Geographical location indexing
First Claim
1. A computer-readable medium having stored thereon a geographical location index comprising a plurality of layers of geographical information concerning a geographical area, each layer comprising a division of the geographical area into a plurality of discrete zones which each have a zone identifier and associated geographical co-ordinates of one or more geographical locations contained within that zone.
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Accused Products
Abstract
A geographical location index comprising a plurality of layers of geographical information concerning a geographical area, each layer comprising a division of the geographical area into a plurality of discrete zones which each have a zone identifier and associated geographical co-ordinates of one or more geographical locations contained within that zone.
54 Citations
16 Claims
- 1. A computer-readable medium having stored thereon a geographical location index comprising a plurality of layers of geographical information concerning a geographical area, each layer comprising a division of the geographical area into a plurality of discrete zones which each have a zone identifier and associated geographical co-ordinates of one or more geographical locations contained within that zone.
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13. A method of indexing data relating to geographical locations comprising:
providing a plurality of layers of geographical information concerning a geographical area, each layer comprising a division of the geographical area into a plurality of discrete zones, each of which has a zone identifier and associated geographical co-ordinates each of which co-ordinates defines a geographical location; and
associating for each layer a geographical location with those zones containing the geographical location such that a geographical hierarchy is provided for each geographical location.
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14. A method of utilizing a geographical location index comprising a plurality of layers of geographical information concerning a geographical area, each layer comprising a division of the geographical area into a plurality of discrete zones which each have a zone identifier and associated geographical co-ordinates of one or more geographical locations contained within that zone, the method comprising searching the index for a target geographical location and determining therefrom one or more nearby geographical locations or data concerning the nearby geographical locations.
- 15. A method of analyzing the content of a body of information with reference to a geographical location index comprising a plurality of layers of geographical information concerning a geographical area, each layer comprising a division of the geographical area into a plurality of discrete zones which each have a zone identifier and associated geographical co-ordinates of one or more geographical locations contained within that zone, to determine whether geographical locations named in the body of information fall into a predetermined set of zones.
Specification