I want to install two packages - Icens and DCchoice.
But there are error messages as follows ;
1st error message
install.packages("Icens",repos=c("@CRAN@","http://www.bioconductor.org/packages/release/bioc"),dep=TRUE)
Installing package into ‘C:/Users/pjh74/Documents/R/win-library/4.0’
(as ‘lib’ is unspecified)
--- Please select a CRAN mirror for use in this session ---
Secure CRAN mirrors
In case of "selecting a CRAN mirror", I went to the menu "Tools -> Global options -> Packages -> Primary CRAN repository" and changed into a server.
Then DCchoice package was successfully installed.
With regard to Icens package, I found a code for installing the package at the bioconductor homepage and used it. Then the package was also successfully installed.