The ConvertMapToMap method converts a set of map coordinates (x-eastings, y-northings) in a standard spatial reference to the same location in another standard spatial reference. This method requires two coordinate systems.
Syntax
ENVIStandardRasterSpatialRef.ConvertMapToMap, Map1X, Map1Y, Map2X, Map2Y, SpatialRef2
Arguments
Map1X
The map x-coordinate (easting) in the first spatial reference. You can specify a scalar or a vector of Map1X values; if it is a vector, the Map1Y argument should also be a vector with the same number of elements:
Map1X = [481874.4000D, 482260.8000D]
Map1Y = [4428160.8000D, 4427992.8000D]
Map1Y
The map y-coordinate (northing) in the first spatial reference
Map2X
A named variable that will contain the map x-coordinate in the second spatial reference
Map2Y
A named variable that will contain the map y-coordinate in the second spatial reference
SpatialRef2
A reference to an ENVIStandardRasterSpatialRef object that is in a different spatial reference
Keywords
ERROR
Set this keyword to a named variable that will contain any error message issued during execution of this routine. If no error occurs, the ERROR variable will be set to a null string (''). If an error occurs and the routine is a function, then the function result will be undefined.
When this keyword is not set and an error occurs, ENVI returns to the caller and execution halts. In this case, the error message is contained within !ERROR_STATE and can be caught using IDL's CATCH routine. See IDL Help for more information on !ERROR_STATE and CATCH.
See Manage Errors for more information on error handling in ENVI programming.
Version History
API Version
4.3
See Also
ENVIStandardRasterSpatialRef, ENVIPseudoRasterSpatialRef::ConvertMapToMap, ENVIRPCRasterSpatialRef::ConvertMapToMap