(This article was first published on

**RDataMining**, and kindly contributed to R-bloggers)by Yanchang Zhao, RDataMining.com

There are more than 100 R tips at http://pj.freefaculty.org/R/Rtips.html, which provide quick examples to small challenges in everyday R programming, especially for users switching from other languages to R. There is also a .PDF version for it at http://pj.freefaculty.org/R/Rtips.pdf.

It presents short examples on:

- Data Input/Output

- Working with data frames: Recoding, selecting, aggregating

- Matrices and vector operations

- Applying functions, tapply, etc

- Graphing

- Common Statistical Chores

- Model Fitting (Regression-type things)

- Packages

- Misc. web resources

- R workspace

- Interface with the operating system

- Stupid R tricks: basics you can’t live without

- Misc R usages I find interesting.

To

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