R Notebook

180901 install_pkg

if("ggplot2" %in% installed.packages("ggplot2") == FALSE)install.packages("ggplot2")
if("dplyr" %in% installed.packages("dplyr") == FALSE)install.packages("dplyr")
library(dplyr)
if("data.table" %in% installed.packages("data.table") == FALSE)install.packages("data.table")