java - Google GeoCode Co-ordinate vary over a period of time -


i had geocoded around 40k address 3 months ago using google geocode api. http://maps.googleapis.com/maps/api/geocode/json

due limitation on number of requests per day had processed 2500 records every day. out of 40k records 10k records processed location type approximate.

but today if process same 10k records again location type changed rooftop different lat , long.

there no changes in records had ‘rooftop’ , range_interpolated i.e. if process rooftop record – there no change in lat, long , location type.

couldn't understand why there change in approximate location type records.

please guide me.

thanks, indy

  1. it's not allowed store these data more 30 calendar days (https://developers.google.com/maps/terms#section_10_1_3)
  2. approximate means approximate , it's fine when results become more precise

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