Checks if curves form closed loops. Curves include lines, arcs, and paths. This transformer can also check aggregates of curves. An aggregate is closed if all of its elements are closed. If any element of an aggregate is not a curve, the aggregate is rejected.
Input Ports
Input
Input curves that may or may not be closed loops.
Output Ports
Closed
Curves that form closed loops.
Open
Curves that do not form closed loops.
<Rejected>
Features that are not curves
Parameters
Consider Node Elevation
This parameter specifies if loops should be checked in x, y, and z, or just x, and y.
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 Base Edition and above.
Transformer Background
This transformer deprecates the LoopFilter transformer from the FME Hub.
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Keywords: smooth smoother generalize generalizer