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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64
｜
第
3
章
•
将工作目录设置为项目目录。
•
保留 RStudio 中的窗口状态，这样当你返回项目时，你的窗口与你之前退出时的情
况保持一致，并且将打开上次保存项目时打开的所有文件。
•
保留 RStudio 项目设置。
为了保存项目设置，RStudio 在项目目录中创建一个扩展名为
.Rproj
的项目文件。如果
你在 RStudio 中打开项目文件，它就像是打开项目的捷径。此外，RStudio 创建一个名
为
.Rproj.user
的隐藏目录来存放与项目相关的临时文件。每当你在 R 中做一些非常重要
的事情时，我们建议你创建一个 RStudio 项目。项目可以帮助你保持井井有条，让你的
项目工作更加容易。
3.3 保存工作空间
3.3.1 问题
你希望保存尚在内存中的工作空间、所有变量和函数。
3.3.2 解决方案
调研 save.image 函数。
save.image()
3.3.3 讨论
工作空间中保存当前 R 的变量和函数，并且工作空间是在启动 R 时自动创建的。工作空
间保存在计算机的内存中，直到退出 R 软件。你可以在“环境”（Environment）选项卡
中轻松查看 RStudio 中工作空间的内容，如图 3-4 所示。
图 3-4：RStudio 的“环境”（Environment）窗格
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