Install if not present

install_if_not_present.R

# R code that checks if a package is installed, and installs it from CRAN if not.

#' Install packages from a list if not present
#'
#' Installs packages from a provided list if they are not already installed.
#'
#' @param packages_list a list of packages to be installed
#' 
#' @export
cran_install_if_not_present <- function(packages_list) {
  tbi <- packages_list[!(packages_list %in% installed.packages()[,"Package"])]
  
  if(length(tbi)) {
    install.packages(tbi)
  }
}