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从图表中删除线条

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从图表中删除线条

使用模板，我成功绘制了一个图表。该图表完全符合我的要求，但有一个例外：我想避免从标题（博弈论讲义）开始的线条。即使这应该很容易，但我似乎无法擦除它们。输出如下：

在此处输入图片描述

MWE 可以在这里看到：

\documentclass[margin=2pt]{standalone}
\usepackage{tikz}
\usetikzlibrary{arrows,shapes,positioning,shadows,trees}

\tikzset{basic/.style={text width=22em},root/.style={basic,thin,align=center,fill=white!100},level 2/.style = {basic,draw,thin,align=center,fill=white!100,text width=16em},level 3/.style = {basic,thin,align=center,fill=gray!10,text width=14em}}

\begin{document}

\begin{tikzpicture}[level 1/.style={sibling distance=60mm},]
\node[root]{\textbf{\Large{Game Theory Lecture Notes}}}
child {node[level 2] (c1) {\textbf{\large{General Introduction}} \\ \small{Chapters 1 --- 2}}}
child {node[level 2] (c2) {\textbf{\large{Non-Cooperative Games}} \\ \small{Chapters 3 --- 7}}}
child {node[level 2] (c3) {\textbf{\large{Cooperative Games}} \\ \small{Chapters 8 --- 9}}}
child {node[level 2] (c4) {\textbf{\large{Advanced Topics}} \\ \small{Chapters 10 --- 12}}};

\begin{scope}[every node/.style={level 3}]
\node [below of = c1, yshift=-10pt] (c11) {\textbf{Choice Theory} \\\small{Chapter 1}};
\node [below of = c11, yshift=-10pt] (c12) {\textbf{Game Theory} \\\small{Chapter 2}};

\node [below of = c2, yshift=-10pt] (c21) {\textbf{Normal Form Games} \\\small{Chapter 3}};
\node [below of = c21, yshift=-10pt] (c22) {\textbf{Extensive Form Games} \\\small{Chapter 4}};
\node [below of = c22, yshift=-10pt] (c23) {\textbf{Equilibrium Concepts} \\\small{Chapter 5}};
\node [below of = c23, yshift=-10pt] (c24) {\textbf{Repeated Games} \\\small{Chapter 6}};
\node [below of = c24, yshift=-10pt] (c25) {\textbf{Incomplete Information} \\\small{Chapter 7}};

\node [below of = c3, yshift=-10pt] (c31) {\textbf{Bargaining Theory} \\\small{Chapter 8}};
\node [below of = c31, yshift=-10pt] (c32) {\textbf{Coalitional Games} \\\small{Chapter 9}};

\node [below of = c4, yshift=-10pt] (c41) {\textbf{Epistemic Game Theory} \\\small{Chapter 10}};
\node [below of = c41, yshift=-10pt] (c42) {\textbf{Lexicographic Beliefs} \\\small{Chapter 11}};
\node [below of = c42, yshift=-10pt] (c43) {\textbf{Algorithmic Game Theory} \\\small{Chapter 12}};
\end{scope}

\end{tikzpicture}

\end{document}

如果有人知道如何删除这些行，我会非常高兴。谢谢大家的时间。

答案1

为了删除线条，必须更改样式edge from parent中的选项level 1。将其设置为空即可：

\begin{tikzpicture}[level 1/.style={sibling distance=60mm, edge from parent path=}]

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