Hi Mats,
I will try to answer your questions - although they are a bit broad:
1. shortest distance (in the plane) between a point (surfer) and a line
geometry (the coast) - packages like geos or jts can do this using their
DistanceOp function. However, you would need to convert the GPS
Hi
I work on a student project in a course about Use Design at University of
Oslo. Our project is to help windsurfers; We try make a small gadget that
that they can bring (using Arduino) that will help them (1) be alerted when
they move too far from land, (2) be able to send a SOS signal
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