Dear Betty, et. al., ... I am ignorant of geostatistical methods on ore bodies. However, I have been using variations of geostatistical techniques on...
201
Francisco Jesús Mo...
fjmoral@...
May 5, 2001 8:10 pm
Hi list, I would like to know which is the best software to make an complete geostatistical study. Until now, I have been using Variowin, to get the variogram,...
202
Isobel Clark
drisobelclark@...
May 7, 2001 7:39 am
... ^ Waghei If this is an omni-directional semi-variogram, then what you have is a severe case of anisotropy probably complicated by a strong trend. I would...
203
Yadollah (Majid) Waghei
waghei@...
May 7, 2001 7:40 am
Hello list members My Empirical Variogram for a spatial data set has an cubic like form(see below). Then the ordinary variogram models such as Exponential,...
204
Ulrich Leopold
uleopold@...
May 7, 2001 7:40 am
Dear Waghei, At first I would not trust only in the traditional semivariogram. You should better use more robust measures to evaluate the semivariogram ...
205
WARR Benjamin
benjamin.warr@...
May 7, 2001 12:05 pm
Dear Yadollah, have a look to see if you have any strong outliers using a variogram cloud. Your potential drift may simply be a single erroneous or extreme...
206
Ian Hunt [KLP BUSINES...
Ian.Hunt@...
May 7, 2001 12:05 pm
Hello List Members, I am trying to use Kriging Efficiency and Regression Slope on a grade model to draw the boundaries between Inferred/Indicated on an...
207
Isobel Clark
drisobelclark@...
May 7, 2001 12:05 pm
Ian The use of regression slope to measure kriging efficiency or confidence in an estimate is spurious. The slope of the regression line has nothing to do with...
208
Heinz Burger
hburger@...
May 7, 2001 3:39 pm
"Ian Hunt [KLP BUSINESS DEVELOPMENT]" schrieb: Hello Ian, for classification reports on ore reserves you may refer to the jorc guidelines, which are very...
209
Gregoire Dubois
gregoire.dubois@...
May 7, 2001 3:41 pm
Dear all, the AI-GEOSTATS web pages are back on the internet since last Friday. Therefore, any announcement that is not subject to discussions (jobs, books, ...
210
Juliann Aukema
jaukema@...
May 10, 2001 7:30 am
I appologize for the delay in posting a summary to my question on data transformation. Here it is, better late than never, I hope. Thanks a lot to all those...
211
NomeEsteso
alambert@...
May 10, 2001 12:56 pm
I'm interested in multivariate spatial data expecially geostatistical data. Where can I find simulations using cokriging? Thanks. Aldo -- * To post a message...
212
Anja Gassner, PB
Gassner.PB.FAL@...
May 18, 2001 8:43 am
Hi there, I’m looking at a soil samples taken as a12.5m grid (540*180m) of a very homogeneous field. I’m using variowin and have been calculating...
213
Hugo PILKINGTON
h.pilkington@...
May 18, 2001 8:43 am
Dear list members, Please forgive me if this a very basic question, but I am a newcomer to geostatistics. I am working on the spatial distribution of malaria...
214
Agnes Wong
agnesw@...
May 18, 2001 8:43 am
Hi, I am working on a study characterizing post-fire island remnants and their fire boundaries. The study design is as follows: My study site consists of 9...
215
Nicholas Lewin-Koh
kohnicho@...
May 18, 2001 8:43 am
Hi, If you look on statlib in the S archive there is code submitted by Jenifer Hoeting for Bayesian autologistic regression. Look at ...
216
Yadollah Waghei
waghei@...
May 18, 2001 8:43 am
Hello dears I have a spatial data set contaning n=262 observarion (The variable of interest is Rate of Tuberculosis in 262 counties of Iran). I want to fit...
217
Yadollah Waghei
waghei@...
May 18, 2001 8:43 am
Hello dears I have a spatial data set containing n=262 observations (The variable of interest is Rate of Tuberculosis in 262 counties of Iran). I have fitted...
218
Isobel Clark
drisobelclark@...
May 18, 2001 8:43 am
Think of it as focussing a camera. You are looking for the clearest picture. There will be a certain lag (in each direction) at which the calculation will...
219
Isobel Clark
drisobelclark@...
May 18, 2001 8:43 am
Are you using some kind of automated fitting? The results would suggest that the model is inappropriate or that your basic assumptions are inappropriate. You...
220
Andrew Mullens
andrew_mullens@...
May 18, 2001 8:43 am
I have a question relating to this question, certainly not to question the previous writer, it just seems like a good time to bring it up. Will variograming...
221
Isobel Clark
drisobelclark@...
May 18, 2001 8:43 am
Andrew You can apply 'standard' geostatistics if the measurements are the 'average' (or some similar feature) over an area. It makes interpeting the...
222
K. Ramanitharan
ramanitharan.kandiah@...
May 18, 2001 8:43 am
Dear AI-GEOSTATiSticians, My research is on heavy metal pollution in water bodies. As a part of the analysis, I am doing kriging with the pollutant data. I...
223
Isobel Clark
drisobelclark@...
May 18, 2001 8:43 am
... Hi, some thoughts (your numbering): (1) One of the things I have found successful is the following: construct your semi-variogram using ALL of your data...
224
Isobel Clark
drisobelclark@...
May 18, 2001 8:43 am
... wrote: > ... This is something I learned about in quantitative ecology in the 1960's ;-) You take each sample in turn and find the sample closest to it....
225
Isobel Clark
drisobelclark@...
May 18, 2001 8:43 am
Lucie, sorry I got this message when I tried to reply to your e-mail. Hope you got the generic mailout. ... Isobel ...
226
K. Ramanitharan
ramanitharan.kandiah@...
May 18, 2001 8:43 am
K. Ramanitharan asked, Dear AI-GEOSTATiSticians, My research is on heavy metal pollution in water bodies. As a part of the analysis, I am doing kriging with...
227
Francisco Jesús Mo...
fjmoral@...
May 18, 2001 8:43 am
Hi all colleagues, This mail is to summarize all (numerous) answers to my questions (I hope everyone is included; forgive any omission). It has been very...
228
Hugo PILKINGTON
h.pilkington@...
May 18, 2001 8:43 am
Dear list members, Here is a summary of the answers I received concerning my question about interpolation techniques for malaria vector data. Many thanks once...
229
Berterretche, Mercedes
Mercedes.Berterretche...
May 19, 2001 4:18 pm
Could someone clarify to me what local and global accuracy really mean in a geostatistical context? Thanks in advance, Mercedes Berterretche -- * To post a...
