Question

Lineonlineoverlay - exclude self-intersections

  • 15 May 2019
  • 1 reply
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Hello,

I am using LineOnLineOverlay to detect intersections within a polyline dataset. I am only interested in intersection points that involve more than one feature, and would therefore like to exclude any intersection points where a feature is intersecting against itself.

Using the attached image as an example; I wish to ignore the intersection where line A is intersecting itself, but need to record where lines A and B intersect, and where line C crosses over line B.

TIA,

RB

 


1 reply

Badge +22

What about assigning each feature a unique ID and then use a topologyBuilder. You can examine the node list to identify which nodes have multiple edges and whether they were part of the same feature originally.

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