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seen Jul 24 at 12:54

Mar
7
awarded  Supporter
Mar
7
comment How to automatically create all possible polyline routes connecting many point locations around a polygon obstruction?
Thank you for your detailed answer. I had briefly looked at the cost distance tool in Spatial but felt a raster solution was a bit clunky. The biggest issue is that I am faced with this problem in a work situation, where time is money! I think I follow your visibility graph concept and will look into that.
Mar
6
comment How to automatically create all possible polyline routes connecting many point locations around a polygon obstruction?
Yes, as I say I need to avoid the polygon and not simply connect them which would be very easy - the ships can not sail over land, only around it. If you are familiar with distance matrixes such as found in a road atlas or nautical almanacs, this might help you understand how it is possible to describe distances between one location and many other locations. Apart from that I don't think I can make anything any simpler for you I'm afraid.
Mar
6
awarded  Editor
Mar
6
revised How to automatically create all possible polyline routes connecting many point locations around a polygon obstruction?
corrected number of locations
Mar
6
comment How to automatically create all possible polyline routes connecting many point locations around a polygon obstruction?
For 60 ports, there would be 1770 unique non-replicated non-zero distances to be calculated. As described, I am trying to calculate the distances ships would have to travel between each port. In the real world I would need to consider minimum water depth, but at the moment for proof of concept, I have only listed the island polygon as the only constraint to the ship routes. Apart from avoiding land (the polygon), the polylines just have to connect the points along the shortest route.
Mar
5
awarded  Student
Mar
5
asked How to automatically create all possible polyline routes connecting many point locations around a polygon obstruction?