I'm putting together my presentation for useR! 2011 titled "Experimenting with a tty connection for R". Hence, I've updated the tty connection patch to work with R versions 2.13.0 and 2.13.1. And, instead of re-listing the patch files and re-writing instructions on their application, I've devoted a small portion of my Code page for this
In an earlier post I discussed how you might approach producing Manhattan plots in R using ggplot2. Several readers had questions about the code samples in the post, and asked if I could post the complete code. I didn't think that would be very helpfu...
In an earlier post I discussed how you might approach producing Manhattan plots in R using ggplot2. Several readers had questions about the code samples in the post, and asked if I could post the complete code. I didn’t think … Continue reading →
Labor market tightness is defined as the vacancies or job openings rate divided by the unemployment rate. The theory goes that as job openings increase relative to the unemployment rate a tightness is created in that workers get the upper hand in...
Something I have been doing a lot of work with recently are time series data, to which I have been fitting additive models to describe trends and other features of the data. When modelling temporally dependent data, we often need … Continue reading →
R reminds me a lot of English. It’s easy to get started, but very difficult to master. So for all those times I’ve spent… well, forever… trying to figure out the “R way” of doing something, I’m glad to share these quick wins. My recent R tutorial on mining Twitter for consumer sentiment wouldn’t have 
While high-speed fish feeding videos may be the signature of the lab, dig a bit deeper and you’ll find a wealth of comparative phylogenetic methods sneaking in. It’s a natural union — expert functional morphology is the key to good comparative methods, just as phylogenies hold the key to untangling the evolutionary origins of that
If you are investigating the change of CO2 emissions, then you might ask: Where do the changes occur? Well here is the answer.
The staircase plots show the contributing factors to CO2 emissions for each continent. population refers to population effects, gdp_pcap refers to income per capita, energy_intensity refers to energy used per dollar added value, and carbon intensity...
I gave a talk at the Interface Symposium on reproducible research in practice. I went first in the session, so the slides have a bit more background and philosophy. It was a great session; one of Jon Claerbout's colleagues spoke, Sergey Fomel, a founding author of Madagascar; Sorin Mitran from UNC Chapel Hill talked about
A few days ago I heard a talk about Simpson's paradox, and I decided to write a little example in R:library(MASS) # For multivariate normals# List of (vectors of) meansmu <- list(c(5, 175), c(6.25, 110))# List of covariance matricessigma ...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
