Best Answer

ListBasedFeatureMerger with list as Supplier key ?

Forum|Forum|6 years ago
July 16, 2019
2 replies
30 views

levonslagmulder

Hello,

I'm trying to find an elegant solution for a feature merge based on the same list, twice.

So, data is a shapefile with polygons as features. Each polygon have a _class{}.ID list. The goal is to compare each _class{n}.ID to other polygons (not itself) _class{n}.ID (nmax is different for each polygon), to finally agglomerate their geometry.

Issue is that ListBasedFeatureMerger takes attributes as supplier key and not lists.

Example:

NAME

_class{0}.ID

_class{1}.ID

_class{2}.ID

Oscar

27

92

1

Tango

1

Charlie

Golf

22

12

Whiskey

92

Hotel

137

4

6

So here, Oscar, Tango and Whiskey would be agglomerated.

How could that be done ?

Thanks

Best answer by ebygomm

Take a look at the custom transformer - ListCombiner

This will assign a common group value to all attributes that share values in a list

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