Hello,
Is there a transfomer to know the direction a polyline was drawn (forward or backward) ?
Thank you
Solved
Get the direction of a polyline
- Participant
Best answer by tcrossman
tomfriedl wrote:
This is a polyline:
_______________________________
What means here forward or backward?
Maybe first vertex = start, last vertex = end, and direction = start to end?
Use CoordinateExtractor to get _indices{} list attribute added to feature and then access the first and last coordinates as _incices{0} and _indices{-1}
+13- Contributor
This is a polyline:
_______________________________
What means here forward or backward?
+1- Contributor
- Best Answer
tomfriedl wrote:
This is a polyline:
_______________________________
What means here forward or backward?
Maybe first vertex = start, last vertex = end, and direction = start to end?
Use CoordinateExtractor to get _indices{} list attribute added to feature and then access the first and last coordinates as _incices{0} and _indices{-1}
- Participant
tomfriedl wrote:
This is a polyline:
_______________________________
What means here forward or backward?
I'm working on wast water, a web application needs to know the network flow orientation in order to define symboly for the layer.
- Participant
tcrossman wrote:
Maybe first vertex = start, last vertex = end, and direction = start to end?
Use CoordinateExtractor to get _indices{} list attribute added to feature and then access the first and last coordinates as _incices{0} and _indices{-1}
Thank you I'll see
+51- Celebrity
Have a look at the OrientationExtractor - http://docs.safe.com/fme/html/FME_Desktop_Documentation/FME_Transformers/Transformers/orientationextractor.htm
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