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<!DOCTYPE html>
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<title>数据工程讲义：经济学分册</title>
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<meta name="twitter:title" content="数据工程讲义：经济学分册" />
<meta name="twitter:description" content="适用于数据工程与数据科学课程的教材。" />
<meta name="author" content="史冬波 续本达" />
<meta name="date" content="2024-02-03" />
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<div class="book without-animation with-summary font-size-2 font-family-1" data-basepath=".">
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<nav role="navigation">
<ul class="summary">
<li><a href="./">数据工程讲义</a></li>
<li class="divider"></li>
<li class="chapter" data-level="" data-path="index.html"><a href="index.html"><i class="fa fa-check"></i>前言</a>
<ul>
<li class="chapter" data-level="" data-path="index.html"><a href="index.html#致谢"><i class="fa fa-check"></i>致谢</a></li>
</ul></li>
<li class="chapter" data-level="" data-path="author.html"><a href="author.html"><i class="fa fa-check"></i>作者简介</a></li>
<li class="chapter" data-level="1" data-path="intro.html"><a href="intro.html"><i class="fa fa-check"></i><b>1</b> 写在前面</a>
<ul>
<li class="chapter" data-level="1.1" data-path="intro.html"><a href="intro.html#为什么写本书"><i class="fa fa-check"></i><b>1.1</b> 为什么写本书</a></li>
<li class="chapter" data-level="1.2" data-path="intro.html"><a href="intro.html#如何使用本书"><i class="fa fa-check"></i><b>1.2</b> 如何使用本书</a></li>
</ul></li>
<li class="chapter" data-level="2" data-path="flow.html"><a href="flow.html"><i class="fa fa-check"></i><b>2</b> 数据工程：重塑经济学研究的流程</a>
<ul>
<li class="chapter" data-level="2.1" data-path="flow.html"><a href="flow.html#人工智能时代的社会科学研究机遇与挑战"><i class="fa fa-check"></i><b>2.1</b> 人工智能时代的社会科学研究：机遇与挑战</a>
<ul>
<li class="chapter" data-level="2.1.1" data-path="flow.html"><a href="flow.html#社会科学的三圈分类"><i class="fa fa-check"></i><b>2.1.1</b> 社会科学的三圈分类</a></li>
<li class="chapter" data-level="2.1.2" data-path="flow.html"><a href="flow.html#ai智能发展的三要素"><i class="fa fa-check"></i><b>2.1.2</b> AI智能发展的三要素</a></li>
<li class="chapter" data-level="2.1.3" data-path="flow.html"><a href="flow.html#ai对社会科学研究的冲击"><i class="fa fa-check"></i><b>2.1.3</b> AI对社会科学研究的冲击</a></li>
<li class="chapter" data-level="2.1.4" data-path="flow.html"><a href="flow.html#ai为社会科学研究创造的机遇"><i class="fa fa-check"></i><b>2.1.4</b> AI为社会科学研究创造的机遇</a></li>
</ul></li>
<li class="chapter" data-level="2.2" data-path="flow.html"><a href="flow.html#数据工程与数据科学"><i class="fa fa-check"></i><b>2.2</b> 数据工程与数据科学</a>
<ul>
<li class="chapter" data-level="2.2.1" data-path="flow.html"><a href="flow.html#数据工程的灵魂数据流"><i class="fa fa-check"></i><b>2.2.1</b> 数据工程的灵魂：数据流</a></li>
<li class="chapter" data-level="2.2.2" data-path="flow.html"><a href="flow.html#数据工程的钥匙数据结构"><i class="fa fa-check"></i><b>2.2.2</b> 数据工程的钥匙：数据结构</a></li>
<li class="chapter" data-level="2.2.3" data-path="flow.html"><a href="flow.html#数据工程师的工具箱"><i class="fa fa-check"></i><b>2.2.3</b> 数据工程师的工具箱</a></li>
</ul></li>
<li class="chapter" data-level="2.3" data-path="flow.html"><a href="flow.html#数据工程的四个指导原则"><i class="fa fa-check"></i><b>2.3</b> 数据工程的四个指导原则</a>
<ul>
<li class="chapter" data-level="2.3.1" data-path="flow.html"><a href="flow.html#可复现性原则"><i class="fa fa-check"></i><b>2.3.1</b> 可复现性原则</a></li>
<li class="chapter" data-level="2.3.2" data-path="flow.html"><a href="flow.html#模块化与正交分解原则"><i class="fa fa-check"></i><b>2.3.2</b> 模块化与正交分解原则</a></li>
<li class="chapter" data-level="2.3.3" data-path="flow.html"><a href="flow.html#最佳工具原则"><i class="fa fa-check"></i><b>2.3.3</b> 最佳工具原则</a></li>
<li class="chapter" data-level="2.3.4" data-path="flow.html"><a href="flow.html#一次原则"><i class="fa fa-check"></i><b>2.3.4</b> 一次原则</a></li>
</ul></li>
<li class="chapter" data-level="2.4" data-path="flow.html"><a href="flow.html#gnu-环境"><i class="fa fa-check"></i><b>2.4</b> GNU 环境</a>
<ul>
<li class="chapter" data-level="2.4.1" data-path="flow.html"><a href="flow.html#posix"><i class="fa fa-check"></i><b>2.4.1</b> POSIX</a></li>
<li class="chapter" data-level="2.4.2" data-path="flow.html"><a href="flow.html#gnu"><i class="fa fa-check"></i><b>2.4.2</b> GNU</a></li>
<li class="chapter" data-level="2.4.3" data-path="flow.html"><a href="flow.html#命令行"><i class="fa fa-check"></i><b>2.4.3</b> 命令行</a></li>
<li class="chapter" data-level="2.4.4" data-path="flow.html"><a href="flow.html#编辑器"><i class="fa fa-check"></i><b>2.4.4</b> 编辑器</a></li>
</ul></li>
<li class="chapter" data-level="2.5" data-path="flow.html"><a href="flow.html#版本控制"><i class="fa fa-check"></i><b>2.5</b> 版本控制</a>
<ul>
<li class="chapter" data-level="2.5.1" data-path="flow.html"><a href="flow.html#git"><i class="fa fa-check"></i><b>2.5.1</b> Git</a></li>
<li class="chapter" data-level="2.5.2" data-path="flow.html"><a href="flow.html#git的三种状态"><i class="fa fa-check"></i><b>2.5.2</b> Git的三种状态</a></li>
<li class="chapter" data-level="2.5.3" data-path="flow.html"><a href="flow.html#git仓库"><i class="fa fa-check"></i><b>2.5.3</b> Git仓库</a></li>
<li class="chapter" data-level="2.5.4" data-path="flow.html"><a href="flow.html#git命令实践"><i class="fa fa-check"></i><b>2.5.4</b> Git命令实践</a></li>
<li class="chapter" data-level="2.5.5" data-path="flow.html"><a href="flow.html#git目前的局限性"><i class="fa fa-check"></i><b>2.5.5</b> Git目前的局限性</a></li>
</ul></li>
</ul></li>
<li class="chapter" data-level="3" data-path="basic.html"><a href="basic.html"><i class="fa fa-check"></i><b>3</b> R语言基础</a>
<ul>
<li class="chapter" data-level="3.1" data-path="basic.html"><a href="basic.html#r语言简介"><i class="fa fa-check"></i><b>3.1</b> R语言简介</a></li>
<li class="chapter" data-level="3.2" data-path="basic.html"><a href="basic.html#r语言的特点"><i class="fa fa-check"></i><b>3.2</b> R语言的特点</a></li>
<li class="chapter" data-level="3.3" data-path="basic.html"><a href="basic.html#r与rtudio的安装"><i class="fa fa-check"></i><b>3.3</b> R与Rtudio的安装</a>
<ul>
<li class="chapter" data-level="3.3.1" data-path="basic.html"><a href="basic.html#安装r"><i class="fa fa-check"></i><b>3.3.1</b> 安装R</a></li>
<li class="chapter" data-level="3.3.2" data-path="basic.html"><a href="basic.html#在wsl上安装r语言"><i class="fa fa-check"></i><b>3.3.2</b> 在WSL上安装R语言</a></li>
<li class="chapter" data-level="3.3.3" data-path="basic.html"><a href="basic.html#r安装rstudio"><i class="fa fa-check"></i><b>3.3.3</b> R安装RStudio</a></li>
<li class="chapter" data-level="3.3.4" data-path="basic.html"><a href="basic.html#组织r代码的三种方式"><i class="fa fa-check"></i><b>3.3.4</b> 组织R代码的三种方式</a></li>
<li class="chapter" data-level="3.3.5" data-path="basic.html"><a href="basic.html#r代码的组成"><i class="fa fa-check"></i><b>3.3.5</b> R代码的组成</a></li>
</ul></li>
<li class="chapter" data-level="3.4" data-path="basic.html"><a href="basic.html#r对文件和路径的相关操作"><i class="fa fa-check"></i><b>3.4</b> R对文件和路径的相关操作</a>
<ul>
<li class="chapter" data-level="3.4.1" data-path="basic.html"><a href="basic.html#路径操作"><i class="fa fa-check"></i><b>3.4.1</b> 路径操作</a></li>
<li class="chapter" data-level="3.4.2" data-path="basic.html"><a href="basic.html#文件操作"><i class="fa fa-check"></i><b>3.4.2</b> 文件操作</a></li>
<li class="chapter" data-level="3.4.3" data-path="basic.html"><a href="basic.html#特殊路径"><i class="fa fa-check"></i><b>3.4.3</b> 特殊路径</a></li>
