Merge Attributes checkboxes on Overlayer transformers do not generate lists.

Merge Attributes checkboxes on Overlayer transformers do not generate lists.

• A. True
• B. False
• C. Not related
• D. Sometimes

Answer: (A)

At the heart of this is how the Overlayer handles attribute merging. The Merge Attributes options simply choose which attributes from the overlay features should be copied onto the base features when there’s a match. They don’t instruct the transformer to collect multiple overlay values into a single list. In practice, if several overlays intersect the same base feature, you end up with a single merged value for each selected attribute (based on the overlay matching order), not a list containing all values. If you need to capture multiple values, you’d use a separate step to build a list after the merge.

At the heart of this is how the Overlayer handles attribute merging. The Merge Attributes options simply choose which attributes from the overlay features should be copied onto the base features when there’s a match. They don’t instruct the transformer to collect multiple overlay values into a single list. In practice, if several overlays intersect the same base feature, you end up with a single merged value for each selected attribute (based on the overlay matching order), not a list containing all values. If you need to capture multiple values, you’d use a separate step to build a list after the merge.