Gelman's MrP in R - What is this all about?

A simple example here.

Harvard WorldMap

Useful spatial resources at Harvard.

The China Biographical Database

This project provides iographical information about approximately 360,000 individuals as of April 2015, primarily from the 7th through 19th centuries in China. Very ambitious project and is freely available to the academic community!

Regular expressions using R

Regularity is the best R regular expressions library so far. I particularly like its intensive use of the pipe operator, which makes the otherwise obscure process easy and transparent.