When I try to install caret package in RI get the following error message:
utils:::menuInstallPkgs() --- Please select a CRAN mirror for use in this session --- Warning: failed to download mirrors file (cannot open URL 'https://cran.r-project.org/CRAN_mirrors.csv'); using local file 'C:/PROGRA~1/R/R-34~1.0/doc/CRAN_mirrors.csv' Warning: unable to access index for repository https://rweb.crmda.ku.edu/cran/src/contrib: cannot open URL 'https://rweb.crmda.ku.edu/cran/src/contrib/PACKAGES' Warning: unable to access index for repository http://www.stats.ox.ac.uk/pub/RWin/src/contrib: cannot open URL 'http://www.stats.ox.ac.uk/pub/RWin/src/contrib/PACKAGES' Error in install.packages(NULL, .libPaths()[1L], dependencies = NA, type = type) : no packages were specified In addition: Warning message: In download.file(url, destfile = f, quiet = TRUE) : InternetOpenUrl failed:
How can I solve it?
Try any of the following methods:
Edit: changed https to http
install.packages("http://cran.r-project.org/src/contrib/caret_6.0-80.tar.gz",
repos=NULL, method="libcurl")
or
library(devtools)
install_url("http://cran.r-project.org/src/contrib/caret_6.0-80.tar.gz")
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