A previous post showed how to compute eigenvalues using the Armadillo library via RcppArmadillo. Here, we do the same using Eigen and the RcppEigen package. #include <RcppEigen.h> // ] using Eigen::Map; ...

A previous post showed how to compute eigenvalues using the Armadillo library via RcppArmadillo. Here, we do the same using Eigen and the RcppEigen package. #include <RcppEigen.h> // ] using Eigen::Map; ...

Over on the Clastic Detritus blog, Brian Romans posted a nice introduction to plotting in R. At the end of his post, Brian mentioned he would like to colour in areas under the data curve corresponding to particular ranges of grain sizes. The comment area on a blog isn’t really amenable to giving a full answer to the...

How to replicate a google gauge chart in R? Google charts has several options to produce nice graphics. Most of them have their equivalent function in R and can be quickly replicated, but some of them require a bit of programming. For instance, take the google gauge charts which I really like: A gauge is … Continue reading...

One issue I continuously encounter when starting to work with a new dataset is that of the codebook. In general, I prefer to load a codebook into R like any other data source, specifically as a data frame. And ideally, one data frame to provides the variable names with descriptions and any other meta data available, and a separate...

Factor Analysis of Baseball's Hall of Fame VotersRecently, Nate Silver wrote a post which analyzed how voters who voted for and against Barry Bonds for Baseball's Hall of Fame differed. Not surprisingly, those who voted for Bonds were more likely to vote for other suspected steroids users (like Roger Clemens). This got...

From: http://www.r-bloggers.com/data-driven-science-is-a-failure-of-imagination/I think I like this distinction between Bayesian and Frequentist statistics: "we are nearly always ultimately curious about the Bayesian probability of the hypothesis ...

It's been a while since you last heard from Rapporter, and we came up with a (hopefully) good excuse for our absence from the blogosphere: Rapplications. To demystify: we developed an API that allows you to create dynamic reports by using the R templates and datasets available on Rapporter. All you need is an account on Rapporter (you can...