz：一条线上的不同风格

我需要一条部分虚线。我已经用一条水平线实现了这一点，方法是插入一个节点删除该部分线，然后绘制一条新线。但是，对于弯曲的线，我认为我必须计算交点，但它并不像我预期的那样工作。我想知道是否有更简单、更直接的方法来做到这一点。

\documentclass{minimal}
\usepackage{tikz}
\usetikzlibrary{shapes, positioning, arrows, calc, intersections}
\tikzset{hidden node/.style={circle,draw,minimum size=.8cm,inner sep=0pt}, }
\usepackage[active,tightpage]{preview}
\PreviewEnvironment{tikzpicture}
\setlength\PreviewBorder{5pt}

\begin{document}
\makeatletter
\tikzset{
    dot diameter/.store in=\dot@diameter,
    dot diameter=3pt,
    dot spacing/.store in=\dot@spacing,
    dot spacing=10pt,
    dots/.style={
        line width=\dot@diameter,
        line cap=round,
        dash pattern=on 0pt off \dot@spacing
    }
}
\makeatother

\begin{tikzpicture}

\node[hidden node] (noiseVar) at (5,4) {$\sigma^2_n$};
\node[hidden node] (noise) at (0,4) {$\varepsilon$};
\node[hidden node] (x) at (0,0) {$x$};

\draw[line width=2] (noiseVar) to node (midf) [pos=.3, fill=white, minimum width = .8cm] {} (noise);
\draw[dot diameter = 2pt, dot spacing = .3cm, dots] (midf.east) to (midf.west);

\draw[->,>=stealth',shorten >=1pt, name path=varToNoise] (noiseVar) to node (midn) [pos=.3, fill=white, minimum width = .8cm, minimum height = .8cm] {} (x);
\path[name path=midneast] (midn.north east) to (midn.south east);
\path[name path=midnwest] (midn.north west) to (midn.south west);
\node[coordinate, name intersections = {of = {varToNoise} and midneast}] (E) at  (intersection-1) {};
\node[coordinate, name intersections = {of = {varToNoise} and midnwest}] (W) at  (intersection-1) {};
draw [dot diameter = 2pt, dot spacing = .3cm, dots ] (E) to (W);

\end{tikzpicture}
\end{document}

在此处输入图片描述

答案1

您漏掉了最后一行的一个\in 。draw

draw [dot diameter = 2pt, dot spacing = .3cm, dots ] (E) to (W);

然后它就会按照你的方式运行。

虽然intersection不需要，但是您必须sloped向节点添加选项midn：

\draw[->,>=stealth',shorten >=1pt, name path=varToNoise] (noiseVar) to 
node (midn) [pos=.3, fill=white, minimum width = .8cm, minimum height = .8cm,sloped] {} (x);

完整代码：

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shapes, positioning, arrows, calc, intersections}
\tikzset{hidden node/.style={circle,draw,minimum size=.8cm,inner sep=0pt}, }
\usepackage[active,tightpage]{preview}
\PreviewEnvironment{tikzpicture}
\setlength\PreviewBorder{5pt}

\begin{document}
\makeatletter
\tikzset{
    dot diameter/.store in=\dot@diameter,
    dot diameter=3pt,
    dot spacing/.store in=\dot@spacing,
    dot spacing=10pt,
    dots/.style={
        line width=\dot@diameter,
        line cap=round,
        dash pattern=on 0pt off \dot@spacing
    }
}
\makeatother

\begin{tikzpicture}

\node[hidden node] (noiseVar) at (5,4) {$\sigma²_n$};
\node[hidden node] (noise) at (0,4) {$\varepsilon$};
\node[hidden node] (x) at (0,0) {$x$};

\draw[line width=2] (noiseVar) to node (midf) [pos=.3, fill=white, minimum width = .8cm] {} (noise);
\draw[dot diameter = 2pt, dot spacing = .3cm, dots] (midf.east) to (midf.west);

\draw[->,>=stealth',shorten >=1pt, name path=varToNoise] (noiseVar) to node (midn) [pos=.3, fill=white, minimum width = .8cm, minimum height = .8cm,sloped] {} (x);
%\path[name path=midneast] (midn.north east) to (midn.south east);
%\path[name path=midnwest] (midn.north west) to (midn.south west);
%\node[coordinate, name intersections = {of = {varToNoise} and midneast}] (E) at  (intersection-1) {};
%\node[coordinate, name intersections = {of = {varToNoise} and midnwest}] (W) at  (intersection-1) {};
\draw [dot diameter = 2pt, dot spacing = .3cm, dots ] (midn.west) to (midn.east);

\end{tikzpicture}
\end{document}

在此处输入图片描述

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