I am searching a way to "hydrologically" connect upstream points to a unique downstream outlet by creating an optimized stream network as pictured below...
The cummulated lenght of the stream lines should be minimized.
Otherwise the stream network should remains confined within a defined polygon...
I only know the input points (red) and the output (green) and the polygon. There is no other constraints
Does anyone know how to do it ?...
I searched on the web all the morning but without succeed
No I rightly try to do it without considering the topography... Just a flat (or approx flat) surface. That's why I am searching a way for so long time :-)
It is an hyopthetical area.
Imagine that you are in you bath.. the water level rises up and overflow on a downstream threshold - at a corner of you bath..
Then you add a few particles at different corners of your bath (upstream) and you try now to sketch what will be their circulation to reach the threshold by forming an optimized network.. The stream network (as I draw on the right) should be minimum regarding the particles input.
Am I understood ? :-)