Interface

ISpatialReference

The measurement units used to define the angles of a spheroid or ellipse associated with a specific datum. The datum is usually WGS (World Geodetic System) 1984 and the unit of measurement is a degree.

Declaration

double AngularUnitOfMeasurement { get; set; }

Property Value

The authority body that defines the standards for the spatial reference parameters. Spatial Reference is usually WGS 1984 and the authority is EPSG:4326.

Declaration

string Authority { get; set; }

Property Value

The line of longitude at the center of a map projection generally used as the basis for constructing the projection.

Declaration

double CentralMeridian { get; set; }

Property Value

This indicates the horizontal datum, which corresponds to the procedure used to measure positions on the surface of the Earth.

Declaration

string Datum { get; set; }

Property Value

This indicates the horizontal datum, which corresponds to the procedure used to measure positions on the surface of the Earth.

Declaration

string DatumAuthority { get; set; }

Property Value

The value added to all "x" values in the rectangular coordinate for a map projection. This value frequently is assigned to eliminate negative numbers. Expressed in the unit of measure identified in Planar Coordinate Units.

Declaration

double FalseEasting { get; set; }

Property Value

The value added to all "y" values in the rectangular coordinates for a map projection. This value frequently is assigned to eliminate negative numbers. Expressed in the unit of measure identified in Planar Coordinate Units.

Declaration

double FalseNorthing { get; set; }

Property Value

A coordinate system based on latitude and longitude. Some geographic coordinate systems are Latitude/Longitude, and some are Longitude/Latitude. You can find out which this is by examining the axes. You should also check the angular units, since not all geographic coordinate systems use degrees.

Declaration

string GeoGcs { get; set; }

Property Value

The latitude chosen as the origin of rectangular coordinate for a map projection.

Declaration

double LatitudeOfOrigin { get; set; }

Property Value

The maximum Latitude this tile source supports.

Declaration

double MaxLatitude { get; set; }

Property Value

The maximum Longitude this tile source supports.

Declaration

double MaxLongitude { get; set; }

Property Value

The minimum Latitude this tile source supports.

Declaration

double MinLatitude { get; set; }

Property Value

The minimum Longitude this tile source supports.

Declaration

double MinLongitude { get; set; }

Property Value

This defines the meridian used to take longitude measurements from. The units of the longitude must be inferred from the context.

Declaration

double Primem { get; set; }

Property Value

This defines the meridian used to take longitude measurements from. The units of the longitude must be inferred from the context.

Declaration

string PrimemAuthority { get; set; }

Property Value

This describes a projection from geographic coordinates to projected coordinates.

Declaration

string ProjectionAuthority { get; set; }

Property Value

This describes a spheroid, which is an approximation of the Earth's surface as a squashed sphere.

Declaration

string SpheroidAuthority { get; set; }

Property Value

This describes a spheroid, which is an approximation of the Earth's surface as a squashed sphere.

Declaration

double SpheroidFlattening { get; set; }

Property Value

This describes a spheroid, which is an approximation of the Earth's surface as a squashed sphere.

Declaration

double SpheroidRadius { get; set; }

Property Value

The line of constant latitude at which the surface of the Earth and the plane or developable surface intersect.

Declaration

double StandardParallel { get; set; }

Property Value

The authority body that defines the unit of measurement i.e. European Petroleum Survey Group (EPSG). The unit of measurement is usually degrees and the authority for the datum the map uses, WGS 1984 is EPSG:4326.

Declaration

string UnitAuthority { get; set; }

Property Value

Converts a geographical coordinate (Longitude, Latitude) to a logical Point (0->1).

Declaration

PointG GeographicToLogical(PointG geographicPoint)

Parameters

Returns

Calculate size of rectangle from base point.

Declaration

SizeG GetSizeInKilometers(PointG basePoint, SizeG size)

Parameters

Returns

Calculate size of rectangle from base point.

Declaration

SizeG GetSizeInReferenceUnits(PointG basePoint, SizeG size)

Parameters

Returns

Converts a logical Point (0->1) to a geographical coordinate (Longitude, Latitude).

Declaration

PointG LogicalToGeographic(PointG logicalPoint)

Parameters

Returns