This document provides instructions for installing and loading R packages like lattice and ggplot2, checking the working directory, reading in data files, and using basic R commands like qplot() and str() to explore data.

1. ships with R, but must load
library(lattice)
x qplot()
Rstudio
existing directory
getwd()
dir()
command+enter
sent to the console
script
install
install.packages('ggplot2', dependencies = T)
and load
library(ggplot2)
gDat <- read.delim(".tsv") # tab autocomplete
str(gDat)