Tutorial

3 posts

• Using R and lme/lmer to fit different two- and three-level longitudinal models

  Apr 21, 2015 · 17 min read · R

  I often get asked about how to fit different longitudinal models in lme/lmer. In this post I cover several different two-level, three-level and partially nested models.

• An R Script to Automatically download PubMed Citation Counts By Year of publication

  Apr 19, 2012 · 6 min read · R

  An R script that queries PubMed’s E-utilities for the number of publications per year matching a search term, and plots the trends with ggplot2.

• How to work with Google n-gram data sets in R using MySQL

  Apr 12, 2012 · 5 min read · R

  In this R tutorial I show how to work with Google n-gram data sets with the help of MySQL and R. The complete R code is included in this post