Monthly Archives: March 2012

R: ifelse statements with multiple variables and NAs

March 27, 2012
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ifelse statements in R are the bread and butter of recoding variables. Normally these are pretty easy to do, particularly when we are recoding off one variable, and that variable contains no missing values. There are lots of examples on how to do this ...

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Ruin probability and infinite time

March 27, 2012
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Ruin probability and infinite time

A couple of weeks ago, I had a discussion with a practitioner, working in some financial company, about ruin, and infinite time. And it remind me a weird result. Well, not a weird result, but a result I found disturbing, at first, when I was a stud...

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Students: Help improve R with the Google Summer of Code

March 27, 2012
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The Google Summer of Code project provides funding for students to write and contribute code to open-source projects of interest to Google. And given that R is widely used at Google, it's certainly a project of significant interest. So for the fifth year running the R Project will mentor students as part of GSOC 2012 to develop packages and...

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R Fell on Alabama–Presentation to Birmingham Open Source

March 27, 2012
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R Fell on Alabama–Presentation to Birmingham Open Source

Birmingham Open Source Software (BOSS) was kind enough to invite me to do a debut presentation on R.  I had a lot of fun.  Below is the embedded Youtube.  Please let me know how I can improve.  I really appreciate helpful feedback.

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Twitter Germany will be based in Berlin – Taking a look at the numbers

March 27, 2012
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Twitter Germany will be based in Berlin – Taking a look at the numbers

What I really love about Twitter is that everything they do seems to be data-based. They’re so data-driven, they even analyze the ingredients of their lunch to ensure everyone at the company is living a healthy lifestyle. So, the decision for Berlin as their German headquarter cannot be a random or value-based decision.

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Social Network Analysis with R

March 27, 2012
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Social Network Analysis with R

By Yanchang Zhao, RDataMining.com If you have tried social network analysis or graph mining with R, you might have already come across package igraph before. The package is designed for graphs and network analysis in R. It can handle large … Continue reading →

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Installing and Running JAGS on Mac OS 10.5.8

March 26, 2012
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Installing and Running JAGS on Mac OS 10.5.8

JAGS is an alternative to BUGS (WinBUGS or OpenBUGS) for conducting a Bayesian Analysis. It stands for Just Another Gibbs Sampler, and like WinBUGS, it is essentially an MCMC machine that employs a Gibbs sampler so you don't have to write your own for ...

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help resources for r: the r-help mailing list, ucla academic technology services, and r-bloggers

March 26, 2012
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(This article was first published on twotorials by anthony damico, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on their blog: twotorials by anthony damico. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps,...

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how to use coercion and convert numbers to characters to logicals in r

March 26, 2012
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(This article was first published on twotorials by anthony damico, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on their blog: twotorials by anthony damico. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps,...

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VIDEO: Applying "SNV" math-treatment to our raw spectra in "R".

March 26, 2012
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VIDEO: Applying "SNV" math-treatment to our raw spectra in "R".

(This article was first published on NIR-Quimiometría, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on their blog: NIR-Quimiometría. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL,...

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