MIKE: The data is stored as depths and cps readings. The formula to be applied is:
Gcorr = (Cmid - ((1/((alpha * zint)*(alpha * zint)))*((Cplus + Cminus)-(2*Cmid))))*(K) Where Gcorr is the corrected cps Cmid is reading being corrected Cminus is the reading above Cplus is the reading below Alpha is a const value zint is 10 cm (the sample interval) K is is a constant Note the (alpha*zint) is squared that is why it is in twice. This formula assumes cps (counts per second) DATA index depth cps 1 10 100 2 20 100 3 30 90 4 40 125 5 50 145 6 60 200 7 70 150 8 80 110 9 90 90 10 100 85 11 110 75 12 120 85 So for example for the 4th reading; Cmid = 125, Cminus = 90 and for Cplus = 145. So I need to start at the 2nd reading and pass the 3 point filter thru the data to the end of the hole. Joe DB Drake-Brockman Geoinfo Pty Ltd 25 Deague Court North Perth 6006 Tel / Fax 08 9328 4891 Mob 0427 525952 Email [EMAIL PROTECTED]
