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Postal Addresses and Postcodes• Every dwelling and office is a potential destinationfor mail• Dwellings and offices are arrayed along streets, andnumbered accordingly• Streets have names that are unique within local areas• Local areas have names that are unique within largerregions• If these assumptions are true, then a postal address isa useful georeference
Postcodes as Georeferences• Defined in many countries– E.g. ZIP codes in the US• Hierarchically structured– The first few characters define large areas– Subsequent characters designate smaller areas– Coarser spatial resolution than postal address• Useful for mapping
Page 2: Uniqueness• A georeference may be
Page 5 and 6: ProcessReal WorldReference Ellipsoi
Page 7 and 8: Reference EllipsoidThe diameter of
Page 9 and 10: Ellipsodal and Datum• The referen
Page 11 and 12: Common Datums• WGS84 - World Geod
Page 13 and 14: Geographic: Latitude and Longitude
Page 15 and 16: Latitude and the Ellipsoid• Latit
Page 17 and 18: Latitude - change in the y directio
Page 19 and 20: Classification of Projections• Fa
Page 21 and 22: Conic Projections• Conceptualized
Page 23 and 24: Multiple Projections Centered on th
Page 25 and 26: Zones are each six degrees of longi
Page 27 and 28: UTM Zones in the U.S.Zone numbers p
Page 29: State Plane Coordinates• Defined
Page 33 and 34: Township, Range, SectionTownships a
Page 35: Other ways to GeoreferencePlace Nam
Page 39 and 40: ZIP d b d i i t tZIP code boundarie
Page 41: Users of Linear Referencing• Tran

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