Keith Briggs published a post here on names of English place name element distribution, which contains almost twenty maps like the one where names ends by -bourn,bourne,burn (here) or -head (there). Actually, it is possible (Robin mentioned that a... [Read more...]

A short update on network+intergraph R packages story: Couple of days ago Carter Butts released a new version of the ‘network’ package (ver. 1.5-1). It has a namespace now. Consequently, the ‘intergraph’ package should work out-of-the-box. There is no need to install my hacked version of the ‘network’ package ... [Read more...]

If you need to generate synthetic wind speed time series, you may find useful the procedure described in  “A Markov method for simulating non-gaussian wind speed time series” by G.M. McNerney and P.S. Veers (Sandia Laboratories, 1985), and “Estimation of extreme wind speeds with very long return periods” by ... [Read more...]

There are many implantation in R already of ROC plots (e.g. in the packages PresenceAbsence, ROCR). I just wrote my own very simple script just to get a better understanding of it. [Read more...]

In previous posts (here and here) we created a simple function that returns a single numeric value. In some situations it may be more useful to return a more flexible data type, such as a list object, to provide more information about the calculations that have been performed. We can ... [Read more...]

As noted on the Google Open Source Blog last week, R package authors Dirk Eddelbuettel and Romain Francois recently gave a presentation on R at the Googleplex, on various topic related to "bridging" R into other systems. Their 90-minute talk is available for replay on YouTube (as part of the ... [Read more...]

In the last six months or so, the behemoth of Q & A sites stackoverflow, decided to change tack and launch a number of other non-computing-language sites. To launch a site in the stackoverflow family, sites have to spend time gathering followers in Area51. Once a site has gained a critical ... [Read more...]

NuPoP Nucleosome positioning predictionMulcom Differential expression and false discovery rate calculation through multiple comparisonontoCAT Ontology parsingBHC Bayesian Hierarchical ClusteringiSeq Bayesian Hierarchical Modeling of ChIP-seq... [Read more...]

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Today, I will try to change the labels of the x and y axis. [Read more...]

Noise can be classified as pollution and lawmakers often (always?) treat it as such. Noise can have different origin points, point source being among the simplest to model. Because noise has broader health implications, being able to understand its propagation, a simple model can further our understanding in toning down ... [Read more...]

Having always appreciated the red and blue cartograms and cartographs of geographic electoral preferences, such as those made available by Mark Newman, I sought to produce similar maps, but include information about support for non-“state-sponsored” parties, and to extend the coverage back in time. I was able to find ... [Read more...]