This post was inspired by some musings from John Bollinger that as data in the financial world wasn’t normally distributed, … Continue reading → [Read more...]

DataScience.LA has posted a great recap of the latest LA R meetup, which in turn was a recap of presentations from the useR! 2014 conference. Follow that link to review slides from the event, whith summaries of useR! 2014 related to R and Python; Finance; dplyr; R books; SalesForce and R ... [Read more...]

What Can Plotly Do For You? We’ve just posted a full length piece that answers the “who, what, when, where, why, and how” when it comes to Plotly, and you can find it here. In our post, we walk-through all the aspects and benefits of making and sharing this ... [Read more...]

This is the bimonthly R Jobs post (for 2014-09-10), based on the R-bloggers’ sister website: R-users.com. This time, I’d like to start by thanking Jeff Weakley [Read more...]

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Last week the LA R meetup featured 5 speakers each highlighting a few things they... [Read more...]

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Quantide is organizing a course about advanced R Progra […] [Read more...]

I am interested in generating 3D reasoning items in R. To this end I have adapted some of the awesome functions built in the rgl library to my ends. My new function is 'cube' and it takes position and automatically sizes itself as a 1x1x1 cube though t... [Read more...]

Goal: determine how accurate Next Bus predictions are Step 1: Create a timeseries Step 2: Flag arrivals and departures Step 2: Filter Step 3: Calculate error in Next Bus predictions Step 4: Write out data to csv In a the previous post we extracted Next Bus predictions from the Wmata API. If that’s too ... [Read more...]

A kind reader commented “Don’t know if you have seen it, but Frazzini goes French now too” .  I have profusely thanked and praised Kenneth French for his incredible data library.  Now, it appears I’ll have to repeatedly do the same for Andrea... [Read more...]

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by Seth Mottaghinejad Let's review the Collatz conjecture, which says that given a positive integer n, the following recursive algorithm will always terminate: if n is 1, stop, otherwise recurse on the following if n is even, then divide it by 2 if n is odd, then multiply it by 3 and add 1 ... [Read more...]

Heather Turner is a biostatistician and Senior Research Fellow at the University of Warwick, as... [Read more...]

The next Cologne R user group meeting is scheduled for this Friday, 12 September 2014.We have a great agenda with international speakers: Maarten-Jan Kallen: Introduction to Renjin, the R interpreter for the JVM Jonathan Cornelissen, Martijn Theuwissen: DataCamp - An online interactive learning platform for R The event will be followed ... [Read more...]

Recently, I gave a webinar on some introductory quantstrat. Here’s the link. So to follow up on it, I’m going … Continue reading → [Read more...]

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The Transport Map Books are available for each local authority district in England and present a series of maps related to commuting behaviour. The data are derived from multiple sources including: the 2011 Census, Department for Transport estimates and the results of a research project looking at carbon dioxide emissions linked ... [Read more...]

I was recently invited to write a book review for Applied Spatial Analysis and Policy (ASAP). The book, I conclude, “is the authoritative resource on R’s spatial capabilities” and should be of interest to many R users. Below is a preprint of the full review, now published on ASAP’... [Read more...]

I have been working quite a lot with climate and weather data, to study the impact of rainfall shocks on violence in India and how this relationship changed, after the social insurance scheme NREGA was introduced. In my context, it becomes particularly relevant to adjust for spatial correlation if you ... [Read more...]