topic How to merge multiple polylines in java? in ArcObjects SDK Questions

How to merge multiple polylines in java?

KMahesh — Mon, 11 Apr 2016 10:29:53 GMT

IPolyline newPolyline = (IPolyline) polylineList.get(0).getShape();

ITopologicalOperator2 topoOperator = (ITopologicalOperator2) newPolyline;

//int lengthindex = pFields.findField("SHAPE_Leng");

for (int i = 1; i < polylineList.size(); i++){

//Polyline line=(Polyline) topoOperator.union(polylineList.get(i).getShape());

newPolyline = (IPolyline) topoOperator.union(polylineList.get(i).getShape());

double value = newPolyline.getLength();

polylineList.get(0).setShapeByRef(newPolyline);

// polylineList.get(0).setValue(lengthindex, value);

polylineList.get(0).store();

polylineList.get(i).delete();

}

KMahesh — Mon, 11 Apr 2016 10:31:37 GMT

By using the above code we are able to merge two polylines but it's not working for more than two polylines.Can anyone suggest.

WeifengHe — Tue, 12 Apr 2016 23:34:36 GMT

For multiple polylines, please use ITopologicalOperator::ConstructUnion method