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Target layer: Polyline

Description:  Drag a selection box. All  selected polylines will be analyzed and the exact duplicates removed. Fuzzy tolerance is used to compare the polylines 

Advantages: 

• Quick and simple way of removing duplicate polylines. 
• Together with "Copy Features from Other Layer Tool" & "Intersect Polylines Tool" allows easy conversion of polygons to topologically correct polylines. See example below.

Hot Keys (Pressing these keys when the tool is active will allow changing  the parameters used by the function): 

• "S" - introduces a dialog for adjusting the Fuzzy Tolerance

Note: Switch ON the Draw Duplicates tool to identify duplicate polylines

Original polygons	Polygons copied to the polyline layer	After Intersect Polylines	Draw Duplicates switched ON	After Clean Duplicates
	Polygons are converted to closed polylines	Nodes introduced at each intersection	The red lines indicate duplicates

Copyright © Ianko Tchoukanski