Question

intersection angle between line and polygon

K
Badge

I'm having polygon features (tunnels) and lines (railroads). Now I'm trying to figure out at which angle the lines enter and exit the polygon features.

Is there any way to do this?

2 replies

david_r
Rank
Userlevel 4

How about calculating the azimuth (AzimuthCalculator) for both the tunnel and the track segments, then using e.g. a LineOnAreaOverlayer to pair the track segments with their respective tunnels, then calculating the difference in azimuth.

david_r
Rank
Userlevel 4

You can also use the TopologyBuilder and analyse the node angles at the tunnel intersections, specifically _node_angle{}.fme_arc_id and _node_angle{}.fme_arc_angle

Doc: http://docs.safe.com/fme/2017.0/html/FME_Desktop_Documentation/FME_Transformers/Transformers/topologybuilder.htm

Reply


Community Stats

28,665
Posts
109,338
Replies
36,534
Members
Terms & ConditionsCookie settings
A product of
Safe Software respectfully acknowledges that we live, learn and work on the traditional and unceded territories of the Kwantlen, Katzie, and Semiahmoo First Nations.