</ul></li>
<li class="chapter" data-level="3.5" data-path="basic.html"><a href="basic.html#数据类型"><i class="fa fa-check"></i><b>3.5</b> 数据类型</a>
<ul>
<li class="chapter" data-level="3.5.1" data-path="basic.html"><a href="basic.html#数值型"><i class="fa fa-check"></i><b>3.5.1</b> 数值型</a></li>
<li class="chapter" data-level="3.5.2" data-path="basic.html"><a href="basic.html#逻辑型布尔型"><i class="fa fa-check"></i><b>3.5.2</b> 逻辑型/布尔型</a></li>
<li class="chapter" data-level="3.5.3" data-path="basic.html"><a href="basic.html#字符型"><i class="fa fa-check"></i><b>3.5.3</b> 字符型</a></li>
<li class="chapter" data-level="3.5.4" data-path="basic.html"><a href="basic.html#缺失值"><i class="fa fa-check"></i><b>3.5.4</b> 缺失值</a></li>
<li class="chapter" data-level="3.5.5" data-path="basic.html"><a href="basic.html#数据类型判断与转换"><i class="fa fa-check"></i><b>3.5.5</b> 数据类型判断与转换</a></li>
<li class="chapter" data-level="3.5.6" data-path="basic.html"><a href="basic.html#运算"><i class="fa fa-check"></i><b>3.5.6</b> 运算</a></li>
</ul></li>
<li class="chapter" data-level="3.6" data-path="basic.html"><a href="basic.html#变量"><i class="fa fa-check"></i><b>3.6</b> 变量</a></li>
<li class="chapter" data-level="3.7" data-path="basic.html"><a href="basic.html#数据结构"><i class="fa fa-check"></i><b>3.7</b> 数据结构</a>
<ul>
<li class="chapter" data-level="3.7.1" data-path="basic.html"><a href="basic.html#向量"><i class="fa fa-check"></i><b>3.7.1</b> 向量</a></li>
<li class="chapter" data-level="3.7.2" data-path="basic.html"><a href="basic.html#因子"><i class="fa fa-check"></i><b>3.7.2</b> 因子</a></li>
<li class="chapter" data-level="3.7.3" data-path="basic.html"><a href="basic.html#矩阵"><i class="fa fa-check"></i><b>3.7.3</b> 矩阵</a></li>
<li class="chapter" data-level="3.7.4" data-path="basic.html"><a href="basic.html#数据框"><i class="fa fa-check"></i><b>3.7.4</b> 数据框</a></li>
<li class="chapter" data-level="3.7.5" data-path="basic.html"><a href="basic.html#列表"><i class="fa fa-check"></i><b>3.7.5</b> 列表</a></li>
<li class="chapter" data-level="3.7.6" data-path="basic.html"><a href="basic.html#数据结构之间的转化"><i class="fa fa-check"></i><b>3.7.6</b> 数据结构之间的转化</a></li>
</ul></li>
<li class="chapter" data-level="3.8" data-path="basic.html"><a href="basic.html#数据读写"><i class="fa fa-check"></i><b>3.8</b> 数据读写</a>
<ul>
<li class="chapter" data-level="3.8.1" data-path="basic.html"><a href="basic.html#csv文件"><i class="fa fa-check"></i><b>3.8.1</b> csv文件</a></li>
<li class="chapter" data-level="3.8.2" data-path="basic.html"><a href="basic.html#hdf5"><i class="fa fa-check"></i><b>3.8.2</b> HDF5</a></li>
<li class="chapter" data-level="3.8.3" data-path="basic.html"><a href="basic.html#xml"><i class="fa fa-check"></i><b>3.8.3</b> XML</a></li>
<li class="chapter" data-level="3.8.4" data-path="basic.html"><a href="basic.html#json"><i class="fa fa-check"></i><b>3.8.4</b> JSON</a></li>
<li class="chapter" data-level="3.8.5" data-path="basic.html"><a href="basic.html#yaml"><i class="fa fa-check"></i><b>3.8.5</b> YAML</a></li>
<li class="chapter" data-level="3.8.6" data-path="basic.html"><a href="basic.html#专用数据文件"><i class="fa fa-check"></i><b>3.8.6</b> 专用数据文件</a></li>
</ul></li>
<li class="chapter" data-level="3.9" data-path="basic.html"><a href="basic.html#流程控制"><i class="fa fa-check"></i><b>3.9</b> 流程控制</a>
<ul>
<li class="chapter" data-level="3.9.1" data-path="basic.html"><a href="basic.html#条件判断"><i class="fa fa-check"></i><b>3.9.1</b> 条件判断</a></li>
<li class="chapter" data-level="3.9.2" data-path="basic.html"><a href="basic.html#循环"><i class="fa fa-check"></i><b>3.9.2</b> 循环</a></li>
</ul></li>
<li class="chapter" data-level="3.10" data-path="basic.html"><a href="basic.html#函数与包"><i class="fa fa-check"></i><b>3.10</b> 函数与包</a>
<ul>
<li class="chapter" data-level="3.10.1" data-path="basic.html"><a href="basic.html#函数的定义与调用"><i class="fa fa-check"></i><b>3.10.1</b> 函数的定义与调用</a></li>
<li class="chapter" data-level="3.10.2" data-path="basic.html"><a href="basic.html#变量作用域"><i class="fa fa-check"></i><b>3.10.2</b> 变量作用域</a></li>
<li class="chapter" data-level="3.10.3" data-path="basic.html"><a href="basic.html#函数模块化"><i class="fa fa-check"></i><b>3.10.3</b> 函数模块化</a></li>
<li class="chapter" data-level="3.10.4" data-path="basic.html"><a href="basic.html#包"><i class="fa fa-check"></i><b>3.10.4</b> 包</a></li>
</ul></li>
<li class="chapter" data-level="3.11" data-path="basic.html"><a href="basic.html#向量化"><i class="fa fa-check"></i><b>3.11</b> 向量化</a>
<ul>
<li class="chapter" data-level="3.11.1" data-path="basic.html"><a href="basic.html#apply"><i class="fa fa-check"></i><b>3.11.1</b> apply</a></li>
<li class="chapter" data-level="3.11.2" data-path="basic.html"><a href="basic.html#lapply"><i class="fa fa-check"></i><b>3.11.2</b> lapply</a></li>
<li class="chapter" data-level="3.11.3" data-path="basic.html"><a href="basic.html#sapply"><i class="fa fa-check"></i><b>3.11.3</b> sapply</a></li>
<li class="chapter" data-level="3.11.4" data-path="basic.html"><a href="basic.html#vapply"><i class="fa fa-check"></i><b>3.11.4</b> vapply</a></li>
<li class="chapter" data-level="3.11.5" data-path="basic.html"><a href="basic.html#mapply"><i class="fa fa-check"></i><b>3.11.5</b> mapply</a></li>
<li class="chapter" data-level="3.11.6" data-path="basic.html"><a href="basic.html#其他"><i class="fa fa-check"></i><b>3.11.6</b> 其他</a></li>
</ul></li>
<li class="chapter" data-level="3.12" data-path="basic.html"><a href="basic.html#代码风格"><i class="fa fa-check"></i><b>3.12</b> 代码风格</a></li>
</ul></li>
<li class="chapter" data-level="4" data-path="rmd.html"><a href="rmd.html"><i class="fa fa-check"></i><b>4</b> 文学式编程</a>
<ul>
<li class="chapter" data-level="4.1" data-path="rmd.html"><a href="rmd.html#什么是文学式编程"><i class="fa fa-check"></i><b>4.1</b> 什么是文学式编程</a></li>
<li class="chapter" data-level="4.2" data-path="rmd.html"><a href="rmd.html#markdown格式"><i class="fa fa-check"></i><b>4.2</b> Markdown格式</a>
<ul>
<li class="chapter" data-level="4.2.1" data-path="rmd.html"><a href="rmd.html#标题"><i class="fa fa-check"></i><b>4.2.1</b> 标题</a></li>
<li class="chapter" data-level="4.2.2" data-path="rmd.html"><a href="rmd.html#段落文本"><i class="fa fa-check"></i><b>4.2.2</b> 段落文本</a></li>
<li class="chapter" data-level="4.2.3" data-path="rmd.html"><a href="rmd.html#表格"><i class="fa fa-check"></i><b>4.2.3</b> 表格</a></li>
<li class="chapter" data-level="4.2.4" data-path="rmd.html"><a href="rmd.html#图片"><i class="fa fa-check"></i><b>4.2.4</b> 图片</a></li>
<li class="chapter" data-level="4.2.5" data-path="rmd.html"><a href="rmd.html#代码块"><i class="fa fa-check"></i><b>4.2.5</b> 代码块</a></li>
<li class="chapter" data-level="4.2.6" data-path="rmd.html"><a href="rmd.html#数学公式"><i class="fa fa-check"></i><b>4.2.6</b> 数学公式</a></li>
</ul></li>
<li class="chapter" data-level="4.3" data-path="rmd.html"><a href="rmd.html#rmarkdown"><i class="fa fa-check"></i><b>4.3</b> Rmarkdown</a>
<ul>
<li class="chapter" data-level="4.3.1" data-path="rmd.html"><a href="rmd.html#yaml头文件"><i class="fa fa-check"></i><b>4.3.1</b> YAML头文件</a></li>
<li class="chapter" data-level="4.3.2" data-path="rmd.html"><a href="rmd.html#代码块控制"><i class="fa fa-check"></i><b>4.3.2</b> 代码块控制</a></li>
<li class="chapter" data-level="4.3.3" data-path="rmd.html"><a href="rmd.html#rmarkdown特殊语法"><i class="fa fa-check"></i><b>4.3.3</b> Rmarkdown特殊语法</a></li>
