Kelly Jardot writes:
> 
> Does anyone out there know how to determine resolution in arc seconds from 
> resolution in meters? I need to know the conversion algorithm for some work 
> we are doing with r.in.ll.scs.
> Thank, knj
> 
A simple calculation would proceed from the equation
	360 degrees = 40,000 km, or
	1296000 seconds = 40,000,000 meters
which means that one meter = 0.0324 seconds (one second = 30.86 meters).
Thus,
	Res_in_seconds = 0.0324 x Res_in_meters
at least at the earth's surface.

Martijn van Leusen

