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FME Desktop 2020: How the “dissolver” tool can aggregate the result?

  • December 20, 2021
  • 4 replies
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jamal
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FME Desktop 2020: How the “dissolver” tool can aggregate the result?

 

I couldn’t figure out if the “dissolver” tool can aggregate the result without the need to use the “aggregator” tool

 

In the screenshot below, when dissolving and aggregating according to the “autocad_color”, the result should be two features

 

Clip_1396 

 

Clip_1397 

 

 

Best answer by hkingsbury

Thank you for the input.

 

Then how can I end up with two features when dissolving based on the “autocad_color” field the same way the “dissolve” tool works in ArcGIS?

 

 

Clip_1405 

Clip_1406 

 

 

Combination of a dissolver (dissolves touching geoms) followed by an aggregator (aggregates features)

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4 replies

hkingsbury
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  • December 20, 2021

An aggregate isn't dependent on topology (geometric relationship) where as a dissolve will only operate over features touching. Part of the dissolve is to deaggregate any features. See the second bullet point here: http://docs.safe.com/fme/html/FME_Desktop_Documentation/FME_Transformers/Transformers/dissolver.htm


jamal
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  • Author
  • December 21, 2021

Thank you for the input.

 

Then how can I end up with two features when dissolving based on the “autocad_color” field the same way the “dissolve” tool works in ArcGIS?

 

 

Clip_1405 

Clip_1406 

 

 


hkingsbury
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  • Best Answer
  • December 21, 2021

Thank you for the input.

 

Then how can I end up with two features when dissolving based on the “autocad_color” field the same way the “dissolve” tool works in ArcGIS?

 

 

Clip_1405 

Clip_1406 

 

 

Combination of a dissolver (dissolves touching geoms) followed by an aggregator (aggregates features)


jamal
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  • Author
  • December 21, 2021

Great. It works fine

 

Clip_1410 

 

Clip_1411