<li class="chapter" data-level="4.3.4" data-path="rmd.html"><a href="rmd.html#格式转换"><i class="fa fa-check"></i><b>4.3.4</b> 格式转换</a></li>
</ul></li>
<li class="chapter" data-level="4.4" data-path="rmd.html"><a href="rmd.html#xaringan"><i class="fa fa-check"></i><b>4.4</b> Xaringan</a>
<ul>
<li class="chapter" data-level="4.4.1" data-path="rmd.html"><a href="rmd.html#安装与模板"><i class="fa fa-check"></i><b>4.4.1</b> 安装与模板</a></li>
<li class="chapter" data-level="4.4.2" data-path="rmd.html"><a href="rmd.html#其他学习资源"><i class="fa fa-check"></i><b>4.4.2</b> 其他学习资源</a></li>
</ul></li>
<li class="chapter" data-level="4.5" data-path="rmd.html"><a href="rmd.html#leanr"><i class="fa fa-check"></i><b>4.5</b> leanr</a>
<ul>
<li class="chapter" data-level="4.5.1" data-path="rmd.html"><a href="rmd.html#安装与模板-1"><i class="fa fa-check"></i><b>4.5.1</b> 安装与模板</a></li>
<li class="chapter" data-level="4.5.2" data-path="rmd.html"><a href="rmd.html#互动代码模块"><i class="fa fa-check"></i><b>4.5.2</b> 互动代码模块</a></li>
<li class="chapter" data-level="4.5.3" data-path="rmd.html"><a href="rmd.html#测试题"><i class="fa fa-check"></i><b>4.5.3</b> 测试题</a></li>
</ul></li>
<li class="chapter" data-level="4.6" data-path="rmd.html"><a href="rmd.html#bookdownblogdown以及pagedown"><i class="fa fa-check"></i><b>4.6</b> bookdown、blogdown以及pagedown</a></li>
<li class="chapter" data-level="4.7" data-path="rmd.html"><a href="rmd.html#quarto"><i class="fa fa-check"></i><b>4.7</b> Quarto</a></li>
</ul></li>
<li class="chapter" data-level="5" data-path="manipulate.html"><a href="manipulate.html"><i class="fa fa-check"></i><b>5</b> 数据整理</a>
<ul>
<li class="chapter" data-level="5.1" data-path="manipulate.html"><a href="manipulate.html#整齐数据tidydata"><i class="fa fa-check"></i><b>5.1</b> 整齐数据tidydata</a>
<ul>
<li class="chapter" data-level="5.1.1" data-path="manipulate.html"><a href="manipulate.html#分析单位unit-of-analysis"><i class="fa fa-check"></i><b>5.1.1</b> 分析单位(unit of analysis)</a></li>
</ul></li>
<li class="chapter" data-level="5.2" data-path="manipulate.html"><a href="manipulate.html#整齐数据"><i class="fa fa-check"></i><b>5.2</b> 整齐数据</a>
<ul>
<li class="chapter" data-level="5.2.1" data-path="manipulate.html"><a href="manipulate.html#整齐数据的缘起"><i class="fa fa-check"></i><b>5.2.1</b> 整齐数据的缘起</a></li>
<li class="chapter" data-level="5.2.2" data-path="manipulate.html"><a href="manipulate.html#整齐数据的定义"><i class="fa fa-check"></i><b>5.2.2</b> 整齐数据的定义</a></li>
<li class="chapter" data-level="5.2.3" data-path="manipulate.html"><a href="manipulate.html#数据的凌乱点"><i class="fa fa-check"></i><b>5.2.3</b> 数据的凌乱点</a></li>
</ul></li>
<li class="chapter" data-level="5.3" data-path="manipulate.html"><a href="manipulate.html#关系代数"><i class="fa fa-check"></i><b>5.3</b> 关系代数</a>
<ul>
<li class="chapter" data-level="5.3.1" data-path="manipulate.html"><a href="manipulate.html#sql语言"><i class="fa fa-check"></i><b>5.3.1</b> SQL语言</a></li>
</ul></li>
<li class="chapter" data-level="5.4" data-path="manipulate.html"><a href="manipulate.html#sqlite3"><i class="fa fa-check"></i><b>5.4</b> SQLite3</a>
<ul>
<li class="chapter" data-level="5.4.1" data-path="manipulate.html"><a href="manipulate.html#安装"><i class="fa fa-check"></i><b>5.4.1</b> 安装</a></li>
<li class="chapter" data-level="5.4.2" data-path="manipulate.html"><a href="manipulate.html#数据类型-1"><i class="fa fa-check"></i><b>5.4.2</b> 数据类型</a></li>
<li class="chapter" data-level="5.4.3" data-path="manipulate.html"><a href="manipulate.html#新建数据库与表格"><i class="fa fa-check"></i><b>5.4.3</b> 新建数据库与表格</a></li>
<li class="chapter" data-level="5.4.4" data-path="manipulate.html"><a href="manipulate.html#集合运算"><i class="fa fa-check"></i><b>5.4.4</b> 集合运算</a></li>
<li class="chapter" data-level="5.4.5" data-path="manipulate.html"><a href="manipulate.html#线性运算"><i class="fa fa-check"></i><b>5.4.5</b> 线性运算</a></li>
<li class="chapter" data-level="5.4.6" data-path="manipulate.html"><a href="manipulate.html#数据连接"><i class="fa fa-check"></i><b>5.4.6</b> 数据连接</a></li>
<li class="chapter" data-level="5.4.7" data-path="manipulate.html"><a href="manipulate.html#数据分组与汇总"><i class="fa fa-check"></i><b>5.4.7</b> 数据分组与汇总</a></li>
<li class="chapter" data-level="5.4.8" data-path="manipulate.html"><a href="manipulate.html#其他-1"><i class="fa fa-check"></i><b>5.4.8</b> 其他</a></li>
<li class="chapter" data-level="5.4.9" data-path="manipulate.html"><a href="manipulate.html#数据读写-1"><i class="fa fa-check"></i><b>5.4.9</b> 数据读写</a></li>
<li class="chapter" data-level="5.4.10" data-path="manipulate.html"><a href="manipulate.html#索引与键"><i class="fa fa-check"></i><b>5.4.10</b> 索引与键</a></li>
</ul></li>
<li class="chapter" data-level="5.5" data-path="manipulate.html"><a href="manipulate.html#mysql"><i class="fa fa-check"></i><b>5.5</b> MySQL</a>
<ul>
<li class="chapter" data-level="5.5.1" data-path="manipulate.html"><a href="manipulate.html#基本命令"><i class="fa fa-check"></i><b>5.5.1</b> 基本命令</a></li>
</ul></li>
<li class="chapter" data-level="5.6" data-path="manipulate.html"><a href="manipulate.html#postgresql"><i class="fa fa-check"></i><b>5.6</b> Postgresql</a></li>
<li class="chapter" data-level="5.7" data-path="manipulate.html"><a href="manipulate.html#dplyr"><i class="fa fa-check"></i><b>5.7</b> dplyr</a>
<ul>
<li class="chapter" data-level="5.7.1" data-path="manipulate.html"><a href="manipulate.html#集合运算-1"><i class="fa fa-check"></i><b>5.7.1</b> 集合运算</a></li>
<li class="chapter" data-level="5.7.2" data-path="manipulate.html"><a href="manipulate.html#线性运算-1"><i class="fa fa-check"></i><b>5.7.2</b> 线性运算</a></li>
<li class="chapter" data-level="5.7.3" data-path="manipulate.html"><a href="manipulate.html#管道"><i class="fa fa-check"></i><b>5.7.3</b> 管道</a></li>
<li class="chapter" data-level="5.7.4" data-path="manipulate.html"><a href="manipulate.html#数据连接-1"><i class="fa fa-check"></i><b>5.7.4</b> 数据连接</a></li>
<li class="chapter" data-level="5.7.5" data-path="manipulate.html"><a href="manipulate.html#数据分组与汇总-1"><i class="fa fa-check"></i><b>5.7.5</b> 数据分组与汇总</a></li>
</ul></li>
<li class="chapter" data-level="5.8" data-path="manipulate.html"><a href="manipulate.html#宽数据与长数据的转换"><i class="fa fa-check"></i><b>5.8</b> 宽数据与长数据的转换</a>
<ul>
<li class="chapter" data-level="5.8.1" data-path="manipulate.html"><a href="manipulate.html#宽数据转长数据"><i class="fa fa-check"></i><b>5.8.1</b> 宽数据转长数据</a></li>
<li class="chapter" data-level="5.8.2" data-path="manipulate.html"><a href="manipulate.html#长数据转宽数据"><i class="fa fa-check"></i><b>5.8.2</b> 长数据转宽数据</a></li>
<li class="chapter" data-level="5.8.3" data-path="manipulate.html"><a href="manipulate.html#联系人数据表的案例"><i class="fa fa-check"></i><b>5.8.3</b> 联系人数据表的案例</a></li>
</ul></li>
<li class="chapter" data-level="5.9" data-path="manipulate.html"><a href="manipulate.html#其他定制操作"><i class="fa fa-check"></i><b>5.9</b> 其他定制操作</a>
<ul>
<li class="chapter" data-level="5.9.1" data-path="manipulate.html"><a href="manipulate.html#排序"><i class="fa fa-check"></i><b>5.9.1</b> 排序</a></li>
<li class="chapter" data-level="5.9.2" data-path="manipulate.html"><a href="manipulate.html#抽样"><i class="fa fa-check"></i><b>5.9.2</b> 抽样</a></li>
<li class="chapter" data-level="5.9.3" data-path="manipulate.html"><a href="manipulate.html#去重复"><i class="fa fa-check"></i><b>5.9.3</b> 去重复</a></li>
