What languages and tools should you learn as a math/stat consultant? To jump to the answer: Excel/VBA, SQL, R, Java, and Python. Spreadsheets have many problems with verifiability and scalability, so why Excel? Excel is: Useful for prototyping ideas quickly, either for your own use or to show to other team members Well-known and understood 
See a the poll here by Gabriel Rossman at Code and Culture. I voted for R and ‘igraph’. If you use R you are getting access to all the other wonderful things that come with R. Using specialized package, like Pajek, UCINET etc requires constant going back and forth between network software and some other 
As a web application and database developer who has spent most of my time in the world Java, Ruby, Python and SQL, the R language has some unfamiliar functionality.This blog will be comprised of tips and tricks for making charts with the R language.
If you want to learn about R through videos, there are now a large number of options.This post provides links to many of these video under the headings of:(a) What is R?(b) Introductory R, and(c) Intermediate and Advanced R.What is R?If you are evaluat...
If you want to learn about R through videos, there are now a large number of options. This post provides links to many of these video under the headings of: (a) What is R? (b) Introductory R, and (c) Intermediate and Advanced R. What is R?If you are...
A few hours ago, I sent the following to both the R development list and the informal R / GSoC list: Date: Mon, 26 Apr 2010 15:27:29 -0500 To: R Development List CC: gsoc-r Subject: R and the Google Summer of Code 2010 -- Please welcome our new st...
A few hours ago, I sent the following to both the R development list and the informal R / GSoC list: Date: Mon, 26 Apr 2010 15:27:29 -0500 To: R Development List CC: gsoc-r Subject: R and the Google Summer of Code 2010 -- Please welcome our new st...
A few hours ago, I sent the following to both the R development list and the informal R / GSoC list: Date: Mon, 26 Apr 2010 15:27:29 -0500 To: R Development List CC: gsoc-r Subject: R and the Google Summer of Code 2010 -- Please welcome our new stud...
I was delighted to see the following e-mail post from Dirk Eddelbuettel regarding the google-summer-of-code R google group: * * * Earlier today Google finalised student / mentor pairings and allocations for the Google Summer of Code 2010 (GSoC 2010). The R Project is happy to announce that the following students have been accepted: Colin Rundel, “rgeos – an...
The R language has two closely related NULL-like values, NA and NULL ... Both are used to represent missing or undefined values. This has lead to much confusion.
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
