Is it possible to create a multiring buffer in workflow or create a donut?

Halil Siddique

11 December 2019 14:17

Hi all,

 

 

Im working on a workflow, where the user will click on at the map and multiple buffers at specified distances will be drawn and then analysis done on the intersecting features.

 

 

There does not seem to be a way out of the box to create a multiring buffer using the Buffer task, i have at the moment using  3 buffer tasks which have a specific distance and then drawn, but

 

1. Is it possible to create a multiring buffer?

 

2. If it is not, how do i clip buffers, eg the 200m buffer will have a donut of the 100m buffer.

 

 

thanks

 

 

halil

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  Berend Veldkamp

  12 December 2019 14:38

  The Buffer task has a Distances property (note the 's'). It's just not on the Designer surface, but rather on the Properties screen on the right. Set this value for instance to: { 100, 200, 300 }. The results will contain a buffer for each distance you provided

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  Halil Siddique

  12 December 2019 15:33

  Thanks Berend, Thats done the multiple distances. what is the best way to create donuts for each of the buffers, i was hoping there would be a Clip task within the geometry service, but there isn't one.

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  Berend Veldkamp

  12 December 2019 15:41

  I think you will need to use the Difference Task for every combination of two buffers. For the first pair, you could set Feature Set to New FeatureSet(graphics(0).Geometry) and Geometry to graphics(1).Geometry, where graphics contains the Buffer Task results.

   

   

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