R版本3.2.2_Windows 7 Professional:无法安装漩涡

R版本3.2.2_Windows 7 Professional:无法安装漩涡,r,swirl,R,Swirl,尝试在R版本3.2.2的Windows操作系统(Windows 7 professional)上安装漩涡时获得的错误消息: Installing package into ‘C:/Users/Amrita/Documents/R/win-library/3.2’ (as ‘lib’ is unspecified) --- Please select a CRAN mirror for use in this session --- Error in download.file(url, dest

尝试在R版本3.2.2的Windows操作系统(Windows 7 professional)上安装漩涡时获得的错误消息:

Installing package into ‘C:/Users/Amrita/Documents/R/win-library/3.2’
(as ‘lib’ is unspecified)
--- Please select a CRAN mirror for use in this session ---
Error in download.file(url, destfile = f, quiet = TRUE) : 
  cannot open URL 'https://cran.r-project.org/CRAN_mirrors.csv'
In addition: Warning message:
In download.file(url, destfile = f, quiet = TRUE) :
  InternetOpenUrl failed: ''
Warning: unable to access index for repository cran.rstudio.com/src/contrib
Warning: unable to access index for repository www.stats.ox.ac.uk/pub/RWin/src/contrib
Warning: unable to access index for repository cran.rstudio.com/bin/windows/contrib/3.2
Warning: unable to access index for repository www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/3.2
Warning message:
package ‘swirl’ is not available (for R version 3.2.2) 

你能安装其他软件包吗?您有不允许R连接到internet的Windows防火墙吗?没有,我无法安装其他软件包,也没有Windows防火墙不阻止R。当我尝试安装另一个软件包(如Boot)时,会弹出相同的错误消息听起来您的R会话无法连接到internet。Windows防火墙似乎是一个可能的罪魁祸首,但你说不是这样。我真的没有其他想法。这不是一个连接问题。我也在RStudio中尝试了此安装,并收到了相同的错误和警告消息。我尝试了以下操作:1。根据对stackoverflow的另一个类似问题的回答,我在RStudio中的Tools\u>Global Options\u>Packages中取消了“Use Internet Explorer library/proxy for HTTP”选项。但是,我无法解决此问题。2.我无法将CRAN镜像从Global更改为“0-Cloud-RStudio”,“自动重定向到全球服务器”,这是解决此问题的建议操作,但仍然没有成功。这一切听起来都像是非常相关的信息,应该编辑到您的问题中,而不是隐藏在评论中。编辑您的问题会影响其活动,可能会引起更多关注。