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GPS_Float Object - which method is best to calc short distances between two poi — Parallax Forums

GPS_Float Object - which method is best to calc short distances between two poi

LarryGLarryG Posts: 50
edited 2010-04-23 00:33 in Propeller 1
My project is a computer for my bicycle. I am really enjoying learning SPIN and reading many of the posts here. One main function of my bike computer is GPS. The guys I ride with inevitably want to take a shortcut back home, and we end up riding an extra 20 miles around farmlands of Ohio. No matter where I am I will have the bike computer point toward home with an arrow, and tell me the distance to get back home (as the crow flies). (And I think I am better off following a randomly flying crow than my buddies when it comes to getting back home [noparse]:)[/noparse]

GPS_Float looks like the hot ticket for this function. But I don't know much about navigation and am looking for advice. Knowing I would typically be traveling a max of 100 miles from home, what method is best to determine distance (and bearing) to home? Is it the Float_RhumbL_Dist method, or should I focus on the Great Circle methods?

Thanks for any input.

Larry

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