180 degree offset of r.slope.aspect (& now s.surf.tps)

Virginia R. Hetrick IARGRAF at MVS.OAC.UCLA.EDU
Tue Dec 29 11:56:00 EST 1992


Just a wild holiday thought!

Can it be that somebody tied it to the way most computer graphics are
oriented?  The positive x-axis is normally 0.0 degrees, the positive
y-axis 90.0 degrees, the negative x-axis 180.0 and the negative y-axis
270.0.

;-)

virginia



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