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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R
软件导览
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75
图 3-7：GitHub 项目页面示例
3.12 设定或改变默认 CRAN 网站镜像
3.12.1 问题
你希望下载某些 R 包。希望设定或改变默认的 CRAN 网站镜像，这样 R 每次下载时不
需要你选择镜像。
3.12.2 解决方案
在 RStudio 中，你可以从 RStudio 的“偏好”（Preferences）菜单更改默认的 CRAN 镜像，
如图 3-8 所示。
图 3-8：RStudio 添加包“偏好”（Preferences）项
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