Blog Archives

Simulation (is where it’s happening)

November 18, 2013
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Simulation (is where it’s happening)

Jim Silverton wrote to the Allstat mailing list recently: “Hi, Anyone up for a challenge? Suppose we have random variables that are random points on the surface of a sphere. What is the probability that the tetrahedron made by joining these … Continue reading →

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Software inter-operability meeting in London

November 8, 2013
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Software inter-operability meeting in London

On the afternoon of 14 November, the RSS is hosting a joint meeting with the International Biometric Society at Errol Street. The topic is inter-operability, as in software packages talking to each other to make your life easier. This is … Continue reading →

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R tips for moderately large data

September 16, 2013
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R tips for moderately large data

Some useful tips recently featured on r-bloggers and originally posted at Mollie’s Research Blog are worth reading. I say moderately large because I don’t really believe there is such a thing as big data (and it looks like Mollie doesn’t … Continue reading →

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LondonR lightning talk: Audiblization / sonification of data

July 30, 2013
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LondonR lightning talk: Audiblization / sonification of data

It looks like the next LondonR meeting on 10 September 2013 will involve a series of 5 minute lightning talks rather than a few half hour slots. I have proposed “Audiblization / sonification of data: what are people doing and … Continue reading →

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Easy pictograms using R

July 26, 2013
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Easy pictograms using R

I have been amazed for a while that there is no major stats software offering pictograms. You know the sort of classic infographic I mean: Well, I have been working on an R function to help with this. It’s at … Continue reading →

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R2leaflet (v0.1) – make interactive online maps from R

June 11, 2013
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R2leaflet (v0.1) – make interactive online maps from R

I have been working on a simple R function to take latitude and longitude of points of interest, and text for pop-up labels, and produce an interactive online map. Interactive graphics are incredibly useful in getting people interested in your … Continue reading →

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Convert IP addresses to geolocation, latitude and longitude etc etc

May 29, 2013
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Convert IP addresses to geolocation, latitude and longitude etc etc

Whoa! Now this is cool. It turns out there is a database at freegeoip.net which you can query for the location of a particular IP address. And as it has a neat little API for batches of IPs, you can … Continue reading →

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Survival of the sweetest

December 12, 2012
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Survival of the sweetest

On receiving an advent calendar from one of our course directors, I suggested we could track each other’s chocolate consumption in a survival analysis and establish who was eating significantly more chocs. Strangely, everybody refused to take part, so I … Continue reading →

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Multidimensional scaling of REM album covers: FlagSpace revisited

December 11, 2012
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Multidimensional scaling of REM album covers: FlagSpace revisited

By way of following up on an old in-joke, and doing something constructive because I couldn’t get to sleep, I thought I would revisit the Flag Space plot that I blogged about a while back and learn how to do it. … Continue reading →

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Exporting data from R into WinBUGS’s “R/S-plus list format”

November 27, 2012
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Exporting data from R into WinBUGS’s “R/S-plus list format”

Users of the world’s favourite Bayesian analysis software WinBUGS will recognise the strange format in which data is supplied inside the GUI, generally in a text file looking something like this: list(x=c(1,2,3,4,5,6),y=c(4,8,2,6,9,9)) This is of course an R (or strictly … Continue reading →

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