A Crash Course in R

This code has been kindly contributed by Robin Edwards (from UCL CASA). There are many useful introductory guides out there to R, but below is the kind of thing I now wish I’d been given when I first started using it – something with simple log...


Handling Spatial Data with R

Spatial data are becoming increasingly common, as are the tools available in R to process it. It takes a little time to understand how R handles spatial data; this tutorial is designed to help get people started. It outlines how to create a simple sp...


Clipping a Surface By a Polygon

Background: A common function in standard GIS software enables users to create a raster surface and extract values or clip it based on a set of polygons. This may be used in cases where you want analysis to be constrained to within a town’s bou...