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I am attempting to process two sets of polygons to insert values from one set to another based on whether one is completely within the other or partially within.

 

 

My preference would be the ability to test each feature and "branch" the results based on whether they are completely contained within versus partially within.  If the objects are partially within then a test would be performed to determine if the centroid is within the other object.

 

 

I've used the spatial relator process but it apparently only tests wholly within, intersects or overlaps.

 

 

If possible in the future, I would suggest these functions be expanded to include Centroid or Majority (Determined by percentage of overlap) within.

 

 

At present the results of my workspace appear to read the feature that has the smallest overlap of one polygon to another when using the intersect option.  I've yet to really figure out why.

 

 

Thanks in advance.

 

 

Note that I'm not at my PC with FME on it right now so some of this is coming from memory.  I apologize if my terminology is a bit off.
I believe this article will help when it comes to how the SpatialRelator and SpatialFilter work in regards to spatial relationships between features: 

 

 

http://docs.safe.com/fme/html/FME_Transformers/Default.htm#Transformers/spatialrelations.htm

 

 

An overlap of less than 1% but greater than 0% is still classified as an overlap. If you are thus after some sort of percentage of overlap, your workspace could get a whole lot more complicated. I've designed a PercentOverlap custom transformer but this may not fit your example.

 

 

From your desired workflow, I'd thus suggest:

 

-  SpatialFilter with Intersects test

 

- PASSED port to a InsidePointReplacer

 

- SpatialFilter with Contains or Within test
You can make a spatialrelationship using the spatial relator.For your question you should use within ( contains; if its a 2-way comparison), overlaps and crosses.

 

 

Test for related_caddates >1.

 

Explode relationships{}

 

Use  listsearchers on the list  pass{} and test on those.

 

Listsearcher has found and not found output, so you have the branching you want.

 

 

NOT (CROSSES in pass{}  and OVERLAPS in pass{}) and WITHIN in pass{}

 

 

You can also use a testfilter, and enter the above conitions as a test.

 

 

Or you can use d9im (wich mostly give people a headache..)

 

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