我无法在R studio上安装任何软件包。特别是我正在为“ ggplot2”执行此操作。我还想提到我在Windows中工作。
每当我运行代码
install.packages("ggplot2")
我在控制台中收到错误
> install.packages("ggplot2")
Warning in install.packages :
unable to access index for repository https://CRAN.R-project.org/src/contrib:
cannot open URL 'https://CRAN.R-project.org/src/contrib/PACKAGES'
Installing package into ‘C:/Users/Yash/Documents/R/win-library/3.5’
(as ‘lib’ is unspecified)
Warning in install.packages :
unable to access index for repository https://CRAN.R-project.org/src/contrib:
cannot open URL 'https://CRAN.R-project.org/src/contrib/PACKAGES'
Warning in install.packages :
package ‘ggplot2’ is not available (for R version 3.5.0)
Warning in install.packages :
unable to access index for repository https://CRAN.R-
project.org/bin/windows/contrib/3.5:
cannot open URL 'https://CRAN.R-project.org/bin/windows/contrib/3.5/PACKAGES'
我还尝试了两个代码
options(repos="https://CRAN.R-project.org")
install.packages("ggplot2", repos="https://cran.rstudio.com/")
他们也没有工作。它们也显示相同的错误。我认为我面临目录问题，但不确定。任何帮助将不胜感激。