Determines if another percentage polygon overlap has occurred, returning the polygon and the percentage overlap with the input polygon.
Syntax
05 GDL-FIND-NEXT-POLYGON-OVR-PCT.
10 GDL-FNPOP-HANDLE PIC S9(09) BINARY.
10 GDL-FNPOP-OUTPUT-SHAPE PIC S9(09) BINARY.
10 GDL-FNPOP-OVERLAP COMP-2.
*
CALL "GDLFNPOP"
USING GDL-FIND-NEXT-POLYGON-OVR-PCT GDL-RETURN-CODE.Arguments
GDL-FNPOP-HANDLE
The gdlFileHandle returned by GDLSOF (GDL-OSF- STATIAL-HANDLE). Input.
GDL-FNPOP-OUTPUT-SHAPE
A pointer to the overlapping polygon. Output.
GDL-FNPOP-OVERLAP
The percentage of overlap. Output.
Return Values
| GDL-OK | Success |
| GDL-ERROR | An internal error occurred |
| GDL-NOT-FOUND | No further returns are available |
Prerequisites
GDLFPOP
Alternates
GDLFNPO - For better performance when percent overlap is not needed.
Notes
The percentage overlap determines the confidence rating.
Following instances of this procedure, you should call GDLSF with the output polygon when you are finished using the output polygon to release system resources.