<li class="chapter" data-level="5.9.4" data-path="manipulate.html"><a href="manipulate.html#缺失值处理"><i class="fa fa-check"></i><b>5.9.4</b> 缺失值处理</a></li>
<li class="chapter" data-level="5.9.5" data-path="manipulate.html"><a href="manipulate.html#拆分与合并数据列"><i class="fa fa-check"></i><b>5.9.5</b> 拆分与合并数据列</a></li>
<li class="chapter" data-level="5.9.6" data-path="manipulate.html"><a href="manipulate.html#合并数据"><i class="fa fa-check"></i><b>5.9.6</b> 合并数据</a></li>
</ul></li>
<li class="chapter" data-level="5.10" data-path="manipulate.html"><a href="manipulate.html#数据库的连接"><i class="fa fa-check"></i><b>5.10</b> 数据库的连接</a>
<ul>
<li class="chapter" data-level="5.10.1" data-path="manipulate.html"><a href="manipulate.html#r与数据库"><i class="fa fa-check"></i><b>5.10.1</b> R与数据库</a></li>
<li class="chapter" data-level="5.10.2" data-path="manipulate.html"><a href="manipulate.html#python与数据库"><i class="fa fa-check"></i><b>5.10.2</b> Python与数据库</a></li>
</ul></li>
<li class="chapter" data-level="5.11" data-path="manipulate.html"><a href="manipulate.html#data.table"><i class="fa fa-check"></i><b>5.11</b> data.table</a></li>
</ul></li>
<li class="chapter" data-level="6" data-path="visu.html"><a href="visu.html"><i class="fa fa-check"></i><b>6</b> 数据可视化</a>
<ul>
<li class="chapter" data-level="6.1" data-path="visu.html"><a href="visu.html#从一个可以画恐龙的包说起"><i class="fa fa-check"></i><b>6.1</b> 从一个可以画恐龙的包说起</a></li>
<li class="chapter" data-level="6.2" data-path="visu.html"><a href="visu.html#数据可视化的目的"><i class="fa fa-check"></i><b>6.2</b> 数据可视化的目的</a></li>
<li class="chapter" data-level="6.3" data-path="visu.html"><a href="visu.html#图形语法grammar-of-graphics"><i class="fa fa-check"></i><b>6.3</b> 图形语法（Grammar of Graphics）</a></li>
<li class="chapter" data-level="6.4" data-path="visu.html"><a href="visu.html#ggplot2"><i class="fa fa-check"></i><b>6.4</b> <code>ggplot2</code></a>
<ul>
<li class="chapter" data-level="6.4.1" data-path="visu.html"><a href="visu.html#几何对象"><i class="fa fa-check"></i><b>6.4.1</b> 几何对象</a></li>
<li class="chapter" data-level="6.4.2" data-path="visu.html"><a href="visu.html#美术属性"><i class="fa fa-check"></i><b>6.4.2</b> 美术属性</a></li>
<li class="chapter" data-level="6.4.3" data-path="visu.html"><a href="visu.html#统计变换"><i class="fa fa-check"></i><b>6.4.3</b> 统计变换</a></li>
<li class="chapter" data-level="6.4.4" data-path="visu.html"><a href="visu.html#标尺"><i class="fa fa-check"></i><b>6.4.4</b> 标尺</a></li>
<li class="chapter" data-level="6.4.5" data-path="visu.html"><a href="visu.html#坐标系"><i class="fa fa-check"></i><b>6.4.5</b> 坐标系</a></li>
<li class="chapter" data-level="6.4.6" data-path="visu.html"><a href="visu.html#分面"><i class="fa fa-check"></i><b>6.4.6</b> 分面</a></li>
<li class="chapter" data-level="6.4.7" data-path="visu.html"><a href="visu.html#标签与图例"><i class="fa fa-check"></i><b>6.4.7</b> 标签与图例</a></li>
<li class="chapter" data-level="6.4.8" data-path="visu.html"><a href="visu.html#主题"><i class="fa fa-check"></i><b>6.4.8</b> 主题</a></li>
<li class="chapter" data-level="6.4.9" data-path="visu.html"><a href="visu.html#图例"><i class="fa fa-check"></i><b>6.4.9</b> 图例</a></li>
<li class="chapter" data-level="6.4.10" data-path="visu.html"><a href="visu.html#图形组合"><i class="fa fa-check"></i><b>6.4.10</b> 图形组合</a></li>
</ul></li>
<li class="chapter" data-level="6.5" data-path="visu.html"><a href="visu.html#调色板"><i class="fa fa-check"></i><b>6.5</b> 调色板</a>
<ul>
<li class="chapter" data-level="6.5.1" data-path="visu.html"><a href="visu.html#ggsci"><i class="fa fa-check"></i><b>6.5.1</b> ggsci</a></li>
<li class="chapter" data-level="6.5.2" data-path="visu.html"><a href="visu.html#colorspace"><i class="fa fa-check"></i><b>6.5.2</b> colorspace</a></li>
</ul></li>
<li class="chapter" data-level="6.6" data-path="visu.html"><a href="visu.html#动图"><i class="fa fa-check"></i><b>6.6</b> 动图</a></li>
<li class="chapter" data-level="6.7" data-path="visu.html"><a href="visu.html#交互图"><i class="fa fa-check"></i><b>6.7</b> 交互图</a></li>
<li class="chapter" data-level="6.8" data-path="visu.html"><a href="visu.html#数据大屏dashboard"><i class="fa fa-check"></i><b>6.8</b> 数据大屏Dashboard</a>
<ul>
<li class="chapter" data-level="6.8.1" data-path="visu.html"><a href="visu.html#flexdashboard安装"><i class="fa fa-check"></i><b>6.8.1</b> flexdashboard安装</a></li>
<li class="chapter" data-level="6.8.2" data-path="visu.html"><a href="visu.html#新建dashboard"><i class="fa fa-check"></i><b>6.8.2</b> 新建dashboard</a></li>
<li class="chapter" data-level="6.8.3" data-path="visu.html"><a href="visu.html#dashboard布局"><i class="fa fa-check"></i><b>6.8.3</b> dashboard布局</a></li>
</ul></li>
<li class="chapter" data-level="6.9" data-path="visu.html"><a href="visu.html#其他参考资料"><i class="fa fa-check"></i><b>6.9</b> 其他参考资料</a></li>
</ul></li>
<li class="chapter" data-level="7" data-path="reg.html"><a href="reg.html"><i class="fa fa-check"></i><b>7</b> 回归</a>
<ul>
<li class="chapter" data-level="7.1" data-path="reg.html"><a href="reg.html#一般线性回归"><i class="fa fa-check"></i><b>7.1</b> 一般线性回归</a>
<ul>
<li class="chapter" data-level="7.1.1" data-path="reg.html"><a href="reg.html#基础模型"><i class="fa fa-check"></i><b>7.1.1</b> 基础模型</a></li>
<li class="chapter" data-level="7.1.2" data-path="reg.html"><a href="reg.html#稳健性标准误"><i class="fa fa-check"></i><b>7.1.2</b> 稳健性标准误</a></li>
</ul></li>
<li class="chapter" data-level="7.2" data-path="reg.html"><a href="reg.html#因果推断的反事实框架"><i class="fa fa-check"></i><b>7.2</b> 因果推断的反事实框架</a>
<ul>
<li class="chapter" data-level="7.2.1" data-path="reg.html"><a href="reg.html#定义因果关系"><i class="fa fa-check"></i><b>7.2.1</b> 定义因果关系</a></li>
<li class="chapter" data-level="7.2.2" data-path="reg.html"><a href="reg.html#cef三定理"><i class="fa fa-check"></i><b>7.2.2</b> CEF三定理</a></li>
<li class="chapter" data-level="7.2.3" data-path="reg.html"><a href="reg.html#交互项还是分组回归"><i class="fa fa-check"></i><b>7.2.3</b> 交互项还是分组回归</a></li>
</ul></li>
<li class="chapter" data-level="7.3" data-path="reg.html"><a href="reg.html#匹配"><i class="fa fa-check"></i><b>7.3</b> 匹配</a>
<ul>
<li class="chapter" data-level="7.3.1" data-path="reg.html"><a href="reg.html#原理"><i class="fa fa-check"></i><b>7.3.1</b> 原理</a></li>
<li class="chapter" data-level="7.3.2" data-path="reg.html"><a href="reg.html#案例"><i class="fa fa-check"></i><b>7.3.2</b> 案例</a></li>
</ul></li>
<li class="chapter" data-level="7.4" data-path="reg.html"><a href="reg.html#工具变量"><i class="fa fa-check"></i><b>7.4</b> 工具变量</a>
<ul>
<li class="chapter" data-level="7.4.1" data-path="reg.html"><a href="reg.html#原理-1"><i class="fa fa-check"></i><b>7.4.1</b> 原理</a></li>
<li class="chapter" data-level="7.4.2" data-path="reg.html"><a href="reg.html#案例-1"><i class="fa fa-check"></i><b>7.4.2</b> 案例</a></li>
</ul></li>
<li class="chapter" data-level="7.5" data-path="reg.html"><a href="reg.html#双重差分"><i class="fa fa-check"></i><b>7.5</b> 双重差分</a>
<ul>
<li class="chapter" data-level="7.5.1" data-path="reg.html"><a href="reg.html#原理-2"><i class="fa fa-check"></i><b>7.5.1</b> 原理</a></li>
<li class="chapter" data-level="7.5.2" data-path="reg.html"><a href="reg.html#案例-2"><i class="fa fa-check"></i><b>7.5.2</b> 案例</a></li>
</ul></li>
