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- State_Plane_Coordinate_System abstract "The State Plane Coordinate System (SPS or SPCS) is a set of 124 geographic zones or coordinate systems designed for specific regions of the United States. Each state contains one or more state plane zones, the boundaries of which usually follow county lines. There are 110 zones in the continental US, with 10 more in Alaska, 5 in Hawaii, and one for Puerto Rico and US Virgin Islands. The system is widely used for geographic data by state and local governments. Its popularity is due to at least two factors. First, it uses a simple Cartesian coordinate system to specify locations rather than a more complex spherical coordinate system (the geographic coordinate system of latitude and longitude). By thus ignoring the curvature of the Earth, "plane surveying" methods can be used, speeding up and simplifying calculations. Second, the system is highly accurate within each zone (error less than 1:10,000). Outside a specific state plane zone accuracy rapidly declines, thus the system is not useful for regional or national mapping.Most state plane zones are based on either a transverse Mercator projection or a Lambert conformal conic projection. The choice between the two map projections is based on the shape of the state and its zones. States that are long in the east-west direction are typically divided into zones that are also long east-west. These zones use the Lambert conformal conic projection, because it is good at maintaining accuracy along an east-west axis (explain why, reference needed). Zones that are long in the north-south direction use the Transverse Mercator projection because it is better at maintaining accuracy along a north-south axis (explain why, reference needed). The panhandle of Alaska, whose maximum dimension is on a diagonal, uses an Oblique Mercator projection, which minimizes the combined error in the X and Y directions.".
- State_Plane_Coordinate_System wikiPageExternalLink StatePlane.aspx.
- State_Plane_Coordinate_System wikiPageExternalLink www.ngs.noaa.gov.
- State_Plane_Coordinate_System wikiPageExternalLink ManualNOSNGS5.pdf.
- State_Plane_Coordinate_System wikiPageExternalLink spcs.html.
- State_Plane_Coordinate_System wikiPageID "7654445".
- State_Plane_Coordinate_System wikiPageRevisionID "598120318".
- State_Plane_Coordinate_System hasPhotoCollection State_Plane_Coordinate_System.
- State_Plane_Coordinate_System subject Category:Cartography.
- State_Plane_Coordinate_System subject Category:Geographic_coordinate_systems.
- State_Plane_Coordinate_System subject Category:Land_surveying_of_the_United_States.
- State_Plane_Coordinate_System type Abstraction100002137.
- State_Plane_Coordinate_System type Arrangement105726596.
- State_Plane_Coordinate_System type Cognition100023271.
- State_Plane_Coordinate_System type CoordinateSystem105728024.
- State_Plane_Coordinate_System type GeographicCoordinateSystems.
- State_Plane_Coordinate_System type PsychologicalFeature100023100.
- State_Plane_Coordinate_System type Structure105726345.
- State_Plane_Coordinate_System comment "The State Plane Coordinate System (SPS or SPCS) is a set of 124 geographic zones or coordinate systems designed for specific regions of the United States. Each state contains one or more state plane zones, the boundaries of which usually follow county lines. There are 110 zones in the continental US, with 10 more in Alaska, 5 in Hawaii, and one for Puerto Rico and US Virgin Islands. The system is widely used for geographic data by state and local governments.".
- State_Plane_Coordinate_System label "State Plane Coordinate System".
- State_Plane_Coordinate_System sameAs m.0267zfg.
- State_Plane_Coordinate_System sameAs Q7603460.
- State_Plane_Coordinate_System sameAs Q7603460.
- State_Plane_Coordinate_System sameAs State_Plane_Coordinate_System.
- State_Plane_Coordinate_System wasDerivedFrom State_Plane_Coordinate_System?oldid=598120318.
- State_Plane_Coordinate_System isPrimaryTopicOf State_Plane_Coordinate_System.