Hello,

I have a feature class from an geodatabase that contains larger and smaller features that overlap one another. I sort these features to have the larger features come before the smaller features.

The attributes of the feature class are: Id and date

The goal is to union the smaller and larger overlapping features, but only keep the attributes of the larger overlapping features. Since there is one feature class the overlapping areas share the same attribute names.

Therefore, I use the AreaOnAreaOverlayer transformer, with accumulation mode set to Use Attributes From One Feature.

However, I am unsure of the behavior of Use Attributes From One Feature accumulation mode. Which attributes are copied over to the resultant feature when the overlapping features are unioned?

The document mentions the following for the Use Attributes From One Feature accumulation mode: "Takes all attributes from one representative feature"

How does the AreaOnAreaOverlayer determine which of the overlapping features is the representative feature?

Thanks for taking your time to read this post.