History of this document

• Jonas Stein CC-BY-SA 2012-01-11
• Tom Short granted to the public domain 2004-11-07 and got permission to include material from
• Emmanuel Paradis (R for Beginners)

License CC BY-SA

• http://creativecommons.org/licenses/by-sa/3.0/
• http://creativecommons.org/licenses/by-sa/3.0/legalcode

Links

• pitfalls in R explained http://www.burns-stat.com/pages/Tutor/R_inferno.pdf