Introduction I was looking at a list of the top grossing films of all time (available from boxofficemojo.com) and was wondering what kind of graphs I would come up with if I had that kind of data. I still don’t know what kind of graphs I’d construct ... [Read more...]

One of the great things about (software) code is that people build on it and out from it… Which means that as well as producing ever more complex bits of software, tools also get produced over time that make it easier to do things that were once hard to do, ... [Read more...]

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[Update alert: INLA author Håvard Rue found a problem with the code below. See here] Ramsay and Silverman’s Functional Data Analysis is a tremendously useful book that deserves to be more widely known. It’s full of ideas of neat things one can do when part of a ... [Read more...]

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A new version of RInside, now at 0.2.6, is now available via CRAN. RInside provides a set of convenience classes which facilitate embedding of R inside of C++ applications and programs, using the classes and functions provided by the Rcpp R and C++... [Read more...]

Tomorrow, we will discuss Fisher-Tippett theorem. The idea is that there are only three possible limiting distributions for normalized versions of the maxima of i.i.d. samples . For bounded distribution, consider e.g. the uniform distribution on t... [Read more...]

My last post of substance was all about improving your performance using R to answer programming questions that might be asked during a job interview.  So let's say you nailed the interview and got the job, but you desperately want to be fired for grand incompetence.  Never fear, your pal ... [Read more...]

In marketing mix modelling you have to be very lucky not to run into problems with multicollinearity. It’s in the nature of marketing campaigns that everything tends to happen at once: the TV is supported by radio, both are timed to coincide with the relaunch of the website. One ... [Read more...]

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The StatET team kept their promise and delivered the autorun R console with debug mode on. This, combined with the visual debugger, makes the StatET a very appealing cross-platform environment for working with R. [Read more...]

Here is a quick, draft demo on extracting soils data from a PedonPC database, and performing some common analysis with functions from AQP. The newly released soilDB package makes it possible to rapidly extract soils data from PedonPC, local NASIS, and ... [Read more...]

You need to use the data from internet, but don’t type, you can just extract or scrape them if you know the web URL. Thanks to XML package from R. It provides amazing readHTMLtable() function. For a study case, I want to scrape data: US Airline Custo... [Read more...]

Patrick Burns' informative and entertaining books for R programmers, 'S Poetry' and 'The R Inferno', which have long been available as free downloads, are now available in an attractive hardcover format from Lulu Press and are on 25% sale through the end of January (use discount code LULUBOOKUK305). 'S Poetry', although ... [Read more...]

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Hardcopy versions of both The R Inferno and S Poetry are now available for sale. Physical economy Buy The R Inferno (the version dated 2011 April 30)   Buy S Poetry Discount The publisher, Lulu, has a coupon for a 25% discount off purchases (up to a maximum of $50) that is good until the … ... [Read more...]

Yesterday I pushed an update of my analogue package to CRAN. The new version is 0.8-0 and contains some new functions, several bug fixes and a major change arising from additions to R 2.14.x requiring all packages to have a … Continue reading → [Read more...]

The Eclipse IDE with StatET plugin, developed by Stephen Wahlbrink, is one of the more (maybe the most) full-featured options for running R. I’ve written about this combination before (previous post), but the highlights include a script editor with syntax highlighting, code completion, an integrated graphics window, an advanced ... [Read more...]

This post shares the video from the talk presented On November 30 2011 by Dr Lyndon Walker (see Meetup page) at the end of year function for Melbourne R Users. Lyndon Walker (@lyndonwalker) has been using R for nearly half … Continue reading → [Read more...]

In this open letter to our customers, Revolution Analytics CEO Norman Nie reflects on the accomplishments of the past year. Dear Revolution Analytics Client, I wanted to take this opportunity to wish you all a happy and healthy 2012 and thank you for your support in 2011. Through the efforts of the ... [Read more...]