Mapping out Marriott’s Starwood Acquisition
By Joseph Rickert by Michael Helbraun The software business includes travel, and that means hotels. The news that Marriott was acquiring Starwood was of particular interest to me – especially since...
View ArticleFitting linear mixed models for QTL mapping
By Karl Broman (This article was originally published at The stupidest thing… » R, and syndicated at StatsBlogs.) Linear mixed models (LMMs) have become widely used for dealing with population...
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TreeMap World Population visualisation
By gluc This example is inspired by the examples of the treemap package. You’ll learn how to convert a data.frame to a data.tree structure navigate a tree and locate specific nodes use Aggregate and...
View ArticleHow to store and use webservice keys and authentication details with R
By Andrie de Vries by Andrie de Vries (@RevoAndrie) I frequently get asked the question how you can safely store login details and passwords for use by R, without exposing these details in your script....
View ArticleEven the tiniest error messages can indicate an invalid statistical analysis
By John Johnson The other day, I was reading in a data set in R, and the function indicated that there was a warning about a parsing error on one line. I went ahead with the analysis anyway, but that...
View ArticleDeaths from assault over time in 40 relatively rich countries
By Peter’s stats stuff – R Deaths from assault A friend was looking at comparative data on violent deaths in a range of countries and I couldn’t resist the chance to turn out some graphics. The data...
View ArticleBecause it’s Friday: Great Ball Contraptions
By David Smith This ball-moving machine, made out of Lego Mindstorms, gives a Rube Goldberg a run for the money: This amazing contraption, built by a Japanese Lego enthusiast in 2012, moves one ball...
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Reflections from the Big Data Week Conference Part 2: Technology Track
By Mango Blogger By Paulin Shek Despite being only a day conference, a large range of topics were covered over many sectors, with a very long list of impressive speakers. This event was a great...
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Reflections from the Big Data Week Conference Part 1 – Data: The Bigger the...
By Mango Blogger By Hannah Evans Big Data Week London 2015: a festival of social data around the globe. Fantastically organised and executed by all, the event brings together 400 speakers in 40...
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R User Group Activity 2015
By Joseph Rickert by Joseph Rickert 2015 has been a good year for R user groups, both in terms of activity and the number of new groups founded. The plot below which runs 12/30/2012 through the week...
View ArticleEfficient aggregation (and more) using data.table
By David Kun In my recent post I have written about the aggregate function in base R and gave some examples on its use. This post repeats the same examples using data.table instead, the most efficient...
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What the candidates say, analyzing republican debates using R
By En El Margen – R-English As most people realize, this is probably one of the most data-rich primary campaigns in history, with hundreds of professional pollsters poring over every data-point trying...
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Additional thoughts about ‘Lorenz curves’ to compare models
By arthur charpentier A few month ago, I did mention a graph, of some so-called Lorenz curves to compare regression models, see e.g. Progressive’s slides (thanks Guillaume for the reference) The idea...
View ArticleThe hidden benefits of open-source software
By Rob J Hyndman I’ve been having discussions with colleagues and university administration about the best way for universities to manage home-grown software. The traditional business model for...
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gtrends 1.3.0 now on CRAN: Google Trends in R
By Thinking inside the box Sometime earlier last year, I started to help Philippe Massicotte with his gtrendsR package—which was then still “hiding” in relatively obscurity on BitBucket. I was able to...
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Wind in Netherlands II
By Wingfeet Two weeks ago I plotted how wind measurements on the edge of the North Sea changed in the past century. This week the same dataset is used for hypothesis testing. Data The most important...
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Introduction to Circular Statistics – Rao’s Spacing Test
By Beau Lucas Today will be a brief introduction in to circular statistics (sometimes referred to as directional statistics). Circular statistics is an interesting subdivision of statistics involving...
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14 (new) R jobs from around the world (for 2015-11-30)
By Tal Galili This is the bi-monthly R-bloggers post (for 2015-11-30) for new R Jobs. To post your R job on the next post Just visit this link and post a new R job to the R community (it’s free and...
View ArticleEmojis in ggplot graphics
By David Smith R user David Lawrence Miller has created an extension for R’s ggplot2 package that allows you to use emojis as plotting symbols. The emoGG package (currently only available on github)...
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laptop-friendly analysis of the census of 82 countries with r and monetdb
By Anthony Damico the integrated public use microdata series international (ipumsi) has been my white whale since i started in survey research. non-demographers, perhaps think of this repository as a...
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