get latitude and longitude from a photo

get latitude and longitude from a photo

#!/usr/bin/ruby

# get latitude and longitude from a photo
# known to work with iphone photots

require 'rubygems'
require 'exifr'

x = EXIFR::JPEG.new(ARGV[0])

lat = x.gps_latitude
lon = x.gps_longitude

unless lat.nil? or lon.nil?
  lat = lat[0] + lat[1] / 60.0 + lat[2] / 3600.0
  lon = lon[0] + lon[1] / 60.0 + lon[2] / 3600.0

  lat *= -1 if x.gps_longitude_ref == 'S'
  lon *= -1 if x.gps_longitude_ref == 'W'

  puts "http://maps.google.com/maps?q=#{lat},#{lon}"
end