<li class="chapter" data-level="7.6" data-path="reg.html"><a href="reg.html#断点回归"><i class="fa fa-check"></i><b>7.6</b> 断点回归</a>
<ul>
<li class="chapter" data-level="7.6.1" data-path="reg.html"><a href="reg.html#原理-3"><i class="fa fa-check"></i><b>7.6.1</b> 原理</a></li>
<li class="chapter" data-level="7.6.2" data-path="reg.html"><a href="reg.html#案例-3"><i class="fa fa-check"></i><b>7.6.2</b> 案例</a></li>
</ul></li>
<li class="chapter" data-level="7.7" data-path="reg.html"><a href="reg.html#包含高维分类变量的回归"><i class="fa fa-check"></i><b>7.7</b> 包含高维分类变量的回归</a></li>
<li class="chapter" data-level="7.8" data-path="reg.html"><a href="reg.html#formula-公式对象"><i class="fa fa-check"></i><b>7.8</b> formula (公式)对象</a>
<ul>
<li class="chapter" data-level="7.8.1" data-path="reg.html"><a href="reg.html#公式的生成"><i class="fa fa-check"></i><b>7.8.1</b> 公式的生成</a></li>
<li class="chapter" data-level="7.8.2" data-path="reg.html"><a href="reg.html#生成公式的运算符"><i class="fa fa-check"></i><b>7.8.2</b> 生成公式的运算符</a></li>
<li class="chapter" data-level="7.8.3" data-path="reg.html"><a href="reg.html#公式与字符串之间的转换"><i class="fa fa-check"></i><b>7.8.3</b> 公式与字符串之间的转换</a></li>
</ul></li>
<li class="chapter" data-level="7.9" data-path="reg.html"><a href="reg.html#表达式expression"><i class="fa fa-check"></i><b>7.9</b> 表达式expression</a></li>
<li class="chapter" data-level="7.10" data-path="reg.html"><a href="reg.html#表达式的生成与执行"><i class="fa fa-check"></i><b>7.10</b> 表达式的生成与执行</a></li>
<li class="chapter" data-level="7.11" data-path="reg.html"><a href="reg.html#表达式与字符串的转换"><i class="fa fa-check"></i><b>7.11</b> 表达式与字符串的转换</a></li>
<li class="chapter" data-level="7.12" data-path="reg.html"><a href="reg.html#使用stargazer输出表格"><i class="fa fa-check"></i><b>7.12</b> 使用stargazer输出表格</a>
<ul>
<li class="chapter" data-level="7.12.1" data-path="reg.html"><a href="reg.html#标准回归表"><i class="fa fa-check"></i><b>7.12.1</b> 标准回归表</a></li>
<li class="chapter" data-level="7.12.2" data-path="reg.html"><a href="reg.html#默认格式"><i class="fa fa-check"></i><b>7.12.2</b> 默认格式</a></li>
<li class="chapter" data-level="7.12.3" data-path="reg.html"><a href="reg.html#表格表头"><i class="fa fa-check"></i><b>7.12.3</b> 表格表头</a></li>
<li class="chapter" data-level="7.12.4" data-path="reg.html"><a href="reg.html#表格正文"><i class="fa fa-check"></i><b>7.12.4</b> 表格正文</a></li>
<li class="chapter" data-level="7.12.5" data-path="reg.html"><a href="reg.html#添加变量信息"><i class="fa fa-check"></i><b>7.12.5</b> 添加变量信息</a></li>
<li class="chapter" data-level="7.12.6" data-path="reg.html"><a href="reg.html#选择统计量"><i class="fa fa-check"></i><b>7.12.6</b> 选择统计量</a></li>
<li class="chapter" data-level="7.12.7" data-path="reg.html"><a href="reg.html#表格注释"><i class="fa fa-check"></i><b>7.12.7</b> 表格注释</a></li>
<li class="chapter" data-level="7.12.8" data-path="reg.html"><a href="reg.html#整体布局"><i class="fa fa-check"></i><b>7.12.8</b> 整体布局</a></li>
<li class="chapter" data-level="7.12.9" data-path="reg.html"><a href="reg.html#其他-2"><i class="fa fa-check"></i><b>7.12.9</b> 其他</a></li>
<li class="chapter" data-level="7.12.10" data-path="reg.html"><a href="reg.html#描述性统计表"><i class="fa fa-check"></i><b>7.12.10</b> 描述性统计表</a></li>
</ul></li>
<li class="chapter" data-level="7.13" data-path="reg.html"><a href="reg.html#回归结果的可视化"><i class="fa fa-check"></i><b>7.13</b> 回归结果的可视化</a>
<ul>
<li class="chapter" data-level="7.13.1" data-path="reg.html"><a href="reg.html#使用ggcoefstats可视化回归结果"><i class="fa fa-check"></i><b>7.13.1</b> 使用ggcoefstats可视化回归结果</a></li>
<li class="chapter" data-level="7.13.2" data-path="reg.html"><a href="reg.html#使用"><i class="fa fa-check"></i><b>7.13.2</b> 使用</a></li>
<li class="chapter" data-level="7.13.3" data-path="reg.html"><a href="reg.html#双重差分模型的可视化"><i class="fa fa-check"></i><b>7.13.3</b> 双重差分模型的可视化</a></li>
</ul></li>
</ul></li>
<li class="chapter" data-level="8" data-path="py.html"><a href="py.html"><i class="fa fa-check"></i><b>8</b> Python基础</a>
<ul>
<li class="chapter" data-level="8.1" data-path="py.html"><a href="py.html#python简介"><i class="fa fa-check"></i><b>8.1</b> Python简介</a></li>
<li class="chapter" data-level="8.2" data-path="py.html"><a href="py.html#python安装与pycharm"><i class="fa fa-check"></i><b>8.2</b> Python安装与Pycharm</a>
<ul>
<li class="chapter" data-level="8.2.1" data-path="py.html"><a href="py.html#安装-2"><i class="fa fa-check"></i><b>8.2.1</b> 安装</a></li>
<li class="chapter" data-level="8.2.2" data-path="py.html"><a href="py.html#编辑器-1"><i class="fa fa-check"></i><b>8.2.2</b> 编辑器</a></li>
<li class="chapter" data-level="8.2.3" data-path="py.html"><a href="py.html#pycharm的安装与教育许可证"><i class="fa fa-check"></i><b>8.2.3</b> Pycharm的安装与教育许可证</a></li>
</ul></li>
<li class="chapter" data-level="8.3" data-path="py.html"><a href="py.html#变量-1"><i class="fa fa-check"></i><b>8.3</b> 变量</a></li>
<li class="chapter" data-level="8.4" data-path="py.html"><a href="py.html#数据类型-2"><i class="fa fa-check"></i><b>8.4</b> 数据类型</a>
<ul>
<li class="chapter" data-level="8.4.1" data-path="py.html"><a href="py.html#类型转换"><i class="fa fa-check"></i><b>8.4.1</b> 类型转换</a></li>
<li class="chapter" data-level="8.4.2" data-path="py.html"><a href="py.html#算术运算"><i class="fa fa-check"></i><b>8.4.2</b> 算术运算</a></li>
<li class="chapter" data-level="8.4.3" data-path="py.html"><a href="py.html#布尔运算"><i class="fa fa-check"></i><b>8.4.3</b> 布尔运算</a></li>
<li class="chapter" data-level="8.4.4" data-path="py.html"><a href="py.html#字符串"><i class="fa fa-check"></i><b>8.4.4</b> 字符串</a></li>
<li class="chapter" data-level="8.4.5" data-path="py.html"><a href="py.html#字符串的替换"><i class="fa fa-check"></i><b>8.4.5</b> 字符串的替换</a></li>
<li class="chapter" data-level="8.4.6" data-path="py.html"><a href="py.html#字符串的切片"><i class="fa fa-check"></i><b>8.4.6</b> 字符串的切片</a></li>
<li class="chapter" data-level="8.4.7" data-path="py.html"><a href="py.html#标准字符串操作"><i class="fa fa-check"></i><b>8.4.7</b> 标准字符串操作</a></li>
</ul></li>
<li class="chapter" data-level="8.5" data-path="py.html"><a href="py.html#标准输入输出"><i class="fa fa-check"></i><b>8.5</b> 标准输入输出</a>
<ul>
<li class="chapter" data-level="8.5.1" data-path="py.html"><a href="py.html#标准输入"><i class="fa fa-check"></i><b>8.5.1</b> 标准输入</a></li>
<li class="chapter" data-level="8.5.2" data-path="py.html"><a href="py.html#命令执行"><i class="fa fa-check"></i><b>8.5.2</b> 命令执行</a></li>
</ul></li>
<li class="chapter" data-level="8.6" data-path="py.html"><a href="py.html#数据结构-1"><i class="fa fa-check"></i><b>8.6</b> 数据结构</a>
<ul>
<li class="chapter" data-level="8.6.1" data-path="py.html"><a href="py.html#列表-1"><i class="fa fa-check"></i><b>8.6.1</b> 列表</a></li>
<li class="chapter" data-level="8.6.2" data-path="py.html"><a href="py.html#元组"><i class="fa fa-check"></i><b>8.6.2</b> 元组</a></li>
<li class="chapter" data-level="8.6.3" data-path="py.html"><a href="py.html#字典"><i class="fa fa-check"></i><b>8.6.3</b> 字典</a></li>
<li class="chapter" data-level="8.6.4" data-path="py.html"><a href="py.html#数据结构之间的转化-1"><i class="fa fa-check"></i><b>8.6.4</b> 数据结构之间的转化</a></li>
</ul></li>
<li class="chapter" data-level="8.7" data-path="py.html"><a href="py.html#流程控制-1"><i class="fa fa-check"></i><b>8.7</b> 流程控制</a>
<ul>
<li class="chapter" data-level="8.7.1" data-path="py.html"><a href="py.html#条件判断-1"><i class="fa fa-check"></i><b>8.7.1</b> 条件判断</a></li>
