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Also make note of the use of 10E6 in GFUNC and DESIRE = 1.5, I recommend this method over DESIRE = 0.00000015 and GFUNC = abs(pvor(pres,wnd)) as the latter will produce less complete coverage. -mj > GDPVSF interpolates to PVBL for the same ranges: > > 1) > GDFILE = test/vcord_thta_270-380.grd > GDOUTF = test/vcord_thta_270-380.grd > GFUNC = mul(exp(10,6),abs(pvor(pres,wnd))) > GDATTIM = f00 > GVCORD = thta > STARTL = 380 > STOPL = 270 > DESIRE = 1.5 > GDOUTL = 15 > GVOUTC = pvbl > GPACK = > GLIST = thta > PMAX = > Ticket Details =================== Ticket ID: RJR-299468 Department: Support GEMPAK Priority: Normal Status: Open