September 2010

Did what you write drive what I read?

September 16, 2010 | 0 Comments

GoogleReader allows you to track your activity, by representing the number of news items read and published by day and by hour. I use it quite a lot to stay up to date with the scientific literature (I subscribed to probably over 30 journals) and a bunch of other feeds. Stuff ... [Read more...]

Three dimensional plots using rgl package

September 15, 2010 | 0 Comments

We all know that R can do amazing things including 3 dimensional plots. scatterplot3d is probably the most popular package for doing this. But a few days ago I got introduced with rgl package which can do 3 dimensional graphs with some added advantages like we can rotate the plot using ... [Read more...]

New R User Group in Brisbane

September 15, 2010 | 0 Comments

There are now four -- count 'em, four -- local R user groups in Australia, with the addition of the latest group in Brisbane, Queensland. GRUB (Group for R Users in Brisbane) is just getting started and doesn't have a meeting scheduled yet, but if you're in the vicinity why ... [Read more...]

R Function Reference

September 15, 2010 | 0 Comments

The R Function Reference is a mind map that I've created to help novice and intermediate R users perform common tasks and analyses. [Read more...]

Who’s the best all rounder in World Cup Cricket history?

September 14, 2010 | 0 Comments

We love cricket all rounders (players who can both bat and bowl). These players are great assets for their teams and captains love 'em. So, who are the best all rounders in World Cup Cricket history?Kapil, Steve Waugh and Jayasuriya have all performed ...
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Who’s the best bowler in World Cup Cricket history?

September 14, 2010 | 0 Comments

We've witnessed many great bowlers in World Cup Cricket - Shane Warne and Murlidharan, the spin wizards, and Wasim Akram and Waqar Younis, the toe-breakers. However, the data indicates that the marathon man, the-run-up-and-bowl-accurately guy, Glen McG...
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Who’s the best batsman in World Cup Cricket history?

September 14, 2010 | 0 Comments

There have been many debates on identifying the best batsman in World Cup Cricket. Here's one way to determine it. The data shows Sachin Tendulkar as the best ever based on total runs scored (large bubble size), strike rate and runs/game. Bow to the ma...
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News on MCMSki III

September 14, 2010 | 0 Comments

Here is a message sent by the organisers of MCMSki III in Utah next early January. When registering, make sure to tick the free registration for Adap’skiii as well! The fourth joint international meeting of the IMS (Institute of Mathematical Statistics) and ISBA (International Society for Bayesian Analysis), nicknamed “...
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Introducing RevoDeployR: Web Services for R

September 14, 2010 | 0 Comments

Today, Revolution Analytics announced another add-on to R as part of Revolution R Enterprise. RevoDeployR is a Web Services framework for R, designed to make it easy to scalably and securely integrate computations done in R into other applications like spreadsheets and web pages. The idea is simple: as an ... [Read more...]

Which functions in R base call internal code?

September 14, 2010 | 0 Comments

In a recent question on Stack Overflow about speeding up group-by operations, Marek wondered which functions called .Internal code (and consequently were fast). I was surprised to see that there appears to be no built-in way to check whether or not this is the case (though is.primitive is available ...
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Some useful bar plots using R

September 14, 2010 | 0 Comments

In this article I am trying to show how to produce bar plots using R. Many of my friends think SPSS is the most useful software for producing plots and they keep using it (some of them even use Excel!). My goal is to show that R can do every ... [Read more...]

Example 8.5: bubble plots part 3

September 14, 2010 | 0 Comments

An anonymous commenter expressed a desire to see how one might use SAS to draw a bubble plot with bubbles in three colors, corresponding to a fourth variable in the data set. (x, y, z for bubble size, and the category variable.) In a previous entries...
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A Not Quite Random Number Generator (NQRNG)

September 13, 2010 | 0 Comments

I connected the instrumentation amplifier described in an earlier post to a piezoelectric transducer (buzzer) and made recordings at 5000 gain. The plot below shows 1000 such measurements over 1.0 seconds. There is a 4.0 second (at 1000Hz) sample of the data here piezo.csv. There is a clear sinusoidal signal in these data ...
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10w2170, Banff [2]

September 13, 2010 | 0 Comments

Over the two days of the Hierarchical Bayesian Methods in Ecology workshop, we managed to cover normal models, testing, regression, Gibbs sampling, generalised linear models, Metropolis-Hastings algorithms and of course a fair dose of hierarchical modelling. At the end of the Saturday marathon session, we spent one and half discussing ...
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R 2.12.0 scheduled for October 15

September 13, 2010 | 0 Comments

Just announced: the next release of R, version 2.12.0, will be released on October 15 (in source code form; binaries usually follow the same day or soon thereafter). Looking at the NEWS file, this release features several dozen tweaks and bug fixes to... [Read more...]

the spatial concentration of Green support

September 13, 2010 | 0 Comments

I did some poking and prodding of the polling place data, looking at the way Green support is highly concentrated in the inner-capital cities (and in Melbourne and Sydney, in particular). There are a few interesting exceptions that will make sense to...
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Ross Ihaka to R: Drop Dead

September 13, 2010 | 0 Comments

Christian Robert posts these thoughts: I [Ross Ihaka] have been worried for some time that R isn't going to provide the base that we're going to need for statistical computation in the future. (It may well be that the future... [Read more...]
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