Dear list, Just a simple question...
I'm trying to produce a contour map from a structural surface. This surface is highly non-stationary (actuaally dips towards NW) I wolud like to know which could be the best solution for getting a reliabel map: 1) Fit a plyonomial surface to the sample values, which is used as a drift. Substract the drift from the observations to get the residuals. Estimate the variogram of the residuals (now the residual variable is stationary). Perform OK on the residuals. Add the polynomial surface to the residuals to get the interpolated surface. 2) Compute variograms from the observations. Use universal kriging to get the interpolated surface. Thank you Oriol -- ______________________________________ Oriol Falivene [EMAIL PROTECTED] http://www.ub.es/ggac tel. (+34) 93 4021373 fax (+34) 93 4021340 Fac. de Geologia, Univ. de Barcelona
* By using the ai-geostats mailing list you agree to follow its rules ( see http://www.ai-geostats.org/help_ai-geostats.htm ) * To unsubscribe to ai-geostats, send the following in the subject or in the body (plain text format) of an email message to [EMAIL PROTECTED] Signoff ai-geostats
