The R Function Reference is a mind map that I've created to help novice and intermediate R users perform common tasks and analyses.
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R Function Reference
mapping the Australian election (2010 edition)
The AEC makes this reasonably easy, as do the authors of some very helpful R packages, the good people at Google Maps etc. Full description here (PDF); entire collection here; a sample here, showing Green 1st preferences, by polling places across metro...
EmEditor Professional as an R script editor
R is not supported "out of the box" by EmEditor, so here's a few tips I've found for using it as a great editor for R.
- Code Syntax highlighting
- Executing R scripts and capturing output
- Use ctags symbols to navigate files.
- If you create packages for CRAN or like neat code, you might like to use a macro to tidy it...
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 boundaries or a coastline. This tutorial will outline how to create
Writing a Spatial Function: The Location Quotient
Background: In some cases it is necessary to conduct the same analysis multiple times on either the same or different data. In such circumstances it is worth writing a function to simplify the code. In this example the location quotient provides a simple calculation easily written in to a function. The location quotient (LQ) is
Canterbury Earthquakes part II
Since posting last night, there's been several more aftershocks, including several big ones. The total now stands (at 7:00pm) at 304 aftershocks, 70 greater than 4 on the Richter scale, 29 greater than 4.5, and 10 greater than 5. A couple of the fives ...
Canterbury Earthquakes part II
Since posting last night, there's been several more aftershocks, including several big ones. The total now stands (at 7:00pm) at 304 aftershocks, 70 greater than 4 on the Richter scale, 29 greater than 4.5, and 10 greater than 5. A couple of the fives ...
R Maps
This is an updated version of my Making Maps with R tutorial. I think the code is lot simpler and it also includes some data for you to play around with. Background: Spatial data are becoming increasingly common, as are the tools available in R to process it. Of course one of the best ways
Coastal
UPDATE: cce asked for a chart of coastal locations broken out by their SST component and their Land componement. That’s a little tricky, but once you figure out the mask logic its just addition and such.There are TWO masks: One mask contains ALL zeros, except for coast cells which are fraction of LAND.The other mask 
Mapping Temperature Anomalies with R
In this post I show how to map NASA GISS’s 2×2 degree temperature anomaly data using R mapping tools. Rather than rely on a single value to reflect monthly global temperature anomaly, this map shows the anomalies in each of … Conti...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
