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Connect lines that touch

  • May 21, 2019
  • 1 reply
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arnovananrooij
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Hi Community,

I have a lot of lines which are generated from raster centerpoints. All the lines consist of 2 vertexes. I would like to aggregate all the lines that touch to one feature. I tried this using the Linecombiner but this transformer doesn't connect lines when more than two lines come together. Any suggestions?

Best answer by david_r

Have a look at the NetworkTopologyCalculator, the resulting attribute _network_id will denote each separate group of connected lines.

If you need to create aggregates from the result, use the Aggregator and set the Group By on the _network_id.

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1 reply

david_r
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  • david_rCelebrity
  • 8394 replies
  • Best Answer
  • May 21, 2019

Have a look at the NetworkTopologyCalculator, the resulting attribute _network_id will denote each separate group of connected lines.

If you need to create aggregates from the result, use the Aggregator and set the Group By on the _network_id.

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