Code examples — MapReduce on Amazon and colored country maps

Posts with working code examples rock:

* Using Elastic MapReduce to access SimpleDB on Amazon Web Services.
This uses the boto Python library to access the database and a
Ruby client, configured with JSON to run the example on Hadoop:

http://atbrox.com/2009/11/11/how-to-combine-elastic-mapreducehadoop-with-othe…

* Making choropleth maps: plotting out maps with metrics organized
by state or region. This is a useful tactic to apply to any sort
of spatially oriented data. Flowing Data has a python example:

http://flowingdata.com/2009/11/12/how-to-make-a-us-county-thematic-map-using-…

and folks at Revolutions take up the challenge in R:

http://blog.revolution-computing.com/2009/11/choropleth-map-r-challenge.html

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