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R 语言经典实例(原书第 2 版)
book

R 语言经典实例(原书第 2 版)

by J.D. Long, Paul Teetor
June 2020
Beginner to intermediate
522 pages
9h 6m
Chinese
China Machine Press
Content preview from R 语言经典实例(原书第 2 版)
20
1
添加包(Packages
单击查看已安装的所有 R 包列表,包含 R 基础包和之后安装的添加包。单击某一添
加包名,可以查看该包的函数和数据集列表。
搜索引擎与关键字(Search Engine & Keywords
单击进入简易搜索引擎页面,根据不同的关键字和短语搜索相应的帮助文档。该页
面也给出了按照主题排序的常见关键词,单击它们会给出相关的帮助页面。
安装R 时,通过help.start 访问的R 基本发布版文档将加载到你的计算机上。
RStudio 中,你可以使用菜单选项:Help R Help,来访问帮助页面,它给出一个含有
指向 RStudio 网站链接的页面。因此,你需要访问互联网才能访问 RStudio 的帮助链接。
1.7.4 另请参阅
本地安装的帮助文件是安装 R 软件时 R 项目网站文档的复制品,网站上可能会有更新的
帮助文件。
1.8 获取函数的帮助文档
1.8.1 问题
了解已经安装在计算机上的某个函数的更多信息。
1.8.2 解决方案
通过 help 函数查看该函数的帮助文档。例如:
help(
functionname
)
args 函数快速获取函数的参数。例如:
args(
functionname
)
example 函数查看函数的使用示例。例如:
example(
functionname
)
1.8.3 讨论
本书将介绍许多 R 函数,但每个 R 函数都有很多功能,无法在本书中逐一介绍。如果读
者对某个函数感兴趣,我们强烈推荐阅读关于该函数的帮助页面,你或许会从中获取有 ...
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Publisher Resources

ISBN: 9787111656814