Monthly Archives: November 2012

Textual Healing Part II

November 15, 2012
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Textual Healing Part II

Yesterday’s post showed a number of quick coding options for changing text in a basic ggplot. Here’s another two tricks for fine-tuning faceted plots. Again, let’s load our made up data about tooth growth (a real dataset in R, ToothGr...

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Fun with R graphics: A raptor and a cake

November 15, 2012
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Fun with R graphics: A raptor and a cake

I like to explore the graphics features of R.  Base graphics, ggplot2 are my favourites. On  other graphics packages, I haven’t used plotrix much. I am currently exploring grid package. Raptor First one is using ggplot2. (you could also do … Continue reading →The post Fun with R graphics: A raptor and a cake appeared first on...

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Regime Detection Pitfalls

November 14, 2012
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Regime Detection Pitfalls

Today, I want to address some questions that I was getting regarding the Regime Detection post. In the Regime Detection post I showed an example based on the simulated data, and some of you tried to apply this example to actual stocks. There is one big problem that you have to be aware in designing

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Rcpp and the new R:: namespace for Rmath.h

November 14, 2012
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We released Rcpp 0.10.0 earlier today. This post will just provide a simple example for one of the smaller new features -- the new namespace for functions from Rmath.h -- and illustrate one of the key features (Rcpp attributes) in passing. R, as a statistical language and environment, has very well written and tested statistical distribution functions providing probability density, cumulative...

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Webinar Tomorrow: Big Data Trees and Hadoop Connection in Revolution R Enterprise 6.1

November 14, 2012
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Tomorrow at 9AM Pacific, Revolution Analytics VP of Product Development Sue Ranney will introduce two key Big Data features of the new Revolution R Enterprise 6.1. Now you can train classification and regression trees on data sets of unlimited size, quickly and using the resources of multiple processors and clusters. (This white paper describes our implementation of tree models...

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VIDEO: Looking to the loadings in R

November 14, 2012
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VIDEO: Looking to the loadings in R

(This article was first published on NIR-Quimiometria, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on their blog: NIR-Quimiometria. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL,...

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Have my old job!

November 14, 2012
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Have my old job!

My old job at the Health & Safety Laboratory is being advertised, and at a higher pay grade to boot.  (Though it is still civil service pay, and thus not going to make you rich.) You’ll need to have solid mathematical modelling skills, particularly solving systems of ODEs, and be proficient at writing scientific code,

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How the Democrats may have won the House, but lost the seats

November 14, 2012
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How the Democrats may have won the House, but lost the seats

  The 2012 election is over and in the books. A few very close races remain to be officially decided, but for the most part everything has settled down over the last week. By all accounts it was a very good night for the Democrats, with wins in the presidency, senate and state houses. They also performed

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Rcpp 0.10.0

November 14, 2012
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Rcpp release 0.10.0 is now on CRAN and being uploaded to Debian. This is a new feature release, and we are very exciting about the changes, notably Rcpp attributes which make using C++ from R even easier than inline (see below as well as the new vignette for details and first examples), the extensions to Rcpp modules (see below) and more as...

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How to choose your next holidays destination – Uniform distribution on a sphere

November 14, 2012
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How to choose your next holidays destination – Uniform distribution on a sphere

If you want to choose randomly your next holidays destination, you are likely to process in a way which is certainly biased. Especially if you choose randomly the latitude and the longitude. A bit like they do in this lovely advertising (For those of y...

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