The ConvertLonLatToMap method converts a set of geographic latitude/longitude coordinates to map coordinates (x-eastings, y-northings) within a NITF Community Sensor Model (CSM) spatial reference. The associated ENVIRaster's metadata must include a coordinate system string.


See the example for ENVIStandardRasterSpatialRef::ConvertLonLatToMap. The use of this method is the same except that it is for use with a NITF CSM dataset.


ENVINITFCSMRasterSpatialRef.ConvertLonLatToMap, Lon, Lat, MapX, MapY



The longitude coordinate. You can specify a scalar or a vector of longitude values; if it is a vector, the Lat argument should also be a vector with the same number of elements:

Lon = [-123.58, -134.64]
Lat = [48.23, 49.56]


The latitude coordinate


A named variable that contains the map x-coordinate


A named variable that contains the map y-coordinate



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

ENVI 5.4.1


API Version


See Also

ENVINITFCSMRasterSpatialRef::ConvertLonLatToMap, ENVIRPCRasterSpatialRef::ConvertLonLatToMap, ENVIPseudoRasterSpatialRef::ConvertLonLatToMap, ENVIStandardRasterSpatialRef::ConvertLonLatToMap