Blog Archives

So you want to be a Data Science superstar

January 22, 2016
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So you want to be a Data Science superstar

Big house? Five cars? There’s no one universal way to do it, but get a coffee and read on through this bumper post to find your own way with the advice of real experts. Last summer, Mrs G and I … Continue reading →

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Everything you need to make R Commander locally (packages, dependencies, zip files)

October 22, 2015
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Everything you need to make R Commander locally (packages, dependencies, zip files)

I’ve been installing R Commander on laptops for our students to use in tutorials. It’s tedious to put each one online with my login, download it all, then disable the internet (so they don’t send lewd e-mails to the vice-chancellor … Continue reading →

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Showing a distribution over time: how many summary stats?

August 13, 2015
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Showing a distribution over time: how many summary stats?

I saw this nice graph today on Twitter, by Thomas Forth: but the more I looked at it, the more I felt it was hard to understand the changes over time across the income distribution from the Gini coefficient and … Continue reading →

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St Swithun’s Day simulator

July 15, 2015
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St Swithun’s Day simulator

I got a bit bored (sorry Mike), and wrote this. I didn’t take long (I tell you that not so much to cover my backside as to celebrate the majesty of R). First, I estimated probabilities of a day being … Continue reading →

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Roman dataviz and inference in complex systems

May 29, 2015
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Roman dataviz and inference in complex systems

I’m in Rome at the International Workshop on Computational Economics and Econometrics. I gave a seminar on Monday on the ever-popular subject of data visualization. Slides are here. In a few minutes, I’ll be speaking on Inference in Complex Systems, … Continue reading →

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Slice bivariate densities, or the Joy Division “waterfall plot”

October 8, 2014
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Slice bivariate densities, or the Joy Division “waterfall plot”

This has been on my to-do list for a long old time. Lining up slices through a bivariate density seems a much more intuitive way of depicting it than contour plots or some ghastly rotating 3-D thing (urgh). Of course, … Continue reading →

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Transparent hurricane paths in R

October 1, 2014
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Transparent hurricane paths in R

Arthur Charpentier has written a really nice blog post about obtaining hurricane tracks and plotting them. He then goes on to do other clever Markov process models, but as a dataviz guy who knows almost nothing about meteorology, I want to … Continue reading →

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Save your simulation study seeds

September 11, 2014
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Save your simulation study seeds

Here in the Northern hemisphere, gardeners are gathering seeds from their prize-winning vegetables are storing them away for next year’s crop. Today at the 20th London Stata Users’ Group meeting, I learnt a similar trick. It’s strange I never thought … Continue reading →

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Two handy documents for making good UK maps

July 4, 2014
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Two handy documents for making good UK maps

Everybody loves a good map. Even if you don’t have any reason to make one, your boss will love it when you do, so check this out and get yourself a pay rise (possibly). First, this set of diagrams via … Continue reading →

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Meta-analysis methods when studies are not normally distributed

June 10, 2014
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Meta-analysis methods when studies are not normally distributed

Yesterday I was reading Kontopantelis & Reeves’s 2010 paper “Performance of statistical methods for meta-analysis when true study effects are non-normally distributed: A simulation study“, which compares fixed-effects and a variety of random effects models under the (entirely realistic) situation … Continue reading →

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