stat 579

Factors & Intro to Plyr'ing

Slides

Factors, Data Aggregations

Data & Code

R script of the commands in class (planned): 05-brfss.R
R script of the commands in class (actual, Sep 21): 09-inclass-sep21.R
R script of the commands in class (actual, Sep 23): 09-inclass-sep21.R
Cleaned up version of the Data set: brfss-2009-clean.csv & codebook

Additional Resources

BRFSS homepage: additional information, additional data
Factors in R by Phil Spector (Berkeley)
The plyr package.
R homepage
Local copy of CRAN, the comprehensive R network, where you can actually download R
R reference card, which lists a lot of the functions we'll be using in the coming weeks.
ggplot2: overview, mailing list, book draft