Purpose
Returns a number that indicates what percentage of one object is covered by another object. You can call this function from the MapBasic window in MapInfo Pro.
Syntax
ProportionOverlap( object1, object2 )object1 is the bottom object, and it is a closed object.
object2 is the top object, and it is a closed object.
Return Value
A float value equal to AreaOverlap( object1, object2 ) / Area( object1 ).
Restrictions
ProporationOverlap() only works on closed objects. If both objects are not closed (such as points and lines), then you may see an error message. Closed objects are objects that can produce an area, such as regions (polygons).
See Also:
AreaOverlap() function