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Methods, apparatuses and computer program products for converting a geographical database into a map tile database

  • US 8,352,480 B2
  • Filed: 12/20/2010
  • Issued: 01/08/2013
  • Est. Priority Date: 12/20/2010
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • modifying, via a processor, a geographical database based in part on adding a plurality of items of data arranged in a plurality of fields based on analyzing one or more values corresponding to geometry information associated with each of a plurality of geographical records of the geographical database;

    determining a set of tiles, for each of the records, at a predetermined zoom level that comprises at least a portion of the geographical information of respective records;

    updating each of the records to include data associated with minimum and maximum x and y values of the tiles that correspond to the geometrical information of a corresponding record; and

    determining that the minimum and maximum x and y values define one or more rectangular blocks of map tiles.

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