Parse tweets from baltimore.twittervision.com

tweetparse.rb

require 'rubygems'
require 'yajl'
require 'fastercsv'

tweetfile = ARGV[0]

PARSER = Yajl::Parser.new

def output_tweet(s)
  if s['geo']
    lat = s['geo']['coordinates'][0]
    lon = s['geo']['coordinates'][1]
  elsif s['coordinates']
    lat = s['coordinates']['coordinates'][1]
    lon = s['coordinates']['coordinates'][0]
  end
  return unless lat && lon
  csv_tweet = [s['user']['screen_name'],s['text'],lat,lon].to_csv
  puts csv_tweet
end

PARSER.on_parse_complete = method(:output_tweet)
PARSER.parse(File.read(tweetfile))