couchdb-reduce-example
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uses reduce to calculate standard deviation across sensor readings
This is a programmitic answer to the question "what is CouchDB's reduce good for?"
For more details on the original question, see here:
http://tinyurl.com/reduce-std-dev
To run the example, you'll need the CouchRest gem installed
sudo gem install jchris-couchrest -s http://gems.github.com
then run these two commands in the root directory of this project:
ruby import.rb readings.txt ruby query.rb