Cleans up feature geometries by forming a 2D planar partition with no gaps or overlaps between polygons.
The transformer creates a triangulation of input polygons and donuts and assigns each overlapping region or gap region to one of the adjacent areas.
Output Ports
Invalid
Any invalid features, such as non-area geometries, are output through this port.
Repaired
Features that have been cleaned up are output through this port.
Parameters
Repair Method
Longest Boundary: The polygon with the longest border length to the conflict will be chosen.
Random: The polygon to merge a conflicting region into will be selected at random.
Priority (Edge Preserving): Allows control of the priority of individual polygons in the repair process. This method is used in conjunction with the Priority Attribute parameter.
Priority (Area Enlarging): Allows control of the priority of individual polygons in the repair process. This method is used in conjunction with the Priority Attribute parameter.
Priority Attribute (Numeric)
Priority (Edge Preserving): The Priority Attribute should be a non-negative integer value, with 0 meaning highest priority. The boundary of the higher priority polygon is preserved in this mode. Gaps between polygons will be assigned to the lower priority neighboring polygon, and overlaps will be assigned to the higher priority neighboring polygon.
Priority (Area Enlarging): The Priority Attribute should be a non-negative integer value, with 0 meaning highest priority. The area of the higher priority polygon will be enlarged in this mode. Gaps and overlaps between polygons will be assigned to the higher priority neighboring polygon.
Usage Notes
This transformer requires clean, valid data. For example, self-intersecting, or degenerate polygons will not be properly repaired.
Example
Editing Transformer Parameters
Using a set of menu options, transformer parameters can be assigned by referencing other elements in the workspace. More advanced functions, such as an advanced editor and an arithmetic editor, are also available in some transformers. To access a menu of these options, click 
beside the applicable parameter. For more information, see Transformer Parameter Menu Options.
Transformer Categories
FME Licensing Level
FME Professional edition and above
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