(This article was first published on Quantitative Ecology, and kindly contributed to R-bloggers)
Here's a link to a blog that lists some reasons to use Rhttp://blog.fosstrading.com/2010/12/why-use-r.html
To leave a comment for the author, please follow the link and comment on his blog: Quantitative Ecology.
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Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).