August 2010

Wanted: R Analysis of New Scientist Covers

August 30, 2010 | David Smith

Peter Aldhous and Jim Giles -- from New Scientist's San Francisco bureau -- are looking for a statistician and R user to take part in an interesting data analysis challenge, and also be part of a future article in the magazine. They were inspired by this rather tongue-in-cheek presentation where ... [Read more...]

GEO database: curation lagging behind submission?

August 30, 2010 | nsaunders

I was reading an old post that describes GEOmetadb, a downloadable database containing metadata from the GEO database. We had a brief discussion in the comments about the growth in GSE records (user-submitted) versus GDS records (curated datasets) over time. Below, some quick and dirty R code to examine the ... [Read more...]

MCMC Diagnostics in R with the coda Package

August 29, 2010 | John Myles White

This is a follow up to my recent post introducing the use of JAGS in R through the rjags package. In the comments on that post, Bernd Weiss encouraged me to write a short addendum that describes diagnostic functions that you should use to assess the output from an MCMC ... [Read more...]

Beta translation done!

August 29, 2010 | xi'an

Once my team of four translators had handed back to me all the chapters of the French version of Introducing Monte Carlo Methods with R to me, I had to go over the book to ensure some minimal consistency between the chapters. I started the editing in the plane to ... [Read more...]

SST with Raster. Complete

August 29, 2010 | Steven Mosher

Update: new zip, correcting bug found by Steve  McIntyre: if(!file.exists(HadSST2ncdf)) downloadHADSST2() if(!file.exists(HadSST2ncdf)) downloadHadSST2() issue pending with another line as well. Checking raster versions. I’ve also, added some code into “downloadHadSST2″ that corrects for the “NA” problem with HadSST. (currently commented out). ... [Read more...]

Subset views in R

August 28, 2010 | ellbur

I don’t know how to do this in R. So let me just say why I can’t. I wanted something akin to Boost‘s sub-matrix views, where you can have indexes map back to the original matrix, so you don’t create … Continue reading → [Read more...]

Blegging for Data

August 28, 2010 | John Myles White

I’m in the middle of a new project that involves analyzing the packages that are currently on CRAN. As part of my work, I could really benefit from information about which packages are installed on people’s computers. If you’re willing to part with a bit of your ... [Read more...]

Patrick Burns is blogging

August 28, 2010 | Joshua Ulrich

Patrick Burns is the author of several helpful R resources, including A Guide for the Unwilling S User, The R Inferno, and S Poetry. He also wrote one of my favorite critiques of Microsoft Excel: Spreadsheet Addiction. His writing is witty, entertain...
[Read more...]

Mike’s CNC 2010-08-27 18:36:00

August 27, 2010 | Mike Messner

Support the OpenGov idea to create a "Platform for number crunchers across (US Federal) government" HERE. A small team is building a small pilot and I'm happy to report that R appears on many of the posts. If you like the idea (or even if you don't),... [Read more...]

Fractals in R

August 27, 2010 | C

Atte Tenkanen had a blog on fractals using R for a time. Much of his source code is still available online.  To produce his version of the Mandelbrot set:source('http://users.utu.fi/attenka/mandelbrot_set.R')Fractals (such... [Read more...]

Because it’s Friday: How Machines Work

August 27, 2010 | David Smith

Ever wondered how a sewing machine seemingly manages to knot stitches without ever releasing the thread? Well, wonder no more: Find this and other animations of marvels of engineering, including the universal velocity joint and the rotary engine, at the link below. World Of Technology: Complicated Mechanisms Explained in simple ... [Read more...]

Poll: Half of SAS users considering a switch

August 27, 2010 | David Smith

A recent poll of KD Nuggets readers suggests that of those using SAS today, almost half (49.6%) are considering switching to a different system for statistical analysis. The poll was prompted by the recent high court decision in the UK, that affirmed that "WPS is lawful clone of SAS system" (as ... [Read more...]

ProjectTemplate

August 26, 2010 | John Myles White

Introduction As many people already know, I’ve recently uploaded a new R package called ProjectTemplate to GitHub and CRAN. The ProjectTemplate package provides a function, create.project(), that automatically builds a directory for a new R project with a clean sub-directory structure and automatic data and library loading tools. ... [Read more...]

Oh (de)bugger!

August 26, 2010 | richierocks

By number of questions asked, R passed MATLAB for the first time on Stack Overflow today. Thus it seems an appropriate time to write my first R-based post. This post concerns what to  do when your R-code goes pear shaped. Back in June there were a couple of very good ... [Read more...]

New R User Groups in Seoul, Denver

August 26, 2010 | David Smith

We have two new local R user groups to report this week. In Seoul, South Korea R user Chel Hee Lee is the organizer of the GNU R User's Group and Open Statistics Project in Korea. My translate-fu isn't quite up to figuring out when the next meeting is, but ... [Read more...]

In Search of Power-laws: WikiLeaks Edition

August 26, 2010 | Drew Conway

Yesterday, a commenter reminded me of the very popular hobby among scientists of searching for power-law distributions in large event data. While the commonality of scale invariance in event data is quite well known—particularly with respect to conflict data—this has not prevented many researchers from seeking and finding ... [Read more...]
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