System and method for storing geographic data on a physical storage medium

摘要: An improved method and system for storage of geographic data on physical media. The are stored in a manner that facilitates enhances use access the by various navigation application functions systems data. includes parcelization separates into parcels having less than or equal to maximum parcel size but at least desired fill percentage. also provides division arrangement addressing identification parcels. According further aspect, special nodal entities used collapse complex intersections, such as roundabouts, cloverleaves, divided highways, simpler representations. associated with road segment route calculation program place regular node entities. Further, include normalized attribute array reoccurring combinations certain selected attributes Indices included corresponding attributes. When requests data, an entry table pointed index is return requested particular combination from array. compiled medium. compilation method, files be medium organized records within identified which they located. all determined related assigned each parcel. Cross references between updated identifications