Hi Everyone,
First post, so be nice :)
Just doing a simple task of checking for duplicates based on polygon id within a .TAB file, (eventually I want to output as a shapefile). It has returned two polygons... How can I now amend the id's of the duplicate polygons by adding say either a or b? I've got attribute manager but not sure where to go from here?
Hope that makes sense :/
Thanks very much.
+12
After the DuplicateFilter (to find the duplicates) you can prefix the attributes of the duplicate output (let's say dup_) using the BulkAttributeRenamer.
Then you can use a FeatureMerger (Unique to Requestor, Duplicate. to Supplier) to add the duplicates attributes to the unique feature (if needed you can aggregate the polygon geometries in the FeatureMerger).
Hope this helps.
+7
If you want to prefix the values rather than the field names, use DuplicateFilter then send the duplicates to AttributeCreator (or AttributeManager) to set the value to ) where PolygonID is the attribute (field) name. a is plain text and @value(PolygonID) is the existing value of the attribute. You don't need to put quotes around the plain text.
If you had 3 instances of the same polygon ID and wanted the 2 duplicates to have different prefixes, you could use a Counter between the Duplicate port of the DuplicateFilter and the AttributeCreator. However I'm not sure this will do a, b, c etc directly. You might also need an AttributeValueMapper to map 1, 2, 3 to a, b, c and so on.
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