MapProjection Methods |
The MapProjection type exposes the following members.
Name | Description | |
---|---|---|
AreIdentical |
Function that checks if two projecions are identical.
Two map projections are identical, if they have the same set of parameters. if just one of the parameters are different, then the map projections are NOT identical. | |
Equals | (Inherited from Object.) | |
Geo2Proj |
Convert coordinates from geographical coordinates to projection coordinates
| |
Geo2ProjRotation |
Convert a rotation from true north
into a rotation from map projection north
It subtracts the convergence value from the true north rotation value The convertion depends on the geographical location. | |
Geo2Xyz |
Convert coordinates from geographical coordinates and height to 3D Euclidean coordinates.
The 3D coordinate system origin is at the earth center (ellipsoid center) | |
GetConvergence |
Get the convergence (orientation towards true north) at the given geographical location.
The convergence is the angle measured clockwise from true north to the north-south gridline passing through the specified coordinate. | |
GetDefaultArea |
Function that returns the default area in map projection coordinates of the projection.
The default area is the area where the projection is ment to be used and where it is accurate. It is not recommended to use the map projection outside its default area. | |
GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) | |
GetOrigin |
Get the geographical origin of the map projection
| |
GetType | Gets the Type of the current instance. (Inherited from Object.) | |
HasDatum |
Returns true if the projectionString projection has a datum definition.
If a projection does not have an underlying datum, reprojections including datum shifts cannot be performed. | |
IsGeographical |
Returns true if the projectionString projection is a geographical projection, i.e. based
on spherical (lon, lat) coordinates
| |
IsGeoreferenced |
Returns true if the projectionString projection is georeferenced,
meaning that it is based on, or can convert to, geographical coordinates (longitude, latitude).
| |
IsLocal |
Returns true if the projectionString defines a local
coordinate system that is not georeferenced.
The projection string for a local coordinate system is the string: "NON-UTM" | |
IsLongLat |
Returns true if the projectionString projection is "LONG/LAT"
"LONG/LAT" is a geographical coordinate system without an underlying datum (ellipsoid) definition. | |
IsValid |
Returns true if the projectionString is a valid projection string
| |
Longitude2UtmZone |
Get the projection string for the UTM zone best matching the longitude coordinate
| |
Proj2Geo |
Convert coordinates from projection coordinates to geographical coordinates
| |
Proj2GeoRotation |
Convert a rotation from map projection north
into a rotation from true north.
It adds the convergence value to the projection north rotation value The convertion depends on the geographical location. | |
ProjectionOrigin |
Returns the geographical origin of the projection defined by the
projstring If the projection string is not a valid WKT string, an exception is thrown. | |
ProjectionShortName |
Get the short name out of a WKT projetion string.
The short name is not unique amongst all WKT projections If the projString is not a WKT projection string, the projString itself is returned as the short name. | |
ToString | Returns a string that represents the current object. (Inherited from Object.) | |
Xyz2Geo |
Convert coordinates from Euclidean 3D coordinates to geographical coordinates and height.
The 3D coordinate system origin is at the earth center (ellipsoid center) |