Hi,

 

 

you can use the GeometryValidator for this.

 

 

David

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Well, if the open shapes are valid polygons, validator wont help. (in fme one can end up with polygons that look like lines, especially after analysing dirty/badly matched featuretypes.

 

 

A good way to it would be to create Hulls.

 

First use areacalculator on polygons, then create hulls. Calculate area of hulls.

 

Compare both areas.

 

Open polygons will have a big discrepancy in area.

 

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