packages.r

# install packages from CRAN
p_needed <- c("readr", # imports spreadsheet data
              "haven", # imports SPSS, Stata and SAS files
              "magrittr", #  for piping
              "plyr", # for consistent split-apply-combines
              "dplyr",  # provides data manipulating functions
              "stringr", # for string processing
              "ggplot2", # for graphics
              "tidyr", # for tidying data frames
              "broom", # for tidying model output
              "janitor", # for basic data tidying and examinations
              "reshape2", # reshape data 
              "xtable", # generate table output
              "stargazer", # generate nice model table
              "babynames", # dataset compiled by Hadley Wickham; contains US baby names provided by the SSA and data on all names used for at least 5 children of either sex
              "nycflights13" # data set on all 336776 flights departing from NYC in 2013
)
packages <- rownames(installed.packages())
p_to_install <- p_needed[!(p_needed %in% packages)]
if (length(p_to_install) > 0) {
  install.packages(p_to_install)
}
lapply(p_needed, require, character.only = TRUE)