Detailed Description

This class encapsulates the description of the set of parameters that are used to initialise a map projection or linear transform.

Objects of this type are returned by the TSLCoordinateSystem query methods.

Clients are not able to directly create objects of this type.

The following is a list of the parameter names and their meanings:

Linear Transform:

"Delta X": The pre/post translation along X (map units). "Delta Y": The pre/post translation along Y (map units). "Delta Z": Unused. "Scale X": The scale factor in the X direction. "Scale Y": The scale factor in the Y direction. "Scale Z": Unused. "Rotation Angle": The rotation angle (degrees).

Map Projection:

"Latitude": The latitude (degrees). "Longitude": The longitude (degrees). "Scale": The scale factor. "Standard Parallel": The standard parallel (degrees). "1st Standard Parallel": The first standard parallel (degrees). "2nd Standard Parallel": The second standard parallel (degrees). "Reference Point 1: Latitude": The latitude (degrees) of the first reference point of the central line of a map. "Reference Point 1: Longitude": The longitude (degrees) of the first reference point of the central line of a map. "Reference Point 2: Latitude": The latitude (degrees) of the second reference point of the central line of a map. "Reference Point 2: Longitude": The longitude (degrees) of the second reference point of the central line of a map. "Central Point: Latitude": The latitude (degrees) of the central point of the map. "Central Point: Longitude": The longitude (degrees) of the central point of the map. "Azimuth": The azimuth (degrees East of North) of the central point of the map. "RectifiedToSkewAngle": The angle from the rectified grid to the skew (oblique) grid.

Public Member Functions
const char *	name (int N) const

int	size () const

double	value (int N) const

Member Function Documentation

◆ name()

const char * TSLTransformTraits::name ( int N ) const

Returns the name of the Nth parameter.

The name returned is in static memory and so should not be deleted by the user.

Parameters

N	The index of the required parameter.

◆ size()

int TSLTransformTraits::size ( ) const

Returns the number of parameters in the set.

◆ value()

double TSLTransformTraits::value ( int N ) const

Returns the value of the Nth parameter.