[Gdal-dev] OGRCreateCoordinateTransformation

[Cho Hyun-Kee]

Hello!

I use GDAL Library for coordinate transformation.
But whenever I use OGRCreateCoordinateTransformation function, it returns 
NULL value.

The code is like tihs.  

OGRSpatialReference OSRInputCoordinateInform;
OGRSpatialReference OSROutputCoordinateInform;

	
OSRInputCoordinateInform.SetTM(38, 127, 0.9996, 100000, 200000);
OSRInputCoordinateInform.importFromEPSG(4162);

OSROutputCoordinateInform.SetUTM(52, TRUE);
OSROutputCoordinateInform.importFromEPSG(4166);

OGRCoordinateTransformation *poCoordinateTransform;
poCoordinateTransform = 
OGRCreateCoordinateTransformation(&OSRInputCoordinateInform, 
&OSROutputCoordinateInform); // return NULL

How can I use it??