I have a single dataset containing a set of polygons. Some of these polygons are touching each other. I would like to dissolve polygons which are touching (of orverlapping) into one large polygon. However, I would also like the new large polygon to take over the attributes from a specific feature.
The feature from which the attributes are to be taken has a specific name in one of the attributes. Let's call this attribute “NAME". Hence, I sorted the features based on “NAME” before feeding to the Dissolver. However, it seems the Dissolver does not choose my first sorted feature to take the attributes from, but it seems to choose the feature (polygon) with the largest surface area. There does not seem to be a setting in the Dissolver which allows me to choose how the attributes are handled and how it chooses from which feature to take the attritubes.
How do I dissolve my polygons, taking the attributes from the polygon where “NAME” has the value lowest in the alphabet?
I don't know on beforehand which polygons to merge based on a GROUP-ID or something. I am not using any group-by functions.
I am using FME Workbench 2025.2.4.
Question
Dissolving polygons taking attributes from specific/sorted features
+1- Participant
+66
Several ways to do this, but one is to create a list from all attributes, this can be done in the Dissolver. After Dissolving, generate a group id for each dissolved result. Then use a ListExploder to explode the list. Then a use a Tester to keep the one you want.
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