Check if R package is installed then load library

Question

Our R scripts are used on multiple users on multiple computers and hence there are deviations in which packages are installed on each computer. To ensure that each script wo

Answer 1

The CRAN pacman package that I maintain can address this nicely. Using the following header (to ensure pacman is installed first) and then the p_load function will try to load the package and then get them from CRAN if R can't load the package.

if (!require("pacman")) install.packages("pacman"); library(pacman)
p_load(qdap, ggplot2, fakePackage, dplyr, tidyr)