Keeping track of versions You work on a project and would like to keep track of what you did. That is why keep old versions of your files. That way you can go back if you messed up beyond recognition. Usually that looks like this: Or you use dropbox or ...

Conway’s Game of life is probably the most famous cellular automaton, consisting of a grid of cells developing according simple rules. Today, we’re going to add mutation and selection to the game, and see let patterns evolve. The fate of a cell depends on the number cells that ...

2 Years, are a long time. For a blogger wannabe for sure. 2 years since my last post, a lot has happened and my skills have broadened beyond R, so this R dedicated blog, might not speak about R so much, maybe some other things. I’ve received some good comments from ...

This is based on joint work with Gregor Aisch and Josh Keller of the New York Times. A new package gunsales is now on the CRAN network for R. It is based the NYTimes/gunsales repository underlying the excellent New York Times visualizations, first published first in December 2015 and updated ...

After releasing my course Mapmaking in R with Choroplethr last December I received an interesting email from Dr. Herb Wilson, a biologist at Colby College. Herb studies the Red-breasted Nuthatch, which live throughout the United States and Canada. He asked if it was possible to use choroplethr to map the ...

In addition to their more common uses, networks  can be used as powerful multivariate data visualizations and exploration tools. Networks not only provide mathematical representations of data but are also one of the few data visualization methods capable of easily displaying multivariate variable relationships. The process of network mapping involves ...

This semester, I am managing an undergraduate on our research team. She has a basic engineering statistics background with a little experience doing analysis in Excel and understands some basic programming concepts. For her project with our group, she will have to learn R. I tried to compile a list ...

A few days ago, I did mention on Twitter a nice graph, with Mortality by Weekday and Age https://t.co/LyzQ7nJABZ very interesting difference, young vs. old pic.twitter.com/EfrX0C1GBS — Arthur Charpentier (@freakonometrics) 27 février 2016 My colleague Jean-Philippe was extremely sceptical, so I tried to ...

The Problem As Clinical Pathologists we work hard to create laboratory developed tests (LDTs) using liquid chromatography and tandem mass spectrometry (LC-MS/MS) that are robust, repeatable, accurate and have a wider dynamic range than commercial immunoassays. In our experience, properly developed LC-MS/MS assays are much less expensive and ...