<li class="chapter" data-level="8.7.2" data-path="py.html"><a href="py.html#循环-1"><i class="fa fa-check"></i><b>8.7.2</b> 循环</a></li>
</ul></li>
<li class="chapter" data-level="8.8" data-path="py.html"><a href="py.html#函数与模块"><i class="fa fa-check"></i><b>8.8</b> 函数与模块</a>
<ul>
<li class="chapter" data-level="8.8.1" data-path="py.html"><a href="py.html#批量调用"><i class="fa fa-check"></i><b>8.8.1</b> 批量调用</a></li>
<li class="chapter" data-level="8.8.2" data-path="py.html"><a href="py.html#无名函数"><i class="fa fa-check"></i><b>8.8.2</b> 无名函数</a></li>
<li class="chapter" data-level="8.8.3" data-path="py.html"><a href="py.html#函数文档"><i class="fa fa-check"></i><b>8.8.3</b> 函数文档</a></li>
<li class="chapter" data-level="8.8.4" data-path="py.html"><a href="py.html#模块"><i class="fa fa-check"></i><b>8.8.4</b> 模块</a></li>
</ul></li>
<li class="chapter" data-level="8.9" data-path="py.html"><a href="py.html#数据读写与文件操作"><i class="fa fa-check"></i><b>8.9</b> 数据读写与文件操作</a>
<ul>
<li class="chapter" data-level="8.9.1" data-path="py.html"><a href="py.html#读入文件"><i class="fa fa-check"></i><b>8.9.1</b> 读入文件</a></li>
<li class="chapter" data-level="8.9.2" data-path="py.html"><a href="py.html#写出文件"><i class="fa fa-check"></i><b>8.9.2</b> 写出文件</a></li>
<li class="chapter" data-level="8.9.3" data-path="py.html"><a href="py.html#with关键字"><i class="fa fa-check"></i><b>8.9.3</b> with关键字</a></li>
</ul></li>
<li class="chapter" data-level="8.10" data-path="py.html"><a href="py.html#os模块"><i class="fa fa-check"></i><b>8.10</b> os模块</a></li>
<li class="chapter" data-level="8.11" data-path="py.html"><a href="py.html#python的环境配置"><i class="fa fa-check"></i><b>8.11</b> Python的环境配置</a></li>
<li class="chapter" data-level="8.12" data-path="py.html"><a href="py.html#案例获取高德地图地址信息"><i class="fa fa-check"></i><b>8.12</b> 案例：获取高德地图地址信息</a></li>
<li class="chapter" data-level="8.13" data-path="py.html"><a href="py.html#面向对象单独成一章"><i class="fa fa-check"></i><b>8.13</b> 面向对象单独成一章</a></li>
</ul></li>
<li class="chapter" data-level="9" data-path="regexp.html"><a href="regexp.html"><i class="fa fa-check"></i><b>9</b> 正则表达式</a>
<ul>
<li class="chapter" data-level="9.1" data-path="regexp.html"><a href="regexp.html#语法要素"><i class="fa fa-check"></i><b>9.1</b> 语法要素</a>
<ul>
<li class="chapter" data-level="9.1.1" data-path="regexp.html"><a href="regexp.html#元字符"><i class="fa fa-check"></i><b>9.1.1</b> 元字符</a></li>
<li class="chapter" data-level="9.1.2" data-path="regexp.html"><a href="regexp.html#重复"><i class="fa fa-check"></i><b>9.1.2</b> 重复</a></li>
<li class="chapter" data-level="9.1.3" data-path="regexp.html"><a href="regexp.html#常用字符集"><i class="fa fa-check"></i><b>9.1.3</b> 常用字符集</a></li>
<li class="chapter" data-level="9.1.4" data-path="regexp.html"><a href="regexp.html#分组"><i class="fa fa-check"></i><b>9.1.4</b> 分组</a></li>
<li class="chapter" data-level="9.1.5" data-path="regexp.html"><a href="regexp.html#非捕获组与断言"><i class="fa fa-check"></i><b>9.1.5</b> 非捕获组与断言</a></li>
</ul></li>
<li class="chapter" data-level="9.2" data-path="regexp.html"><a href="regexp.html#r语言stringr包"><i class="fa fa-check"></i><b>9.2</b> R语言stringr包</a>
<ul>
<li class="chapter" data-level="9.2.1" data-path="regexp.html"><a href="regexp.html#stringr包"><i class="fa fa-check"></i><b>9.2.1</b> stringr包</a></li>
<li class="chapter" data-level="9.2.2" data-path="regexp.html"><a href="regexp.html#应用案例wos数据分析"><i class="fa fa-check"></i><b>9.2.2</b> 应用案例：wos数据分析</a></li>
<li class="chapter" data-level="9.2.3" data-path="regexp.html"><a href="regexp.html#应用案例数据合并与校对"><i class="fa fa-check"></i><b>9.2.3</b> 应用案例：数据合并与校对</a></li>
</ul></li>
<li class="chapter" data-level="9.3" data-path="regexp.html"><a href="regexp.html#python的re模块"><i class="fa fa-check"></i><b>9.3</b> Python的re模块</a>
<ul>
<li class="chapter" data-level="9.3.1" data-path="regexp.html"><a href="regexp.html#原生字符串"><i class="fa fa-check"></i><b>9.3.1</b> 原生字符串</a></li>
<li class="chapter" data-level="9.3.2" data-path="regexp.html"><a href="regexp.html#编译"><i class="fa fa-check"></i><b>9.3.2</b> 编译</a></li>
<li class="chapter" data-level="9.3.3" data-path="regexp.html"><a href="regexp.html#匹配-1"><i class="fa fa-check"></i><b>9.3.3</b> 匹配</a></li>
<li class="chapter" data-level="9.3.4" data-path="regexp.html"><a href="regexp.html#分割"><i class="fa fa-check"></i><b>9.3.4</b> 分割</a></li>
<li class="chapter" data-level="9.3.5" data-path="regexp.html"><a href="regexp.html#替换"><i class="fa fa-check"></i><b>9.3.5</b> 替换</a></li>
<li class="chapter" data-level="9.3.6" data-path="regexp.html"><a href="regexp.html#命名组"><i class="fa fa-check"></i><b>9.3.6</b> 命名组</a></li>
</ul></li>
</ul></li>
<li class="chapter" data-level="10" data-path="cml.html"><a href="cml.html"><i class="fa fa-check"></i><b>10</b> 命令行</a>
<ul>
<li class="chapter" data-level="10.1" data-path="cml.html"><a href="cml.html#命令的基本概念"><i class="fa fa-check"></i><b>10.1</b> 命令的基本概念</a>
<ul>
<li class="chapter" data-level="10.1.1" data-path="cml.html"><a href="cml.html#fish"><i class="fa fa-check"></i><b>10.1.1</b> fish</a></li>
<li class="chapter" data-level="10.1.2" data-path="cml.html"><a href="cml.html#常用命令"><i class="fa fa-check"></i><b>10.1.2</b> 常用命令</a></li>
<li class="chapter" data-level="10.1.3" data-path="cml.html"><a href="cml.html#标准输入与输出"><i class="fa fa-check"></i><b>10.1.3</b> 标准输入与输出</a></li>
<li class="chapter" data-level="10.1.4" data-path="cml.html"><a href="cml.html#管道与进程管理"><i class="fa fa-check"></i><b>10.1.4</b> 管道与进程管理</a></li>
<li class="chapter" data-level="10.1.5" data-path="cml.html"><a href="cml.html#别名"><i class="fa fa-check"></i><b>10.1.5</b> 别名</a></li>
<li class="chapter" data-level="10.1.6" data-path="cml.html"><a href="cml.html#脚本"><i class="fa fa-check"></i><b>10.1.6</b> 脚本</a></li>
<li class="chapter" data-level="10.1.7" data-path="cml.html"><a href="cml.html#传参"><i class="fa fa-check"></i><b>10.1.7</b> 传参</a></li>
</ul></li>
<li class="chapter" data-level="10.2" data-path="cml.html"><a href="cml.html#变量与数据结构"><i class="fa fa-check"></i><b>10.2</b> 变量与数据结构</a>
<ul>
<li class="chapter" data-level="10.2.1" data-path="cml.html"><a href="cml.html#路径变量"><i class="fa fa-check"></i><b>10.2.1</b> 路径变量</a></li>
<li class="chapter" data-level="10.2.2" data-path="cml.html"><a href="cml.html#数组"><i class="fa fa-check"></i><b>10.2.2</b> 数组</a></li>
<li class="chapter" data-level="10.2.3" data-path="cml.html"><a href="cml.html#字典-1"><i class="fa fa-check"></i><b>10.2.3</b> 字典</a></li>
</ul></li>
<li class="chapter" data-level="10.3" data-path="cml.html"><a href="cml.html#运算-1"><i class="fa fa-check"></i><b>10.3</b> 运算</a></li>
<li class="chapter" data-level="10.4" data-path="cml.html"><a href="cml.html#控制流程"><i class="fa fa-check"></i><b>10.4</b> 控制流程</a>
<ul>
<li class="chapter" data-level="10.4.1" data-path="cml.html"><a href="cml.html#选择结构"><i class="fa fa-check"></i><b>10.4.1</b> 选择结构</a></li>
<li class="chapter" data-level="10.4.2" data-path="cml.html"><a href="cml.html#循环-2"><i class="fa fa-check"></i><b>10.4.2</b> 循环</a></li>
</ul></li>
<li class="chapter" data-level="10.5" data-path="cml.html"><a href="cml.html#函数"><i class="fa fa-check"></i><b>10.5</b> 函数</a></li>
<li class="chapter" data-level="10.6" data-path="cml.html"><a href="cml.html#linux文件与目录管理"><i class="fa fa-check"></i><b>10.6</b> Linux文件与目录管理</a>
