This is the only advanced programming book on R, the enormously
successful open-source system based on the S language. It is written by
John Chambers, the author of the S language from which R evolved. R's
international support and the thousands of packages and other
contributions have made it the standard for statistical computing in
research and teaching. This book guides the reader through programming
with R, beginning with simple interactive use and progressing by gradual
stages, starting with simple functions. More advanced programming
techniques can be added as needed, allowing users to grow into software
contributors, benefiting their careers and the community. R packages
provide a powerful mechanism for contributions to be organized and
communicated.