For a recent project I had to do some mapping of addresses, but I didn’t have there lat/lons do use the Deducer and DeducerSpatial packages in R JGR. After frustrating myself trying to adapt this code from stackoverflow.com, I found a much easier way of geocoding using the dismo and XML packages in R. First 
I was recently confronted with a problem where I had to compare two very different data sets. The problem was that one data set was observed cross sectional data with dates over the course of three months and the other was weekly averages during those same three months. After a bit of research, I discovered 
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