<ul>
<li class="chapter" data-level="10.6.1" data-path="cml.html"><a href="cml.html#linux-链接"><i class="fa fa-check"></i><b>10.6.1</b> Linux 链接</a></li>
</ul></li>
<li class="chapter" data-level="10.7" data-path="cml.html"><a href="cml.html#应用案例"><i class="fa fa-check"></i><b>10.7</b> 应用案例</a></li>
<li class="chapter" data-level="10.8" data-path="cml.html"><a href="cml.html#通配符与bash内建正则表达式"><i class="fa fa-check"></i><b>10.8</b> 通配符与bash内建正则表达式</a></li>
<li class="chapter" data-level="10.9" data-path="cml.html"><a href="cml.html#grep命令"><i class="fa fa-check"></i><b>10.9</b> grep命令</a></li>
<li class="chapter" data-level="10.10" data-path="cml.html"><a href="cml.html#sed命令"><i class="fa fa-check"></i><b>10.10</b> sed命令</a>
<ul>
<li class="chapter" data-level="10.10.1" data-path="cml.html"><a href="cml.html#应用情景"><i class="fa fa-check"></i><b>10.10.1</b> 应用情景</a></li>
<li class="chapter" data-level="10.10.2" data-path="cml.html"><a href="cml.html#sed命令基本结构"><i class="fa fa-check"></i><b>10.10.2</b> sed命令基本结构</a></li>
<li class="chapter" data-level="10.10.3" data-path="cml.html"><a href="cml.html#s命令substitute"><i class="fa fa-check"></i><b>10.10.3</b> s命令（substitute）</a></li>
<li class="chapter" data-level="10.10.4" data-path="cml.html"><a href="cml.html#d命令deletep命令print和n命令next"><i class="fa fa-check"></i><b>10.10.4</b> d命令（delete）、p命令（print）和n命令（next）</a></li>
<li class="chapter" data-level="10.10.5" data-path="cml.html"><a href="cml.html#地址规范"><i class="fa fa-check"></i><b>10.10.5</b> 地址规范</a></li>
<li class="chapter" data-level="10.10.6" data-path="cml.html"><a href="cml.html#q和q命令quit"><i class="fa fa-check"></i><b>10.10.6</b> q和Q命令（quit）</a></li>
<li class="chapter" data-level="10.10.7" data-path="cml.html"><a href="cml.html#y命令"><i class="fa fa-check"></i><b>10.10.7</b> y命令</a></li>
<li class="chapter" data-level="10.10.8" data-path="cml.html"><a href="cml.html#ia和c命令insert-append-change"><i class="fa fa-check"></i><b>10.10.8</b> i、a和c命令（insert, append, change）</a></li>
<li class="chapter" data-level="10.10.9" data-path="cml.html"><a href="cml.html#命令l命令和z命令zap"><i class="fa fa-check"></i><b>10.10.9</b> =命令、l命令和z命令（zap）</a></li>
</ul></li>
<li class="chapter" data-level="10.11" data-path="cml.html"><a href="cml.html#awk命令"><i class="fa fa-check"></i><b>10.11</b> awk命令</a>
<ul>
<li class="chapter" data-level="10.11.1" data-path="cml.html"><a href="cml.html#awk入门"><i class="fa fa-check"></i><b>10.11.1</b> awk入门</a></li>
<li class="chapter" data-level="10.11.2" data-path="cml.html"><a href="cml.html#awk工作原理"><i class="fa fa-check"></i><b>10.11.2</b> awk工作原理</a></li>
<li class="chapter" data-level="10.11.3" data-path="cml.html"><a href="cml.html#awk分隔符"><i class="fa fa-check"></i><b>10.11.3</b> awk分隔符</a></li>
<li class="chapter" data-level="10.11.4" data-path="cml.html"><a href="cml.html#awk变量"><i class="fa fa-check"></i><b>10.11.4</b> awk变量</a></li>
<li class="chapter" data-level="10.11.5" data-path="cml.html"><a href="cml.html#printf输出格式化"><i class="fa fa-check"></i><b>10.11.5</b> printf输出格式化</a></li>
<li class="chapter" data-level="10.11.6" data-path="cml.html"><a href="cml.html#awk模式"><i class="fa fa-check"></i><b>10.11.6</b> awk模式</a></li>
<li class="chapter" data-level="10.11.7" data-path="cml.html"><a href="cml.html#流程控制-2"><i class="fa fa-check"></i><b>10.11.7</b> 流程控制</a></li>
<li class="chapter" data-level="10.11.8" data-path="cml.html"><a href="cml.html#awk数组"><i class="fa fa-check"></i><b>10.11.8</b> awk数组</a></li>
<li class="chapter" data-level="10.11.9" data-path="cml.html"><a href="cml.html#awk内置函数"><i class="fa fa-check"></i><b>10.11.9</b> awk内置函数</a></li>
<li class="chapter" data-level="10.11.10" data-path="cml.html"><a href="cml.html#排序函数"><i class="fa fa-check"></i><b>10.11.10</b> 排序函数</a></li>
</ul></li>
<li class="chapter" data-level="10.12" data-path="cml.html"><a href="cml.html#数据驱动的编程"><i class="fa fa-check"></i><b>10.12</b> 数据驱动的编程</a></li>
<li class="chapter" data-level="10.13" data-path="cml.html"><a href="cml.html#linuxunix-shebang与argparse"><i class="fa fa-check"></i><b>10.13</b> Linux/Unix Shebang与argparse</a>
<ul>
<li class="chapter" data-level="10.13.1" data-path="cml.html"><a href="cml.html#linuxunix-shebang"><i class="fa fa-check"></i><b>10.13.1</b> Linux/Unix Shebang</a></li>
<li class="chapter" data-level="10.13.2" data-path="cml.html"><a href="cml.html#argparse模块包"><i class="fa fa-check"></i><b>10.13.2</b> argparse模块（包）</a></li>
</ul></li>
<li class="chapter" data-level="10.14" data-path="cml.html"><a href="cml.html#关于命令行与ide"><i class="fa fa-check"></i><b>10.14</b> 关于命令行与IDE</a></li>
</ul></li>
<li class="chapter" data-level="11" data-path="web.html"><a href="web.html"><i class="fa fa-check"></i><b>11</b> 网络数据采集</a>
<ul>
<li class="chapter" data-level="11.1" data-path="web.html"><a href="web.html#网络数据格式"><i class="fa fa-check"></i><b>11.1</b> 网络数据格式</a>
<ul>
<li class="chapter" data-level="11.1.1" data-path="web.html"><a href="web.html#csv"><i class="fa fa-check"></i><b>11.1.1</b> CSV</a></li>
<li class="chapter" data-level="11.1.2" data-path="web.html"><a href="web.html#xml-1"><i class="fa fa-check"></i><b>11.1.2</b> XML</a></li>
<li class="chapter" data-level="11.1.3" data-path="web.html"><a href="web.html#json-1"><i class="fa fa-check"></i><b>11.1.3</b> JSON</a></li>
</ul></li>
<li class="chapter" data-level="11.2" data-path="web.html"><a href="web.html#html"><i class="fa fa-check"></i><b>11.2</b> HTML</a>
<ul>
<li class="chapter" data-level="11.2.1" data-path="web.html"><a href="web.html#html的基本语法"><i class="fa fa-check"></i><b>11.2.1</b> HTML的基本语法</a></li>
<li class="chapter" data-level="11.2.2" data-path="web.html"><a href="web.html#常见html标签"><i class="fa fa-check"></i><b>11.2.2</b> 常见HTML标签</a></li>
<li class="chapter" data-level="11.2.3" data-path="web.html"><a href="web.html#dom树形数据结构"><i class="fa fa-check"></i><b>11.2.3</b> DOM树形数据结构</a></li>
</ul></li>
<li class="chapter" data-level="11.3" data-path="web.html"><a href="web.html#css"><i class="fa fa-check"></i><b>11.3</b> CSS</a>
<ul>
<li class="chapter" data-level="11.3.1" data-path="web.html"><a href="web.html#css的基本语法"><i class="fa fa-check"></i><b>11.3.1</b> CSS的基本语法</a></li>
<li class="chapter" data-level="11.3.2" data-path="web.html"><a href="web.html#id选择器"><i class="fa fa-check"></i><b>11.3.2</b> id选择器</a></li>
<li class="chapter" data-level="11.3.3" data-path="web.html"><a href="web.html#类选择器"><i class="fa fa-check"></i><b>11.3.3</b> 类选择器</a></li>
</ul></li>
<li class="chapter" data-level="11.4" data-path="web.html"><a href="web.html#javascript"><i class="fa fa-check"></i><b>11.4</b> JavaScript</a>
<ul>
<li class="chapter" data-level="11.4.1" data-path="web.html"><a href="web.html#javascript案例"><i class="fa fa-check"></i><b>11.4.1</b> JavaScript案例</a></li>
<li class="chapter" data-level="11.4.2" data-path="web.html"><a href="web.html#javascript的基本语法"><i class="fa fa-check"></i><b>11.4.2</b> JavaScript的基本语法</a></li>
<li class="chapter" data-level="11.4.3" data-path="web.html"><a href="web.html#ajax"><i class="fa fa-check"></i><b>11.4.3</b> AJAX</a></li>
</ul></li>
<li class="chapter" data-level="11.5" data-path="web.html"><a href="web.html#开发者工具"><i class="fa fa-check"></i><b>11.5</b> 开发者工具</a>
