topic Re: Check for self-intersecting polyline in ArcGIS JavaScript Maps SDK Questions

Check for self-intersecting polyline

AlexPleyer — Wed, 29 Nov 2017 10:05:40 GMT

Hi,

I want to do something very simple with the ArcGIS Javascript API 3.x. Just check if a polyline is self-intersecting.

Is there anything else than getLineIntersection() or the GeometryService function Intersect() because both require me to iterate through the paths arrays and check each line part myself.

Re: Check for self-intersecting polyline

RobertScheitlin__GISP — Wed, 29 Nov 2017 13:53:16 GMT

Alex,

Have you tried GeometryEngine.isSimple method it should return false if the polyline self-intersects.

Re: Check for self-intersecting polyline

AlexPleyer — Wed, 29 Nov 2017 14:59:08 GMT

Hi Robert,

yes I tried that, it always returns true, regardless of self-intersection or not.

Re: Check for self-intersecting polyline

RobertScheitlin__GISP — Wed, 29 Nov 2017 15:02:00 GMT

Alex,

Then, No there is no other way.

Re: Check for self-intersecting polyline

AlexPleyer — Wed, 29 Nov 2017 15:05:31 GMT

Ok thank you for your help. Doing it manually now.