I'm doing re-sampling pixel size in ERDAS 2014,I'm using input image(Indian terrain) in GCS_WGS_84 projection. Now I have to keep out put cell size as 1m,what is the 1m equvivalent value in Decimal degree?
Assuming a spherical Earth of radius, R = 6,371,000 m,
and a latitudinal (N-S) arc length, a = 1m,
then the latitudinal arc angle, dφ = a / R = 0.000000157 rad = 0.0000089932 deg,
but note what others have said about the fact that a longitudinal (E-W) arc length of 1m will have a longitudinal arc angle that increases as you move away from the equator.