无法在最新版本的 RStudio 和 R Version.3.1.1 中安装软件包 [英] Unable to install packages in latest version of RStudio and R Version.3.1.1

问题描述

我无法通过最新版本的 RStudio 和 R Version.3.1.1. 安装软件包.请帮忙.我收到如下错误:

I am unable to install packages through latest version of RStudio and R Version.3.1.1. Kindly help. I got the error as mentioned below:

Example:
Warning in install.packages :
  InternetOpenUrl failed: ''
Warning in install.packages :
  InternetOpenUrl failed: ''
Warning in install.packages :
  unable to access index for repository http://cran.rstudio.com/bin/windows/contrib/3.1
Installing package into ‘C:/Users/Documents/R/win-library/3.1’
(as ‘lib’ is unspecified)
Warning in install.packages :
  InternetOpenUrl failed: ''
Warning in install.packages :
  InternetOpenUrl failed: ''
Warning in install.packages :
  unable to access index for repository http://cran.rstudio.com/bin/windows/contrib/3.1
Warning in install.packages :
  package ‘reshape’ is not available (for R version 3.1.1)

推荐答案

不能 100% 确定您有同样的问题，但我发现我的工作很难阻止提供的每个镜像站点选项，并且我得到了像这样的错误:

Not 100% certain that you have the same problem, but I found out the hard way that my job blocks each mirror site option that was offered and I was getting errors like this:

Installing package into ‘/usr/lib64/R/library’
(as ‘lib’ is unspecified)
--- Please select a CRAN mirror for use in this session ---
Error in download.file(url, destfile = f, quiet = TRUE) : 
  unsupported URL scheme
Warning: unable to access index for repository https://rweb.crmda.ku.edu/cran/src/contrib
Warning message:
package ‘ggplot2’ is not available (for R version 3.2.2)

解决方法(我使用 CentOS)...

Workaround (I am using CentOS)...

install.packages('package_name', dependencies=TRUE, repos='http://cran.rstudio.com/')

我希望这可以为某些人节省数小时的挫败感.

I hope this saves someone hours of frustration.

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