I tried to install multicomp package after I upgrade my R to 3.5.1.
install.packages('multicomp',dependency=TRUE,repos='http://mirror.las.iastate.edu/CRAN/')
I got error message:
package ‘multicomp’ is not available (for R version 3.5.1)
I tried many different mirrors, but nothing works for me.
Does anyone know why? Thanks a lot in advance.