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jridgewell/mapReduce.rb

Last active December 18, 2015 16:09
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mapReduce geoSpacial in Mongo
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mapReduce.rb
require 'mongo_mapper'
map = %Q(function() {
lat_long = Math.floor(this.lat) + Math.floor(this.lon);
emit(lat_long, this.id);
})
reduce = %Q(function(id, values) {
return vals;
})
output_collection = "database.1by1"
collection.map_reduce(map, reduce, :out => output_collection).find()
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