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Polygon To Polyline Advanced Wizard

Converts the polygon boundaries to polylines.

• Creates a topologically correct (nodes at intersections, no overlaps) Polyline feature class
• For each polyline the left and right polygon attributes are added.
• Optionally the labels of the polygons are exported as points. The point attribute table contains all original attributes.

Inputs:

• A polygon feature layer
• Link Field - the values of this field will be saved as Left and Right polygons for each polyline
• Fuzzy tolerance - will be used to clean the polygon boundaries

Outputs:

• New topologically correct Polyline feature class. Fields added to the polyline attribute table
  • [ET_Left] - stores the Left polygon link values
  • [ET_Right] - stores the Right polygon link values
• Optional Point feature class representing the labels of the input polygons. The attributes of the input polygons are preserved in the Point Attribute Table

Notes :

• The default Fuzzy tolerance is calculated from the extents of the input layer using the formulae (W + H) / 2000000 where W and H are the with and height of the extent envelope.
• Larger values of the Fuzzy tolerance may be used to clean some bigger Gaps and Slivers, but it might lead to unwanted approximation of the input shapes. 
• A Fuzzy tolerance of  0 will be replaced by the default value
• If a polyline does not have Left polygon, the value of the ET_Left field will be set to -999999999. In topologically correct polygon dataset this should indicate the outer boundary (neighboring with the so-called Universal Polygon. Values of -999999999 in the interior of the polygon dataset will indicate gaps or overlaps in the data.
• If the input feature class has multi-part features and the Object ID field is used as a link field, the polylines will have for Left and Right polygons the IDs of the original polygons. The label points however will carry in the ET_ID field the IDs of the exploded polygons.

Example:

	Original polygons
	Derived polylines. Nodes in intersections No duplicates The polylines on the boundary of the area will have ET_Left = -999999999
	Polylines labeled with their Left and Right polygons. Polygons labeled with the Link field used in the function.
	Multi-part polygons. Object ID used in the function as a link field.