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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61
第 3 章
R 软件导览
R 和 RStudio 是史无前例的大型软件。同应用其他大型软件一样，你需要花时间对它
进行配置、客户化、更新，以及把它融入你的计算机环境中。本章将帮助你完成这些
任务。本章内容不涉及算法、统计或者绘图，它仅仅介绍如何处理作为软件的 R 和
RStudio。
3.1 获取和设定工作目录
3.1.1 问题
你希望改变工作目录，或者希望了解当前工作目录。
3.1.2 解决方案
RStudio
导航到 RStudio 右侧的“文件”（Files）窗格中相应的目录。然后从“文件”（File）
窗格下方选择“更多”（More）→“设置为工作目录”（Set As Working Directory），
如图 3-1 所示。
控制台
使用 getwd 报告工作目录，并使用 setwd 进行修改：
getwd()
#> [1] "/Volumes/SecondDrive/jal/DocumentsPersonal/R-Cookbook"
setwd("~/Documents/MyDirectory")
3.1.3 讨论
工作目录很重要，因为它是所有文件输入和输出的默认位置
—
包括读取和写入数据文
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