Monthly Archives: March 2010

RInside release 0.2.2

March 22, 2010
By

The shiny new 0.2.2 release of RInside has just been uploaded to CRAN; it should hit mirrors tommorow. Sources are also at my RInside page. RInside is a set of convenience classes to facilitate embedding of R inside of C++ applications. It works pa...

Read more »

R 2.11.0 scheduled for April 22

March 22, 2010
By

Announced this morning on the r-announce mailing list is the impending release of R 2.11.0, scheduled for April 22. As usual, the release soon goes into a beta-test phase, with updated sources to be available on the 22nd and binaries to follow a few days thereafter.

Read more »

Charting SVN commits with R

March 22, 2010
By
Charting SVN commits with R

Want to get a quick sense of who are the most active committers to your SVN project? Using just a few lines of R code and the SVN log file, reader and new R user Rhys Kidd created this chart to review commits to the Freespace 2 Source Code Project: Rhys posts the 6 lines of R code to...

Read more »

New FECHell 0.1.9

March 22, 2010
By

Our FEC report file library FECHell has been updated to 0.1.9. The release includes a half dozen bug fixes and the following new features: Speed improvements – Schedule and field names names are matched by compiled regular expressions instead of brute-force string matching, resulting in a ~25% speed increase for large files. DEF file fixes

Read more »

Example 7.28: Bubble plots

March 22, 2010
By
Example 7.28: Bubble plots

A bubble plot is a means of displaying 3 variables in a scatterplot. The z dimension is presented in the size of the plot symbol, typically a circle. The area or radius of the circle plotted is proportional to the value of the third variable. This c...

Read more »

A Visual History Of Twitter’s Growth (Updated 2010-08-23)

March 22, 2010
By

Download "Getting Started with the Social Media Analytics Research Toolkit" (pdf, 1.25 megabytes) Download the Social Media Analytics Research Toolkit How The Chart Was Made Whenever a Twitter user posts a tweet, an object is created and entered into t...

Read more »

March insanity

March 22, 2010
By

So I took a brief break from ecology yesterday to pursue another project, modeling the NCAA bracket. I decided to run a stochastic simulation of the tournament. I know this has nothing to do with ecology, but I believe its a good exercise in modeling. Modeling has very little to do with the specifics of a...

Read more »

Health Care Reform vote

March 21, 2010
By
Health Care Reform vote

A little bit of churn relative to the House’s 1st shot at this but otherwise a remarkably similar vote, with an estimated cutpoint almost at the same place; see some raw R output, below the fold, after the thumbnail… y is the vote to take up the Senate amendments; yEarly is the previous go at

Read more »

2010 March Madness Half Marathon in Cary

March 21, 2010
By

The annual March Madness Half Marathon in Cary took place this morning. This is both one of Chicagoland's 'early races' to start the season as well as the classic Boston preparation due to the hilly course. I have now run this consecutively for six y...

Read more »

Converting Siemens MOSAIC

March 21, 2010
By
Converting Siemens MOSAIC

Siemens multi-slice EPI data may be collected as a "mosiac" image; i.e., all slices acquired in a single TR (repitition time) of a functional MRI run are stored in a single DICOM file.  The images are stored in an MxN array of images.  The function create3D() will try to guess the number of images embedded within the single DICOM...

Read more »