Portfolio
Web scraping with R
Web Scraping with rvest, httr and jsonlite packages.
GLMM FAQ
an informal GLMM FAQ list for the r-sig-mixed-models mailing list
Parallel programming
Running large tasks in parallel in R: Power and Sample size Simulation with parallel package.
sample size calculation for GLMM model with a log link
A simple guide for sample size and power calculation, with a poisson distribution as a case study.
data munging with data.table
A quick glimpse into data.table for data manipulation.