Inverse of Coordinate Transformation.
| call | DclGrid2DInverseCoordinateTransform | (tx,ty,ux,uy) |
| tx | <R> | Source Coordinates.(No 1).(Input)． |
| ty | <R> | Source Coordinates.(No 2).(Input) |
| ux | <R> | Destination Coordinates.(No 1).(Output) |
| uy | <R> | Destination Coordinates.(No 2).(Output) |
(a) If it has not been initialized with G2SCTR, an error occurs.
(b) If inputs out of range of TXA,TYA which is set with G2SCTR, an error occurs.