Hello, I have a question about using line transformers. I have lines and polygons. Some lines are touching polygons at both ends, some lines are touching 1 polygon at 1 end. Some lines are touching no polygons. How can I determine the lines who touching the polygons at both ends?
Kind regards,
Steven Loosman
+1
If you use a SpatialRelator, with your lines as the requestor and the polygons as the supplier, you can use the related candidates-parameter (should be 2).
If there is a risk of intersections other points of the line too, use a snipper with (5%,95%) and perform the same process on the first and last snippet of the line. Then aggregate and sum the related candidates.
+21
Alternatively you can extract the start and end points of each line using a coordinate extractor (0 for start of line -1 for end of line), create points and perform a spatial test using spatial relator to see if the point touches a polygon. Aggregate the results based on an id for the line feature summing the related candidates and only those lines that have related candidates of 2 touch a polygon at both ends
I tried the SpatialRelator and it works. Thanks for the answers.
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