June 2020
Beginner to intermediate
522 pages
9h 6m
Chinese
Content preview from R 语言经典实例（原书第 2 版）
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9
第 1 章
R 入门和获得帮助
本章是其他章的基础，它介绍如何下载、安装和运行 R 软件。
本章重点说明通过何种途径寻找解决问题的办法。R 社区提供了丰富的说明和帮助文档，
因此你能从中得到他人的帮助。下面是一些常用的帮助来源：
本地已安装的文档
当在计算机上安装 R 软件时，它将自动安装大量的文档。可以对本地文档进行浏览
（1.7 节）和搜索（ 1.9 节）。我们经常在网上搜索答案，但常常惊奇地发现很多问
题都能从本地已有的文档得到解答。
添加包分类视图
添加包分类视图（task view）（
http://cran.r-project.org/web/views
）是对适用于某个统
计工作领域的特定软件包的描述，例如计量经济学、医疗图像、心理学，或者空间
统计。每个添加包分类视图都由该领域的专家来撰写和维护。CRAN 网站上共有 35
个这样的分类视图，所以你总能找到一个或者多个感兴趣的领域。我建议每个初学
者试着阅读至少一个添加包分类视图，从而大致对 R 软件的功能有一个初步的了解
（ 1.12 节 ）。
添加包文档
大多数 R 添加包都附带说明文档。许多 R 包甚至还包含对其内容的概括和教程，这
在 R 社区称为
vignette
。这些文档都大大提高 R 添加包的使用效率。这些公布在包
存储库中，如 CRAN 网站（
http://cran.r-project.org/
）上。在安装 R 包的同时，其
相关文档也会自动地安装到电脑上。
Q&A 网站
可以通过问题与解答（Question and Answer，Q&A）
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.