Dear AI-list, in which context KED is mostly used? I have found examples of this methodology in the context of soil science and climatology: Bourennane, H.,...
2128
ABREU Carlos Eduardo
C-Eduardo.ABREU@...
Jul 1, 2005 1:51 pm
Dear Els A good reference on geostats in the oil industry is the excelent book from Olivier Dubrule "Geostatistics for Seismic Data Integration in Earth ...
2129
Gregoire Dubois
gregoire.dubois@...
Jul 1, 2005 1:54 pm
I forgot to Cc: to the list.. GD From: Gregoire Dubois [mailto:gregoire.dubois@...] Sent: 01 July 2005 13:04 To: 'Els Verfaillie' Subject: RE: [ai-geostats]...
2130
Recep kantarci
recep_kantarci_1978@...
Jul 4, 2005 12:42 pm
Hi Firstly I would like to thank E. Pebesma, P. Goovaerts and G. Dubois for valuable helps on “modelling trend”. One more question about the calculation of...
2131
sebastiano.trevisani@...
Jul 4, 2005 12:42 pm
Well, Simone in my Ph.D thesis (available online, see geostatistics in other language on ai-geostats web site)I tried to explain it in a simple way... Bye S....
2132
PCollier@...
Jul 7, 2005 12:29 pm
Hi all I may know this already, but what are the symptoms of data with a trend? What is the difference between a dataset with a trend and a non-stationary ...
2133
Albert Boulanger
aboulang@...
Jul 7, 2005 12:29 pm
... Here are two examples of using region growing to treat geospatial properties that are changing over time. ...
2134
Jose Luis Gomez Dans
jgomezdans@...
Jul 7, 2005 12:30 pm
Hi! I have a series of satellite images of the same region over a time series. In some cases, there are gaps due to cloud cover, which are interpolated...
2135
Simone Sammartino
marenostrum@...
Jul 7, 2005 5:21 pm
Dear all I have to thank you for your several references but I must admit I could not understand exactly the argument... My problem is about understanding...
2136
sebastiano.trevisani@...
Jul 15, 2005 2:32 pm
Dear Perry Collier I`m interested in the second question: what is the difference between a dataset with a trend and a non-stationary dataset? Without clearly...
2137
Ted Harding
Ted.Harding@...
Jul 15, 2005 2:33 pm
... Apologies if anyone else has replied to the above and I've overlooked it. 1. If you have a logarithm of that determinant then you are looking at the...
2138
Isobel Clark
drisobelclark@...
Jul 15, 2005 2:33 pm
Perry Your basic semi-variogram graph has a parabola added to it. Shoots off upwards (usually) at some distance. If the distance is large (past the range of...
2139
Steven Meeus
steven.meeus@...
Jul 15, 2005 2:33 pm
Dear list-members, I am new to this list (and the procedures), so please excuse possible unprofessionalities. This is my question/problem: I am studying the...
2140
Recep kantarci
recep_kantarci_1978@...
Jul 15, 2005 2:33 pm
Hi One of methods to estimate variogram or covariance parameters is maximum likelihood. Likelihood function contains the term logarithm of determinant of...
2141
Gregoire Dubois
gregoire.dubois@...
Jul 15, 2005 2:33 pm
Hi Perry, I am curious to see how others will reply to your second question on the difference between a dataset with a trend and one that is non-stationary! My...
2142
Pierre Goovaerts
Goovaerts@...
Aug 1, 2005 12:47 pm
Hi Ellen, I have a version of SGSIM that does that and would gladly share it with you. Note that the public-domain/windows software S-GeMS developed at...
2143
Norm, Ellen, Kathy & ...
normellen@...
Aug 1, 2005 12:47 pm
Hello all, does anybody have (or know where I can obtain) a version of the GSLIB program SGSIM that simulates directly to a points file? I want to simulate at...
2144
Andreas Dominik Cullm...
acullma@...
Aug 1, 2005 12:47 pm
Dear all, it's known how to derive the covariance values cov(h) of a lognormal process Z(s) from those of its corresponding gaussian process Y(s). Is it...
2145
samuel verstraete
samuel.verstraete@...
Aug 1, 2005 12:47 pm
Hello, I've tried this varfit thing... but i can hardly say that i get good results... Any other suggestions ? sincerely, Samuel On Thu, 23 Jun 2005 10:43:38...
2146
Nicholas Hamm
n.hamm@...
Aug 1, 2005 12:48 pm
You could try R -- which is a free version of S-Plus. www.r-project.org Nick ... From: "Milap" <milappunia@...> To: <ai-geostats@...> Sent:...
2147
Edward Isaaks
ed@...
Aug 1, 2005 12:55 pm
SAGE2001 at www.isaaks.com will autofit a variogram model to your data. ed ... From: "samuel verstraete" <samuel.verstraete@...> To: <ai-geostats@...>...
2148
Milap
milappunia@...
Aug 1, 2005 12:56 pm
Dear all, I am trying to do partial least square regression for reflactance , nitrogen concentration and water content in RS satellite data.Some one can...
2149
Pete Gething
P.W.GETHING@...
Aug 8, 2005 11:01 am
Dear list, I have Kriged predictions of a continuous variable at a set of 1700 points. I want to sum these values and obtain an estimate of the overall...
2150
Pete Gething
P.W.GETHING@...
Aug 8, 2005 11:01 am
Dear List Following up from my question regarding the variance associated with the sum of a set of values predicted via Kriging.. Many thanks to Pierre...
2151
Isobel Clark
drisobelclark@...
Aug 8, 2005 11:01 am
Hi Reza The best 'geostatistics' book I know in oil is Mike Hohn's Geostatistics and Petroleum Geology. There is also Geostatistics for Natural Resources...
2152
dee
diane.poon@...
Aug 8, 2005 11:01 am
there is also "Geostatistics for environmental scientists" by Richard Webster and Margaret A. Oliver you might find interesting it doesn't have excercises like...
2153
Ines
ialberic@...
Aug 8, 2005 11:01 am
Hello list Can you help me with references about: the minimum sample size necessary to use kriging, the best interpolator when the data have particular...
2154
ercan yesilirmak
ercangreenriver@...
Aug 8, 2005 11:01 am
Dear list members Standardized cross validation error is obtained by dividing the difference between an observed value and its kriging prediction value by...
2155
Pierre Goovaerts
Goovaerts@...
Aug 8, 2005 11:01 am
Hi Pete, This is a classical example where stochastic simulation would allow an easy quantification of the uncertainty attached to the aggregated value. Just...
2156
Malvić Tomislav
TOMISLAV.MALVIC@...
Aug 8, 2005 11:01 am
Dear Reza: I can recommend: Jensen, J.L., Lake, L.W., Corbett, P.W.M. & Goggin, D.J.: "Statistics for Petroleum Engineers and Geoscientists", Elsevier Good...
