Take the 2-minute tour ×
Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It's 100% free, no registration required.

I don't recall every having an issue with this method, but I am now. As I understand IRelationalOperator.Equals, vertex orientation shouldn't affect equality and if I take a polyline and reverse orientation, IRelationalOperator.Equals should still return true.

However, I am not usually seeing this: IRelationalOperator.Equals usually returns false although occasionally it will return true after a ReverseOrientation() (very strange--I'm seeing this maybe 1 out of 20 calls).

Is my understanding of this method correct? If so, is this a bug or is there something wrong with my implementation?

IPolyline polyline1; 
IPolyline polyline2; 

//...other code

polyline2.ReverseOrientation();
IRelationalOperator relop = polyline1 as IRelationalOperator;
Trace.WriteLine(relop.Equals(polyline2 as IGeometry));
share|improve this question
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.