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Question

Re-combining polygons as rings in a polygon

  • November 26, 2012
  • 2 replies
  • 20 views

I have input polygons that consist of multiple disconnected rings (as islands) and I am generalising them and removing islands of less than a certain area. I am using Generalizer, DonutHoleExtractor, SpatialFilter and DonutBuilder to do this and it works well, but the resulting layers are now individual polygons. I want to combine the polygons as rings in single polygons based on a unique ID. Can someone recommend a method of doing this please?

2 replies

gisbradokla
Enthusiast
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  • Enthusiast
  • November 26, 2012
I think you want the dissolver and possibly the featuremerger.  

fmelizard
Contributor
Forum|alt.badge.img+17
  • Contributor
  • November 26, 2012
Hi,

 

 

Have a look at the aggregator, you can combine all the polygons into one aggegate.

 

Itay

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