here my scope:
I have tracking position of many runner (name,lat long and time). I need to know at waht time each runner enter and exit from a polygon (defined by lat long).
What I did so far:
Using inpolygon function I create a new table with runner name, lat long, and time when they were inside the polygon but data they are quite a lot.
Anyone has an idea on how I could select for each runner only the entry time and exit time form the polygon?
Any advice on how to approach the problem is welcome.