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