January 2011

gnmplot

January 13, 2011 | Malarkey

I'm writing a new package that will create nice publication quality graphics of genome information. It's really an adaptor sitting between the biomaRt and ggplot2 packages. Here is the code so far: ## this function integrates 3 steps to creating a g... [Read more...]

prettyR

January 13, 2011 | Malarkey

I have just remembered a package called 'prettyR' that pretty much does what it says. It makes R code more readable.. so an example from my forthcoming genomeplot package (see forthcoming blog entry):   ## this function integrates 3 steps to creat... [Read more...]

R Code for googleVis Demo

January 12, 2011 | Matt Bogard

# ------------------------------------------------------------------# | PROGRAM NAME: googleVis_R# | DATE: 1/12/11 # | CREATED BY: Matt Bogard# | PROJECT FILE: # |----------------------------------------------------------------# | PURPOSE: ...
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R: Attack of the hair-trigger bees?

January 12, 2011 | Matt Asher

In their book “Complex Adaptive Systems”, authors Miller and Page create a theoretic model for bee attacks, based on the real, flying, honey-making, photogenic stingers. Suppose the hive is threatened by some external creature. Some initial group of guard bees sense the danger and fly off to attack. As they ... [Read more...]

CosmoPMC released

January 12, 2011 | xi'an

Martin Kilbinger, an astronomer (cosmologist) with whom we had worked on population Monte Carlo for cosmological inference [during the ANR-05-BLAN-0283- 04 ANR ECOSSTAT grant], has made the PMC C codes available on the CosmoPMC webpage. He has also written a CosmoPMC manual that is now available from arXiv. And ...
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Initial Work on a Post Not Yet Completed

January 12, 2011 | --

It’s no secret I have been learning R for some time now, and one of the best resources out there is the hashtag rstats on twitter (#rstats).  There is a tremendous community of active users who are always willing to help, but not to mention, you can get a ... [Read more...]

Winners of Mozilla Open Data Competition announced

January 12, 2011 | David Smith

The winners of the Mozilla Open Data Visualization competition "How Do People Use Firefox" have been announced. The competition attracted 32 entries, each visualizing an aspect of data collected in the Mozilla Test Pilot program to reveal insights about how people use the popular open-source browser Firefox. I was honoured to ... [Read more...]

Random variable generation (Pt 3 of 3)

January 12, 2011 | csgillespie

Ratio-of-uniforms This post is based on chapter 1.4.3 of Advanced Markov Chain Monte Carlo.  Previous posts on this book can be found via the  AMCMC tag. The ratio-of-uniforms was initially developed by Kinderman and Monahan (1977) and can be used for generating random numbers from many standard distributions. Essentially we transform the ... [Read more...]

RProtoBuf 0.2.2

January 12, 2011 | Thinking inside the box

Thanks to two patches by Murray Stokely, we have a nice new minor release 0.2.2 of RProtoBuf out on CRAN. RProtoBuf provides GNU R bindings for the Google Protobuf data encoding library used and released by Google. The NEWS file entry follows bel... [Read more...]

Two short Bayesian courses in South’pton

January 12, 2011 | xi'an

An announcement for two short-courses on Introduction to  Bayesian Analysis and MCMC, and Hierarchical Modelling of Spatial and Temporal Data by Alan Gelfand (Duke University, USA) and Sujit Sahu (University of Southampton, UK), are to take place in Southampton on June 7-10, this year. Course 1: Introduction to Bayesian Analysis and ... [Read more...]

The number 1 novice quant mistake

January 12, 2011 | Pat

It is ever so easy to make blunders when doing quantitative finance.  Very popular with novices is to analyze prices rather than returns. Regression on the prices When you want returns, you should understand log returns versus simple returns. Here we will be randomly generating our “returns” (with R) and ...
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Create Motion Charts in R with the GoogleVis package

January 11, 2011 | David Smith

Hans Rosling popularized Motion Charts -- 2-d scatterplots that animate over time -- with the GapMinder project. Motion Charts were taken to their augmented-reality extreme in this clip from the BBC programme, The Joy of Stats, but now you can create similar (if less audacious) motion charts for yourself with ... [Read more...]

Platinum – Palladium relationship

January 11, 2011 | Lloyd Spencer

Ok, so they start with the same letter and are part of the same group of elements, but why are they so often proposed as pairs in trading strategies?  As a spread strategy they look especially tempting right now:Palladium outshone Platinum for most of 2010.  Is the run over?  Or ... [Read more...]

Introducing the Lowry Plot

January 11, 2011 | richierocks

Here at the Health and Safety Laboratory* we’re big fans of physiologically-based pharmacokinetic (PBPK) models (say that 10 times fast) for predicting concentrations of chemicals around your body based upon an exposure. These models take the form of a big system of ODEs. Because they contain many equations and consequently ...
[Read more...]

Data-Driven Journalism

January 11, 2011 | VCASMO - drewconway

The December 2010 meeting of the Bay Area R Users Group featured Peter Aldhous, San Francisco bureau chief of New Scientist magazine who will give a presentation on "Data-Driven Journalism". From the WikiLeaks War Diaries, to geographical analyses of ... [Read more...]
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