One of these days I am going to finish my series on problems with how NHST is issued in the social sciences. Until then, I came up with a cheap criticism of p-values today. To make sense of my complaint, you’ll want to head over to Andy Gelman’s ... [Read more...]

  hSDM: hierarchical Bayesian species distribution models Ghislain Vieilledent, Andrew M. Latimer, Alan E. Gelfand, Cory Merow, Adam M. Wilson, Frederic Mortier and John A. Silander Jr hSDM is an R package for estimating parameters of hierarchic... [Read more...]

A simpler approach to producing the variability. Previously The post “Variability in long-short decile strategy tests” proposed a way of assessing the variability of strategy tests in which a long-short portfolio is created by equally weighting the top and bottom deciles. Improved idea Joe Mezrich suggests maintaining equal weights but ... [Read more...]

We’ve previously covered the convex hull here at is.R(), and in that post I admitted that I was somewhat hard-pressed to come up with a common use-case — at least for Political Science applications. Well, today’s Gist illustrates the... [Read more...]

Check out the application on Glimmer!  http://glimmer.rstudio.com/qbrc/grn/   We’ve been experimenting with RStudio’s new Shiny software as a way to quickly and easily create interactive, responsive web applications which are able to leverage complicated analytics back-ends built in the R programming language. We created ... [Read more...]

UPDATE: there were some errors in the tests for taxize, so the binaries aren't avaiable yet. You can install from source though, see below. Getting taxonomic information for the set of species you are studying can be a pain in the ass. You have to manually type, or paste in, ... [Read more...]

So I tidied the code up a bit from last time; no more for loop. Actually, I tidied it up a lot. My goal had been to arrange the data in such a way that I could get a simple moving average of the score difference for each team. That ... [Read more...]

I found wp-codebox could highlight R code two years ago. This plugin is based on GeSHi to highlight source code internally. Now there are many ways to highlight R syntax in the website. Pretty-R provided by Inside-R is a popular tool in the community. Read More: 633 Words Totally [Read more...]

During 2007 and 2008 the Mexican state of Sinaloa had more drug war-related homicides than total homicides. This should in theory be impossible since drug war homicides are a subset of total homicides. How did this happen? Here is a chart from my old post highlighting the monthly difference between the vital ... [Read more...]

Today I want to highlight the TFX Package created by Garrett See. TFX is an R Interface to the TrueFX(tm) Web API for free streaming real-time and historical tick-by-tick market data for dealable interbank foreign exchange rates with millisecond detail. Garrett provided a great tutorial, examples, and shiny application ... [Read more...]

The new maintenance release 0.2.10 of RInside is now on CRAN, including Windows binaries. RInside provides a set of convenience classes which facilitate embedding of R inside of C++ applications and programs, using the classes and functions provided ... [Read more...]

The shiny package, the R package from RStudio that makes it easy to build simple interactive interfaces for R scripts, is now available on CRAN. This will make it easier for R programmers to install and use shiny, and to run the interfaces they create from a local web browser. ... [Read more...]

Far as I remember, today was the first day in my life I succeed to load a text file bigger than 1.5 Gb into R (~ 5 million lines and 18 columns). My computer is not a small stuff, I’m using a Macbook Pro with rough 8GB of RAM, but the issue why ... [Read more...]

I have been forever annoyed at how long it takes to plot data on a large shapefile. And this is a domain where doesn’t matter if you’re working with MapInfo or R. Just zooming the figure takes ages. But a … Continue reading → [Read more...]

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Did you notice that the file generated from write.table() in R has missed a tab (\t) in the top-left corner, when row.names=T (by default)?I found the solution here:http://stackoverflow.com/questions/2478352/write-table-in-r-screws-up-header-when-has-r... [Read more...]

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Summary: Two methods of inferring (effective) population dynamics from genetic variation are compared: (i) Markov chain Monte Carlo (MCMC; using BEAST); and (ii) integrated nested Laplace approximation (INLA; using R interface of that name). INLA runs __1000 times faster than … Continue reading → [Read more...]

I’ve been writing lately on what to do when people who make decisions in an organization say they want data-driven capabilities but then ignore or attack the results of data-driven analysis for not saying what they think the data ought to say. Some of the most productive things you ... [Read more...]

Oftentimes you might be writing in LaTeX and trying to push your results from R into your .tex file. This, at times, can be very frustrating. Luckily, there’s apsrtable, an R package that automatically produces the LaTeX code for your  R model ... [Read more...]