From the HRSA website: is a database containing more than 6,000 variables for each of the nation’s counties. ARF contains information on health facilities, health professions, measures of resource scarcity, health status, economic activity, health training programs, and socioeconomic and environmental characteristics. The data file itself is formatted accordingly (from the ARF
Blog Archives
Where’s your high-end sportswear made?
Sierra Trading Post mailed me their End-of-Winter 2011 catalog, which consists mostly of mid- to high-end sportswear products, but also things like snow skis, flashlights, and binoculars. STP sells closeouts, overstock, seconds, and items with cosmetic blemishes or irregularities. I spent an hour of relaxation time enumerating the various product brands and their places of
The Automatic Millionaire & Amortization
Dan Byrne of Vanderbilt University gave me a book back in October titled The Automatic Millionaire by David Bach. The book is an easy read and full of sound advice that I intend to take. Bach espouses a plan for retirement built on the principles of “paying yourself first” (i.e. before taxation, 401(k), 403(b)), making
Bayesian Diabetes Projections by CDC
Bayesian methods are supporting decisions and news at the national level! The Centers for Disease Control and Prevention summarizes a report published in the journal Population Health Metrics. The news also made it to the national media. The report (JP Boyle, TJ Thompson, EW Gregg, LE Barker, and DF Williamson (2010) “Projection of the year
A Not Quite Random Number Generator (NQRNG)
I connected the instrumentation amplifier described in an earlier post to a piezoelectric transducer (buzzer) and made recordings at 5000 gain. The plot below shows 1000 such measurements over 1.0 seconds. There is a 4.0 second (at 1000Hz) sample of the data here piezo.csv. There is a clear sinusoidal signal in these data of about
ECG Project
In an earlier post, I described some ECG signal processing. In fact, these recordings were from my own heart, and I had collected them using a homemade ECG. The following is a repost from my old site describing the device. I assembled an instrumentation amplifier to measure cardiac potentials (i.e. an electrocardiograph (ECG)). The analog-to-digital
Eigenimages: The AT&T Cambridge Faces Database
I picked up the AT&T Laboratories Cambridge database of faces for a clustering application. The database consists of images of 40 distinct subjects, each in 10 different facial positions and expressions. Typically, the goal of clustering in these data is to recover the ‘true’ partition, or that which isolates images of distinct subjects. Each image
Tools for Hacking R: Git + Subversion
In an earlier post, I discussed how to use Subversion to download, edit, and generate a patch against R‘s source code. Since most of us can’t commit our code changes back to R‘s repository, we can consider alternatives to store and maintain our patch, until it is eventually incorporated into R. Of course, our changes
Tools for Hacking R: Subversion
The development version of R is stored in a Subversion repository at the URL http://svn.r-project.org/R/trunk/. In fact, you can browse the source code by clicking the link. Subversion Hierarchy Subversion is software for source code revision control. That means it keeps track of changes, who made them, when they were made, and any comments about
Ed Burnette on Software Patents
Ed Burnette makes a point that hits home, with regard to software patents, and how engineers and programmers of modern companies are now being asked to write them: Unfortunately, the joke is on all of us. It’s on our economy, as we let patents choke down innovation and increase fear, uncertainty, and doubt in an
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
