尝试在 R markdown 中编织 html 时出错

Question

下面是我得到的错误：

Quitting from lines 46-48 (lesson3_student.rmd) 
Error in contrib.url(repos, "source") : 
  trying to use CRAN without setting a mirror
Calls: <Anonymous> ... withVisible -> eval -> eval -> install.packages -> contrib.url
In addition: Warning message:
In in_dir(opts_knit$get("root.dir") %n% input_dir(), evaluate::evaluate(code,  :
  You changed the working directory to /Users/Madiyar/Desktop/Facebook Data (probably via setwd()). It will be restored to /Users/Madiyar/Downloads. See the Note section in ?knitr::knit
Execution halted

感谢您的帮助

Answer 1

这个错误对我来说似乎很清楚; 你"trying to use CRAN without setting a mirror" ; 问题是针织以非交互模式运行。尝试推杆

options(repos="https://cran.rstudio.com" )

在您的代码中。顺便说一下，在编织代码中，您可能不应该

• 运行install.packages()（正如@hrbrmstr在通讯中所说，"[m]ost 人们想要管理他们自己的包库"）
• 调用 setwd() 手动设置工作目录