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Question

Does Dissolver Dissolve separated polygons?


klingdom
Contributor
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We have short Workspace to update attributes and geometry (polygons) and added the Dissolver transformer, but when run the polygons are not Dissolved. When run we get more tract in the output than when in. Cannot see why this is not striate forward. Thx

 

WorkspaceDissolver

5 replies

nielsgerrits
VIP
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Are the incoming features aggregates?


nielsgerrits
VIP
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nielsgerrits wrote:

Are the incoming features aggregates?

You can test this with an aggregatefilter. The dissolver is set to deaggregate aggregates.


od10
Contributor
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  • Contributor
  • May 9, 2023

Hi @klingdom​ ,

I've had this before, if the polygons are not spatially aligned or overlapping, the dissolver will actually deaggregate them and split them into seperate polygons. Rather annoying, take a look at the aggregator transformer instead.


klingdom
Contributor
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  • Author
  • Contributor
  • May 9, 2023
nielsgerrits wrote:

You can test this with an aggregatefilter. The dissolver is set to deaggregate aggregates.

Thx. These are aggregates.


klingdom
Contributor
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  • Author
  • Contributor
  • May 9, 2023
od10 wrote:

Hi @klingdom​ ,

I've had this before, if the polygons are not spatially aligned or overlapping, the dissolver will actually deaggregate them and split them into seperate polygons. Rather annoying, take a look at the aggregator transformer instead.

Many thx od10. Thx. Aggregator does seem to work. Have to run a few more test.


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