January 2013

A new version of analogue for a new year

January 4, 2013 | ucfagls

Yesterday I rolled up a new version (0.10-0) of analogue, my R package for analysing palaeoecological data. It is now available from CRAN. There were lots of incremental changes to Stratiplot() to improve the quality of the stratigraphic diagrams produced … Continue reading → [Read more...]

What The Smeg? Some Text Analysis of the Red Dwarf Scripts

January 4, 2013 | Myles

Introduction Just as Pocket fundamentally changed my reading behaviour, I am finding that now having Netflix (and even before that, other downloadable or streaming digital content) is really changing my behaviour as far as television is concerned. Where watching TV used to be an affair of browsing through 500 channels and ... [Read more...]

How to make your own 3-D sculpture with R

January 4, 2013 | David Smith

We've mentioned before how you can use R to design 3-D objects. Now, thanks to the latest version of the rgl package, you can produce real-world 3-D objects with R as well. The rgl package has long made it possible to create virtual 3-D objects in R, and export them ... [Read more...]

Twitter Roundup, January 4 2013

January 4, 2013 | Stephen Turner

I've said it before: Twitter makes me a lazy blogger. Lots of stuff came across my radar this week that didn't make it into a full blog post. Here's a quick recap:PLOS Computational Biology: Chapter 1: Biomedical Knowledge IntegrationAssuring the quali... [Read more...]

Armadillo eigenvalues

January 4, 2013 | Rcpp Gallery

Today a (slightly confused) question on StackOverflow wondered how to access R’s facilities for eigenvalues calculations from C code. For this, we need to step back and consider how this is done. In fact, R farms the calculation out to the BLAS.... [Read more...]

Initialize yourself

January 3, 2013 | Phil

[This article was first published on Just Another R Blog, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your [Read more...]

Computers are Machines

January 3, 2013 | John Myles White

When people try out Julia for the first time, many of them are worried by the following example: 1 2 3 4 5 6 7 julia__ factorial(n) = n == 0 ? 1 : n * factorial(n - 1)   julia__ factorial(20) 2432902008176640000   julia__ factorial(21) -4249290049419214848 If you’re not familiar with computer architecture, this [...] [Read more...]

What your choice of statistics software says about you

January 3, 2013 | David Smith

Sean Taylor, a PhD candidate in Information Systems at NYU’s Stern School of Business, describes the "Statistics Software Signal" and his observation that some software packages are correlated with bad science. While, I don't agree with all of his points (some fine analyses have been done with Stata, for ... [Read more...]

Accessing environments

January 3, 2013 | Rcpp Gallery

Extending R with C++ code by using Rcpp typically involves function calls by leveraging the existing .Call() interface of the R API. Passing values back and forth is then done in manner similar to programming with functions. However, on occassion it i... [Read more...]

The GARCH-DCC Model and 2-stage DCC(MVT) estimation.

January 2, 2013 | alexios

This short demonstration illustrates the use of the DCC model and its methods using the rmgarch package, and in particular an alternative method for 2-stage DCC estimation in the presence of the MVT distribution shape (nuisance) parameter. The theoretical background and representation of the model is detailed in the package’... [Read more...]

Genetic Algorithms with gaoptim package

January 2, 2013 | fernando tenorio

Two days ago i just submitted my first R package: gaoptim. For my surprise, the next day it was already living on CRAN. In this post i want to show you how to use gaoptim to perform a simple function maximization. This same task could be accomplished ... [Read more...]

Data-driven science is a failure of imagination

January 2, 2013 | petrkeil

Professor Hans Rosling certainly is a remarkable figure. I recommend watching his performances. Especially the BBC's "Joy of Stats" is exemplary. Rosling sells passion for data, visual clarity and great deal of comedy. He represents the data-driven paradigm in science. What…Read more → [Read more...]

Let’s Rapplicate!

January 2, 2013 | rapporter

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 ...
[Read more...]

R version 3 scheduled for April

January 2, 2013 | David Smith

Ringing in the New Year, Peter Dalgaard announced yesterday on behalf of the entire R Core Team that the R language will graduate to Version 3 around April 1. This is only the third time that R has incremented its primary version number. Version 1.0.0 (released on February 29, 2000) was the first version deemed ... [Read more...]
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