I sometimes get questions on how to reproduce the samples that are posted in this blog. Currently, I’m referring to these posts: Plotting lm and glm models with ggplot Easily plotting grouped bars with ggplot Simplify frequency plots with ggplot … Weiterlesen → [Read more...]

(Note: this was initially posted on my other blog at Glacial Till, but there were some good bits of information that I wanted to share with the Paleoposse.) Last week I attended my first science conference: The Lunar and Planetary Science Conference in Houston, TX. If you followed me on ... [Read more...]

A Beginner's Guide to Irrational Behavior started yesterday.  One might not immediately think that such a course would be relevant for statistical modeling.  Well, it is if your statistical modeling uses people as informants.  If the dat... [Read more...]

You want your analytics to just work… with extremely large data sets as nimbly as small ones. You don’t want to have to think about parallelism, data formatting, and memory management. Paradigm4 presents a webinar about SciDB-R, an R package that lets you remain an R programmer, but expands ... [Read more...]

SciDB-R, a package for R that lets R programmers perform massive-scale data-management and analytical tasks from inside R programs, is now available. You can download the package from GitHub here. It is also available on The Comprehensive R Archive Net... [Read more...]

by Thomas Dinsmore This is the third in a series of posts highlighting new features in Revolution R Enterprise Release 6.2, which is scheduled for General Availability April 22. This week's post features our new Stepwise Regression capability. The Stepwise process starts with a specified model and then sequentially adds into or ... [Read more...]

Programmers have long been very proud and loyal with their tools, and often very vocal. This has led to well-contested rivalries and “fights” about which tool is better: emacs or vi; Java or C++; Perl or Python; Django or Rails; … Continue reading →The post Python vs R vs SPSS … Can’... [Read more...]

Last week we released version 0.1.5-6 of the ChainLadder package on CRAN. The ChainLadder package provides statistical models, which are typically used for the estimation of outstanding claims reserves in general insurance. The package vignette gives an overview of the package functionality. Output of plot(MackChainLadder(GenIns)) Since the last ... [Read more...]

When I went to school we were always taught the “i before e, except after c” rule for spelling. But how accurate is this rule? Kevin Marks tweeted today the following: »@uberfacts: There are 923 words in the English language that break the “I before E” rule. Only 44 words actually follow ... [Read more...]

Programmers have long been very proud and loyal with their tools, and often very vocal. This has led to well-contested rivalries and "fights" about which tool is better: emacs or vi; Java or C++; Perl or Python; Django or Rails; and, for data geeks, the SAS/SPSS/R/Matlab fight. ... [Read more...]

Guess what?! Charlie decided to institute another round of the epic Flyer Contest! Here’s how it works in 5 easy steps… Print out one of the two flyers below (or this link: here) Post it somewhere public. Examples include: a message board in your department, at your local comic shop, ... [Read more...]

There are all sorts of problems with p-values and confidence intervals and I have no intention (or the time) to cover all those problems right now.  However, a big problem is that most people have no idea what p-values really mean. Here is one example of a common problem with ... [Read more...]

This post is intended at those who are beginners at R, and is inspired by a small post in Martin's bioblog.First, we plot a "correlation heatmap" using the same logic that Martin uses. In our example, let's use the Movies dataset that comes with ggplot... [Read more...]

Thanks to the attention my paper on the cost of Somali piracy has received, a lot of people have approached me to ask how I computed the maritime routes. It is not a very difficult task using R. The key ingredient is a map of the world, that can be ... [Read more...]

A few weeks ago, the stream package has been released on CRAN. It allows to do real time analytics on data streams. This can be very usefull if you are working with large datasets which are already hard to put in RAM completely, let alone to build some statistical model ... [Read more...]

Last week is had a look at the standard R routines for estimating models for ordinal data. This week, I want to have a look at JAGS for examining the same data. To be honest, most of it is taking an example (inhaler) and removing code. To my surpr... [Read more...]

Jeff and I talk about Jeff's recently completed MOOC on Data Analysis. [Read more...]

The most recent edition of the Revolution Newsletter is out. The news section is below, and you can read the full March edition (with highlights from this blog and community events) online. You can subscribe to the Revolution Newsletter to get it monthly via email. Get Results Fast with our ... [Read more...]

Last week, Alaska took it home with her dangerous performance, while Ivy Winters was sent home after going up against Alyssa Edwards. This is sad on many fronts. First, I love me some Ivy Winters. Second, Jinkx had revealed that she had a crush on Ivy, and the relationship that ... [Read more...]

I posted yesterday about R Help tooltips. I have started to use them e.g. on the graph gallery However, I’m quickly frustrated with having to write the full url, i.e if I want to add a link to the help … Continue reading → [Read more...]