Pessoal, alguém pode me ajudar a resolver este problema?? Isto está acontecendo com vários outros pacotes. PS: Acabei de instalar o R na minha máquina.
install.packages(mapdata) Error in install.packages(mapdata) : object 'mapdata' not found install.packages("mapdata") --- Please select a CRAN mirror for use in this session --- Warning: unable to access index for repository https://cran-r.c3sl.ufpr.br/src/contrib: cannot open URL 'https://cran-r.c3sl.ufpr.br/src/contrib/PACKAGES' Warning: unable to access index for repository https://cran-r.c3sl.ufpr.br/bin/windows/contrib/3.4: cannot open URL ' https://cran-r.c3sl.ufpr.br/bin/windows/contrib/3.4/PACKAGES' Warning message: package ‘mapdata’ is not available (for R version 3.4.2) library(mapdata) Error: package ‘maps’ required by ‘mapdata’ could not be found
Desde já, obrigada!!