test driving Amazon Web Services’ Elastic MapReduce

Hadoop provides software infrastructure for running MapReduce tasks, but it requires substantial setup time and availability of a compute cluster to take full advantage of. Amazon’s Elastic MapReduce (EMR) solves these problems; delivering pre-configured Hadoop virtual machines running on the cloud for only the time they are required, and billing only for the computation minutes […]

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church to bar ratio in the lower 48, by county

Calculated the church to bar ratio by county from US Census Bureau data: The color partitions were derived from the log-transformed ratio distribution to facilitate visual clarity. Method From the 2009 County Business Patterns data published at http://www.census.gov/econ/cbp/download/index.htm, extracted the number of establishments in each county that have NAICS codes 813110 (places of worship including […]

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