- Reshaping using melt, stack, unstack.
When a data set is too wide, make it taller.
When a data set is too tall, make it wider.
Hiccups.dat data file.

- R Script for Chapter
3 of D S U R book:
Data files for Discovering Statistics Using R: Chapter 3 The R environment.

- Files related to reshaping data for statistical
data
analysis.
- Three plots, discussion, and R code:
Plotting
Assignment on R Graphics - due
on September 30th.
- Andrew Barr's Basic introduction
to R ggplot2 package.
- What is a random seed to a random number generator? How to seed the
pseudorandom number generator to get reproducible results:
set.seed(1440) diamondSample1 <- diamonds[sample(1:nrow(diamonds), 50, replace=FALSE),] set.seed(1440) diamondSample2 <- diamonds[sample(1:nrow(diamonds), 50, replace=FALSE),] head(diamondSample1) head(diamondSample2)

- Chapter
4: Exploring Data with Graphs from
the DSUR book website.
DSUR Data files needed for Chapter 4 R graphs ggplot2 package script.