An introduction to R for sofware developers and data analysts Saturday March 10th, 2012 8:30-5:00pm EBay 2161 North 1st Street San Jose, California I will be presenting a one day professional development workshop on R programming for software developers and … Continue reading →
R has some great functions for generating scatterplots in 3 dimensions. Two of the best are the scatter3d() function in John Fox’s car package, and the scatterplot3d() function in Uwe Ligges’ scatterplot3d package. In this post, we will focus on … Continue reading →
No, I don’t mean late night coding. R is constantly changing – both as a language and a platform. Updates containing new functionality are frequent. New and revised packages appear several times a week. Staying current with these myriad changes can … Continue reading →
CloudStat School is a not yet released open source project. The objective is to create an interactive R Learning Platform. The best way to learn R programming is doing while learning. In CloudStat School, you will see a console box at your top left han...
I may want to add a subtitle “Why R-Forge Must Die” (thinking of Barry Rowlingson’s talk earlier this year). I have been a GitHub user for two years, and I was mainly influenced by Hadley. Now I even feel a little bit addicted to GitHub (its slogan is “social coding”), because it is really...
Dear R Programmers,I have tried to capture R capabilites in a single slide. I welcome your comments/suggestions on the same.
A common task when analyzing multi-group designs is obtaining descriptive statistics for various cells and cell combinations. There are many functions that can help you accomplish this, including aggregate() and by() in the base installation, summaryBy() in the doBy package, and … Continue reading →
A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. R Language Code The Prime Function prime = function(n){ n = as.integer(n) if(n > 1e8) stop(“n too large”) primes = re...
After maintaining the Quick-R website (R tutorials and jumpstart) for the past 5 years, I’ve decided to add a blog so that I can go into more detail on topics related to practical data analysis. The statMethods blog will contain articles … Continue reading →
This is a copy of a post by me on the R-statistics blog. Fortran and C programmers often say that interpreted languages like R are nice and all, but lack in terms of speed. How fast something works in R… See more ›
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).