Maureen, I believe we met in Savannah a couple of years ago. If you don't mind, could you send me any responses you get as a summary? Such seems useful to ...
617
Chaosheng Zhang
Chaosheng.Zhang@...
May 3, 2002 7:54 am
Dear all, The following is a summary of replies for my question: Risk assessment with Gaussian simulation. Thanks for all the thoughtful replies. Generally...
618
Noemi Barabas
barabas@...
May 3, 2002 7:54 am
Dear Maureen, I have dealt with the same problem. The basic approach is to transform your coordinates as Warren suggested. If you only have one measurement ...
620
Arþ. Gör. Fevzi...
fevzi@...
May 6, 2002 1:09 pm
dear all, I new in geostatistisc and using gs 5.1 sofware. My question is especially about this sofware. When modelling anisotropic variogram I have...
Dear Listers, I have presented a related question very early, which is still under solution. Sorry for not making my question clear. Given that {N(i,j)} i,j =...
622
Poos, J.J.
J.J.Poos@...
May 7, 2002 11:29 am
Dear list members, I have a question related to the question of Mr. Xiaohua Dai. Does anyone have SAS-code that calculates the nearest neighbourdistance among ...
623
Soeren Nymand Lophaven
snl@...
May 8, 2002 8:04 am
Dear list Last week I asked the following question regarding the gaussian semivariogram model: I have experienced that the gaussian semivariogram model...
624
mbf@...
May 8, 2002 8:04 am
Dear Sirs, I am looking for the most appropriate way to analyse soft or hard boundaries between a group of samples. There is a geological model, however the...
625
Ruben Roa
rroa@...
May 8, 2002 8:04 am
Hi all: In intrinsic geostatistics, spatial continuity is described by a model (usually the 'theoretical' variogram). Its parameters are estimated by fitting...
626
eriveltomercante
eriveltomercante@...
May 15, 2002 7:32 am
Hello, Everything well! ... of Paraná - UNIOESTE, of the city of Cascavel, Pr - Brazil. ... in finding specific works on escaling of semivariogramas. I would ...
627
jack webster
webstrr@...
May 15, 2002 7:34 am
Hi Dear doctor Myers Thank you for replying I have constructed a more general variogram model, in which all of the parameters are varying with direction. My...
628
jack webster
webstrr@...
May 15, 2002 7:34 am
Hi Isobel Clark Thank you for replying I am not worry for "different sill in differnet direction". Because I have an anisotropic variogram model, and want to...
629
Isobel Clark
drisobelclark@...
May 15, 2002 7:34 am
Hi In my limited experience, different sills in different directions occur for one of the following reasons: (#) you have not yet reached the total sill in one...
630
Gerald van den Boogaart
boogaart@...
May 15, 2002 7:34 am
Dear Jack Webster, The mapping of the variogram to the covariogram is not one to one. When c(h) is a covariogram having g(h) as variogram, then c(h)+k for...
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jack webster
webstrr@...
May 15, 2002 7:35 am
Hi Dear doctor Abedini I have constructed a more general variogram model, in which all of the parameters are varying with direction. My model more general than...
632
jack webster
webstrr@...
May 15, 2002 7:36 am
Hi all list members Suppose that g denote the semi-variogram and C denote the Covariogram functions. According to Cressie(1993, P. 67) the relation is g(h)...
Thanks for your advice, all. I downloaded the Surfer 8 demo software and found that Surfer 8's results are much closer to mine than Surfer 6. This, Mr....
634
Bambang Trisasongko
bht@...
May 15, 2002 7:37 am
Hi Eva, I usually saw the problem in remote sensing image analysis. From my experience, the difference is based on different use of floating point data types....
Hello, Has anyone used or encountered Surfer 6.04 by Golden Software? I have been using Surfer to interpolate grids of points using Kriging and other methods,...
636
jack webster
webstrr@...
May 16, 2002 12:53 pm
... ===================================================== YES. I must explain my problem, more. I considered to isotropic variogram models g1 and g2 ... - g1...
637
Chaosheng Zhang
Chaosheng.Zhang@...
May 21, 2002 7:37 am
Dear (geo_)statisticians in the list: I'm quite often confused with the requirement of "normal distribution" in (geo)statistics. My question is: When the...
638
Isobel Clark
drisobelclark@...
May 21, 2002 7:37 am
Short answer is yes to everything. middle length answer is that Normality is not required for anything except where it is a basic assumption - such as in...
639
Chaosheng Zhang
Chaosheng.Zhang@...
May 21, 2002 7:37 am
Isobel, Thanks for the reply. I feel this problem deserves more discussion. I have found the message from: Gregoire Dubois, Date: Mon Mar 5, 2001, Subject:...
640
Brian R Gray
brgray@...
May 21, 2002 7:38 am
nice point. classical statisticians are slowly eating away at how to estimate variance structures under a marginal binary assumption using relatively simple...
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Ruben Roa
rroa@...
May 21, 2002 7:38 am
Chaosheng Zhang wrote: [snip] Hi Chaosheng: A few points about log transforms. See below. ... There shouldn't be any loss of information since the log...
Dear all, I would like to put a few links on the AI-GEOSTATS web site to good tutorials & books about geostatistics & spatial statistics that are not written...
643
Din Chen
Din@...
May 22, 2002 7:19 am
Hi, all: I would appreciate your comments on following approach: Suppose that I have n data points s(l), l =1,..n. If I like to test whether the mean is zero,...
644
Isobel Clark
drisobelclark@...
May 22, 2002 4:35 pm
Din One of the things you need to consider is whether you want to test the mean of the whole population or of a specific area in space. The 'population' in...
645
Adrián MartÃn...
amvargas@...
May 23, 2002 12:59 pm
I have do these question a log time ago, but I lost the answer. How to get the information that gave GSLIB90 after executed that look like these: ROTCOORD...
646
mfrehner@...
May 24, 2002 3:16 pm
Hi everybody I'm writing a diploma thesis about error propagation in digital terrain models and I want to use monte carlo methods to simulate elevation errors ...
