This is a follow up to my previous post. There is a quicker way to compute the function I created (basic cumulative sum) in R.Instead of:function f(x) { sum = 0; for (i in seq(1,x)) sum = sum + i return(su...

This is a follow up to my previous post. There is a quicker way to compute the function I created (basic cumulative sum) in R.Instead of:function f(x) { sum = 0; for (i in seq(1,x)) sum = sum + i return(su...

R is an incredibly powerful programming tool used by a large community of people who require an easy to use, light weight, FREE, and fundamentally awesome statistics package! I have recently discovered that R can be used by geologists whose IT skills are often pitied by their more computer literate geophysicist colleagues. Long story short

The most recent edition of the Revolution Newsletter is out. The news section is below, and you can read the full June edition (with highlights from this blog and community events) online. You can subscribe to the Revolution Newsletter to get it monthly via email. Revolution R Enterprise 6 Now Available! The latest release of Revolution R Enterprise brings...

Is it just me, or does the performance of the foreach package with a doSNOW backend operating on a socket grid suck?Here at work, I am helping to setup a cluster of Windows machines for distributed R processing. We have lots of researchers runnin...

In case you missed them, here are some articles from May of particular interest to R users. R tops the annual KDNuggets Data Mining Software poll for the first time. R 2.15.1 is scheduled for June 22. (Revolution R Enterprise 6, released on June 5, is based on 2.14.2.) A tutorial uses R, Hadoop, and the RHadoop project to...

Why study networks? Development and aid projects these days are more and more often focussing on supporting networks, so tools to analyse networks are always welcome. In this post I am going to present a very easy-to-use package for the stats program R which makes nice-looking graphs of these kinds of networks. In a recent