I have have two datasets of polyonised data. 1. Field parcels 2. ineligible features that lie within field parcel polygons.. How can I identify if a field parcel polygon contains just one feature polygon or two or more feature polygons?
I'm relatively new to fm desktop and I'm wondering if there is a transformer that can help me with my issue?
thanks
I think the SpatialRelator helps you.
Send the Field parcels to the Requestor port, the ineligible features to the Supplier port of the transformer, and set a preferable spatial relation predicate to the "Tests to Perform" parameter. You can then get the number of related features as a new attribute (called "_related_candidates" by default).
Regarding definition of spatial relations, see here.
Spatial Relations Defined (http://docs.safe.com/fme/html/FME_Transformers/Default.htm#Transformers/spatialrelations.htm)
Takashi
After the test related_candidates>0 (eficiency) and subsequently >2 test for the "fme_feature_type" to idnetify wich intersects how often.
B.t.w. by using cardinality you can also test what kind of relation was detected.
Also you need to know that to some extent this transformer (SpatialRelator) is broken. It is or seems to be repaired in fme2015 beta, not in fme 2014 (yet?).
Wait a moment!
Gonna try see if all spatial functions work corectly...