April 2015

Financial Times tracks unemployment with R

April 20, 2015 | David Smith

The FT Data section of the Financial Times now has a neat interactive unemployment tracker (free but onerous registration required) that lets you explore employment rates and trends in EU member countries from 2004-2013: The graphic was created by FT Data Journalist John-Burn Murdoch with R. To automate the process ... [Read more...]

R, GRanges objects and intersecting them

April 20, 2015 | Christopher Wardell

I discovered unpredicted behavior when intersecting GRanges objects; this is how to avoid the same problem I found.  Maybe my intuition wasn’t good, but this represents the a bad type of bug; a silent one.  If I had not spotted it, I would have lost several nonsynonymous KRAS mutations ... [Read more...]

R 3.1 -> 3.2 upgrade notes

April 19, 2015 | nsaunders

My machines upgraded from R version 3.1.3 to version 3.2.0 last week, which means that existing code suddenly cannot find packages and so fails. Some notes to myself, possibly useful to others, for what to do when this happens. Relevant to Ubuntu-based systems (I use Linux Mint). 1. Update packages 1.1. rJava issues My ... [Read more...]

R vs QGIS for sustainable transport planning

April 19, 2015 | Robin Lovelace - R

The 23rd iteration of the GIS Research UK conference (#GISRUK) conference was the largest ever. 250 researchers, industry representatives and academics attended from the vibrant geospatial research communities in the UK, Europe and beyond. GISRUK has become a centrepoint for discussion of new methods, software and applications in the field. I ...
[Read more...]

Age & Growth with R (Portland, Oregon)

April 19, 2015 | dogle

I (and Northland alum Taylor Stewart) will be leading a continuing education course on using R for typical age and growth analyses as part of the national American Fisheries Society conference in Portland, OR.  Here is the announcement on the conference webpage … Continue reading → [Read more...]

Boston Elite Field 2015

April 19, 2015 | jlebeau

Last year I posted about how chances of a non-African country winning the Boston Marathon seemed to be good because of the widening interval of winning times (more recently there had been some historically "slower" races and some historically "faster" ... [Read more...]

PK analysis: Theoph again

April 19, 2015 | Wingfeet

This week I wanted to repeat the Theoph PK analysis of two weeks ago in Stan. It also suddenly dawned on me. For a non-linear model in classical statistics we think it normal to provide good initializations. In contrast, for those MCMC samples I rememb... [Read more...]

How to convert an R data.tree to JSON

April 18, 2015 | gluc

I have recently published the data.tree R package to CRAN. It provides OO-style tree building, with standard tree traversal methods. Read the vignette about data.tree features if you are interested, or the one explaining how to use data.tree for classification models. I’ve been asked how to ... [Read more...]

ID3 Classification using data.tree

April 17, 2015 | gluc

Introduction About this vignette What is ID3? Feature Selection Purity and Entropy Information Gain The ID3 algorithm Pseudo code Implementation in R with the data.tree package Training with data Prediction The prediction method Using the prediction method While preparing this example, I asked my nine-year-old daughter, “Anaïs, imagine ... [Read more...]

The Non-parametric Bootstrap as a Bayesian Model

April 17, 2015 | Rasmus Bååth

The non-parametric bootstrap was my first love. I was lost in a muddy swamp of zs, ts and ps when I first saw her. Conceptually beautiful, simple to implement, easy to understand (I thought back then, at least). And when she whispered in my ear, “I make no assumptions regarding ... [Read more...]

It’s a Batsman’s World (Cup)

April 17, 2015 | Patrick Rhodes

The 2015 Cricket World Cup rewrote the record books in dramatic fashion. Amidst the usual insanity that surrounds this event, there were some amazingly good - and bad - performances. Batting-wise, some of the previous records were smashed int...
[Read more...]

R 3.2.0 released

April 17, 2015 | David Smith

The R Core Team announced yesterday that the latest update to R, R 3.2.0 (codename: "Full of Ingredients") is now available. As of this writing the source bundle is available for download, but Mac and Windows binaries aren't yet available. You should be able to download them from your local CRAN ... [Read more...]

Animated great circles 2: smoother lines

April 16, 2015 | Matt Leonawicz

Here is draft two of my great circle arcs R animation. This time I focused on improving the smoothness of the lines and removing some buggy line behavior, keeping it on a flat map for now. As with DRAFT 1, the YouTube video is of significantly reduced quality, to the point ... [Read more...]
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