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In set theory, the union (denoted by ∪) of a collection of sets is the set of all distinct elements in the collection. It is one of the fundamental operations through which sets can be combined and related to each other.

2 votes

Iteratively unioning pairs of shapefiles

first folder into a list using ListFeatureClasses Do the same for the second folder zip() the two lists into a dictionary: Example Iterate over the dictionary's key/value pairs (Example) and perform the Union
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What is the FME Equivalent to the ArcGIS Union tool?

I believe the AreaOnAreaOverlayer is the transformer that performs the equivalent of an ArcGIS Union. …
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