I have fixed a small bug in mtable-ext that prevented asterisks from being printed for negative coefficients in mixed effects models output by lme4. Thanks to Reinhold Kliegl and Martin Elff for pointing out the bug and for providing the … Continue reading → [Read more...]

This is a guest post by Kyle Stokley. ————— My name is Kyle and I am an IT recruiter for R-Square.  I currently have an opening in Durham NC [Read more...]

The Knowledge Blog progect is a new, light-weight way of publishing scientific, academic and technical knowledge on the web, across several scientific disciplines. One such discipline is bioinformatics, and the Bioinformatics Knowledgeblog contains useful scientific reference material for bioinformatics, including several resources for R users. There you'll find an R ... [Read more...]

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cloudnumbers.com provides researchers and companies with the resources to perform high performance calculations in the cloud. We currently focus on the well-known open-source statistics program R (https://www.r-project.org). R is a strongly functional language and environment for statistical computing. You can explore data sets, make graphical displays ... [Read more...]

It was proposed by Christian Goldbach that every odd composite number can be written as the sum of a prime and twice a square. 9 = 7 + 212 15 = 7 + 222 Read More: 461 Words Totally [Read more...]

It’s been a long journey and there are some people to thank for helping me along the way. Steve McIntyre, Ron Broberg, Jeff Id, Ryan ODonnell, RomanM, Nick Stokes, Robert Hijmans, Gabor  Grothendieck, Hadley Wickham, David Winsemius, and countless others on the R Help list. The Package is done. ... [Read more...]

Disclaimer: All prices and classes are approximate and should be confirmed at www.statistics.com as they can change. A comment from my previous post asked me about the experience I had in taking courses from statistics.com (www.statistics.com). To help... [Read more...]

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Some friends asked me about how to built population pyramids with confidence intervals in R. When I did my own probabilistic population projections, I had the same trouble, unfortunately there is no library to do that. So here I share the code I wrote:... [Read more...]

This post is a call for both R community members and R-bloggers, to come and help make The R Programming wikibook be amazing. The R Programming wikibook is not just another one of the many free books about statistics/R, it is a community project which aims to create a ... [Read more...]

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The Parco Nazionale Gran Paradiso and the Università di Pavia are organising a summer school on “Advances in species distribution modelling in ecological studies and conservation” in Pavia and Cogne, 12-18 September 2011. This school includes R and Winbugs tutorials, regular classes, plus a field trip to the park, so this ... [Read more...]

In this post, I’ll take a look at using R.NET with the creation of an application written in C#. As …Continue reading » [Read more...]

This is one of my favourites: in 1840 the German mathematician Dirichlet proved an elegant theorem, known as “Dirichlet’s approximation theorem“. The proof is surprisingly simple, but the usefulness of the proposition in some fields of mathematics, such as Diophantine analysis is remarkable. It goes as follows: Let a be ... [Read more...]

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I've written before about the up- and downsides of the plyr package -- I love it's simplicity, but it can't be mindlessly applied, no pun intended. This week, I started building a agent-based model for a large population, and I figured I'd use something like a binomial per-timestep birth-death process ... [Read more...]

This fall, I’ll be teaching a second-year course on Probability with Computer Applications, which is required for Computer Science majors.  I’ve taught this before, but that was five years ago, so I’ve been looking to see what new textbooks would be suitable.  The course aims not just ... [Read more...]