Monthly Archives: June 2010

Efficient Mixed-Model Association eXpedited (EMMAX) to Simutaneously Account for Relatedness and Stratification in Genome-Wide Association Studies

June 9, 2010
By

A few months ago I covered an algorithm called EMMA (Efficient Mixed-Model Association) implemented in R for simultaneously correct for both population stratification and relatedness in an association study. This method/software is very useful because ...

Read more »

Stratified sampling

June 9, 2010
By
Stratified sampling

The recently arXived paper of Goldstein, Rinott and Scarsini studies the impact of refining a partition on the precision of a stratified maximising/integration Monte Carlo approach. Quite naturally, if the partition gets improved, simulating points in each set of the partition can only improve the quality of the approximation, whether the problem is in maximising

Read more »

Go Guerrill-R on Your Data in August

June 8, 2010
By
Go Guerrill-R on Your Data in August

Guerrill-R, get it? Register now for the Guerrilla Data Analysis Techniques (GDAT) class to be held during the week of August 9-13, 2010. The focus will be on using R and the PDQ-R for computer performance analysis and capacity planning.(Click on the...

Read more »

Plotting World Bank Data with R

June 8, 2010
By
Plotting World Bank Data with R

Copy and paste the code listed in this post below, and you can create a plot of World Bank data using R with a call like the following:plotWorldBank('USA','NY.GDP.MKTP.KD.ZG')There is a wealth of economic and demographic available at the World Bank. ...

Read more »

Rcpp 0.8.1

June 8, 2010
By

Early this morning I sent Rcpp version 0.8.1 off to CRAN and Debian. In the meantime, Romain has already provided a very nice blog post about it. There are a few fairly visible new things in this release. As we want to focus the next few minor release...

Read more »

Rcpp 0.8.1

Early this morning I sent Rcpp version 0.8.1 off to CRAN and Debian. In the meantime, Romain has already provided a very nice blog post about it.There are a few fairly visible new things in this release. As we want to focus the next few minor rel...

Read more »

PostGIS in Action Book Review

June 8, 2010
By
PostGIS in Action Book Review

I was recently asked to review a soon to be published book on PostGIS, a spatial extension to the very popular Postgresql relational database. I was very excited about receiving an early copy of this book, as the authors have provided countless tips, ...

Read more »

R is eve R ywhe R e

June 8, 2010
By
R is eve R ywhe R e

R did definitely not start to be THE statistical computing tool. The “two Rs” in far down-under just needed some tool which was not too expensive and structured enough to support the elementary statistics classes filled with hundreds of students. Another constraint was the computing lab which was large enough, but “only” filled with Mac

Read more »

Norman Nie talks R and statistics with CNET’s Dave Rosenberg

June 8, 2010
By

Revolution's CEO Norman Nie recently gave an interview to CNET's Dave Rosenberg, who blogs on disrupting the software market. Among the topics covered: What is R (Nie: "R is the most powerful statistical computing language on the planet"), what is predictive analytics ("statistical modeling by another name") and plans for Revolution R ("we intend to bring predictive analytics to...

Read more »

Rcpp 0.8.1

June 8, 2010
By

We released Rcpp 0.8.0 almost a month ago. It finalized our efforts in designing a better, faster and more natural API than any version of Rcpp ever before. The journey from Rcpp 0.7.0 to

Read more »