Group User Definations

 

 

The group "User Definitions" contains functions for the input of the parameters of self defined Coordinate Systems, geodetic Reference Systems and earth ellipsoids which can be used with the functions of the group "Coordinate Transformations" besides the predefined GeoDLL systems.

 

Characteristics of the function group

•Custom coordinate systems for many projections
o16 possible projection types
oOrthogonal Output Device Projection (Pixel calculation)
•Custom reference systems
oCoordinate Frame Rotation (Seven parameters, Helmert)
oPosition Vector Transformation (Seven parameters, Bursa-Wolf)
oEuropean Standard (Seven parameters, ISO 19111)
oMolodensky (Three parameters)
•Custom earth ellipsoids
oSemi major and minor axes
oFlattening

 

"User definitions" function group

Function setusercoordsys1() - Setup of a user defined Coordinate System

Function setusercoordsys2() - Setup of a 2nd user defined Coordinate System

Function setuserrefsys() - Setup of a user defined Reference System

Function setuserellsource() - Setup of a user defined source ellipsoid

Function setuserelltarget() - Setup of a user defined target ellipsoid

Function getusercoordpar() - Get parameter names of a user defined Coordinate System

Function getusercoordtyp() - Get type name of a user defined Coordinate System