<ul>
<li class="chapter" data-level="11.5.1" data-path="web.html"><a href="web.html#打开开发者工具"><i class="fa fa-check"></i><b>11.5.1</b> 打开开发者工具</a></li>
<li class="chapter" data-level="11.5.2" data-path="web.html"><a href="web.html#查看器与样式"><i class="fa fa-check"></i><b>11.5.2</b> 查看器与样式</a></li>
<li class="chapter" data-level="11.5.3" data-path="web.html"><a href="web.html#其他功能"><i class="fa fa-check"></i><b>11.5.3</b> 其他功能</a></li>
</ul></li>
<li class="chapter" data-level="11.6" data-path="web.html"><a href="web.html#xpath"><i class="fa fa-check"></i><b>11.6</b> Xpath</a>
<ul>
<li class="chapter" data-level="11.6.1" data-path="web.html"><a href="web.html#基本查询"><i class="fa fa-check"></i><b>11.6.1</b> 基本查询</a></li>
</ul></li>
<li class="chapter" data-level="11.7" data-path="web.html"><a href="web.html#http"><i class="fa fa-check"></i><b>11.7</b> HTTP</a>
<ul>
<li class="chapter" data-level="11.7.1" data-path="web.html"><a href="web.html#http常见方法"><i class="fa fa-check"></i><b>11.7.1</b> HTTP常见方法</a></li>
</ul></li>
<li class="chapter" data-level="11.8" data-path="web.html"><a href="web.html#静态爬虫"><i class="fa fa-check"></i><b>11.8</b> 静态爬虫</a></li>
<li class="chapter" data-level="11.9" data-path="web.html"><a href="web.html#使用rselenium的动态爬虫"><i class="fa fa-check"></i><b>11.9</b> 使用RSelenium的动态爬虫</a>
<ul>
<li class="chapter" data-level="11.9.1" data-path="web.html"><a href="web.html#rselenium简介与安装"><i class="fa fa-check"></i><b>11.9.1</b> RSelenium简介与安装</a></li>
<li class="chapter" data-level="11.9.2" data-path="web.html"><a href="web.html#安装docker"><i class="fa fa-check"></i><b>11.9.2</b> 安装Docker</a></li>
<li class="chapter" data-level="11.9.3" data-path="web.html"><a href="web.html#rselenum语法"><i class="fa fa-check"></i><b>11.9.3</b> RSelenum语法</a></li>
<li class="chapter" data-level="11.9.4" data-path="web.html"><a href="web.html#案例1在链家搜索并获取相关信息"><i class="fa fa-check"></i><b>11.9.4</b> 案例1:在链家搜索并获取相关信息</a></li>
<li class="chapter" data-level="11.9.5" data-path="web.html"><a href="web.html#案例2登录豆瓣"><i class="fa fa-check"></i><b>11.9.5</b> 案例2:登录豆瓣</a></li>
</ul></li>
</ul></li>
<li class="chapter" data-level="12" data-path="geo.html"><a href="geo.html"><i class="fa fa-check"></i><b>12</b> 地理计算</a>
<ul>
<li class="chapter" data-level="12.1" data-path="geo.html"><a href="geo.html#r中地理计算"><i class="fa fa-check"></i><b>12.1</b> R中地理计算</a></li>
<li class="chapter" data-level="12.2" data-path="geo.html"><a href="geo.html#地理数据结构"><i class="fa fa-check"></i><b>12.2</b> 地理数据结构</a>
<ul>
<li class="chapter" data-level="12.2.1" data-path="geo.html"><a href="geo.html#向量vector"><i class="fa fa-check"></i><b>12.2.1</b> 向量（Vector）</a></li>
<li class="chapter" data-level="12.2.2" data-path="geo.html"><a href="geo.html#栅格raster"><i class="fa fa-check"></i><b>12.2.2</b> 栅格（Raster）</a></li>
<li class="chapter" data-level="12.2.3" data-path="geo.html"><a href="geo.html#坐标系coordinate-reference-system"><i class="fa fa-check"></i><b>12.2.3</b> 坐标系（coordinate reference system）</a></li>
</ul></li>
<li class="chapter" data-level="12.3" data-path="geo.html"><a href="geo.html#地理数据操纵"><i class="fa fa-check"></i><b>12.3</b> 地理数据操纵</a></li>
<li class="chapter" data-level="12.4" data-path="geo.html"><a href="geo.html#地理数据可视化"><i class="fa fa-check"></i><b>12.4</b> 地理数据可视化</a></li>
<li class="chapter" data-level="12.5" data-path="geo.html"><a href="geo.html#地理数据运算"><i class="fa fa-check"></i><b>12.5</b> 地理数据运算</a>
<ul>
<li class="chapter" data-level="12.5.1" data-path="geo.html"><a href="geo.html#取子集"><i class="fa fa-check"></i><b>12.5.1</b> 取子集</a></li>
</ul></li>
<li class="chapter" data-level="12.6" data-path="geo.html"><a href="geo.html#地理数据读写"><i class="fa fa-check"></i><b>12.6</b> 地理数据读写</a></li>
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<li class="chapter" data-level="A" data-path="sound.html"><a href="sound.html"><i class="fa fa-check"></i><b>A</b> 余音绕梁</a></li>
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<li class="chapter" data-level="B.1" data-path="date.html"><a href="date.html#日期-时间数据类型"><i class="fa fa-check"></i><b>B.1</b> 日期-时间数据类型</a></li>
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<h1 class="title">数据工程讲义：经济学分册</h1>
<p class="author"><em>史冬波 续本达</em></p>
<p class="date"><em>2024-02-03</em></p>
</div>
<div id="前言" class="section level1 unnumbered hasAnchor">
<h1>前言<a href="index.html#前言" class="anchor-section" aria-label="Anchor link to header"></a></h1>
<p>终于，我要开始写这本书了。</p>
<p>我写了一本书。这本书是这样的，第 <a href="intro.html#intro">1</a> 章介绍了啥啥，第 <a href="#wind"><strong>??</strong></a> 章说了啥啥，然后是啥啥……</p>
<p>我用了两个 R 包编译这本书，分别是 <strong>knitr</strong> <span class="citation">(<a href="#ref-xie2015">Xie 2015</a>)</span> 和 <strong>bookdown</strong> <span class="citation">(<a href="#ref-R-bookdown">Xie 2022</a>)</span>。以下是我的 R 进程信息：</p>
<p>金山找：今日北方拳输给南方拳了！
叶问：你错了，不是南北拳的问题，是你的问题！</p>
<div class="sourceCode" id="cb1"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb1-1"><a href="index.html#cb1-1" tabindex="-1"></a><span class="fu">sessionInfo</span>()</span></code></pre></div>
<pre><code>## R version 4.2.0 (2022-04-22)
## Platform: x86_64-apple-darwin17.0 (64-bit)
## Running under: macOS Big Sur/Monterey 10.16
##
## Matrix products: default
## BLAS: /Library/Frameworks/R.framework/Versions/4.2/Resources/lib/libRblas.0.dylib
## LAPACK: /Library/Frameworks/R.framework/Versions/4.2/Resources/lib/libRlapack.dylib
##
## locale:
## [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
##
## attached base packages:
## [1] stats graphics grDevices utils datasets
## [6] methods base
##
## other attached packages:
## [1] ggplot2_3.4.3
##
## loaded via a namespace (and not attached):
## [1] bslib_0.5.1 compiler_4.2.0
## [3] pillar_1.9.0 jquerylib_0.1.4
## [5] tools_4.2.0 digest_0.6.33
## [7] jsonlite_1.8.7 evaluate_0.21
## [9] lifecycle_1.0.3 tibble_3.2.1
## [11] gtable_0.3.4 pkgconfig_2.0.3
## [13] rlang_1.1.1 cli_3.6.1
## [15] rstudioapi_0.15.0 yaml_2.3.7
## [17] xfun_0.40 fastmap_1.1.1
## [19] withr_2.5.0 dplyr_1.1.3
## [21] knitr_1.43 generics_0.1.3
## [23] vctrs_0.6.3 sass_0.4.7
## [25] grid_4.2.0 tidyselect_1.2.0
## [27] glue_1.6.2 R6_2.5.1
## [29] fansi_1.0.4 rmarkdown_2.24
## [31] bookdown_0.30 magrittr_2.0.3
## [33] scales_1.2.1 htmltools_0.5.6
## [35] colorspace_2.1-0 utf8_1.2.3
## [37] munsell_0.5.0 cachem_1.0.8</code></pre>
<div id="致谢" class="section level2 unnumbered hasAnchor">
<h2>致谢<a href="index.html#致谢" class="anchor-section" aria-label="Anchor link to header"></a></h2>
<p>非常感谢谁谁以及谁谁对我的帮助。艾玛，要不是他们神一样的队友，我两年前就写完这本书了。</p>
<p>哈哈哈哈！</p>
<p class="flushright">
史冬波<br />
于某角落
</p>
</div>
</div>
<h3>References</h3>
<div id="refs" class="references csl-bib-body hanging-indent">
<div id="ref-xie2015" class="csl-entry">
Xie, Yihui. 2015. <em>Dynamic Documents with <span>R</span> and Knitr</em>. 2nd ed. Boca Raton, Florida: Chapman; Hall/CRC. <a href="http://yihui.name/knitr/">http://yihui.name/knitr/</a>.
</div>
<div id="ref-R-bookdown" class="csl-entry">
———. 2022. <em>Bookdown: Authoring Books and Technical Documents with r Markdown</em>. <a href="https://CRAN.R-project.org/package=bookdown">https://CRAN.R-project.org/package=bookdown</a>.
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