Hi All, I am performing estimation for Ni as a penalty element to our main ore, using nested spherical correlogram models. One of these shows abundant and...
2368
Colin Badenhorst
CBadenhorst@...
Feb 7, 2006 12:41 pm
Hi All, Thanks for the many replies thus far. Just to make it clear: the data has not been normalised. The samples (from drill core) have simply been ...
2367
Mario Rossi
marioerossi@...
Feb 7, 2006 12:41 pm
Colin, I suggest you don't have to complicate yourself. If using alternative a), do not touch the nugget; and there;s no need for "scaling" anything. The zonal...
2366
M. Nur Heriawan
mn_heriawan@...
Feb 7, 2006 12:41 pm
Dear list, I just want to know if anybody could hint me with some references or books regarding the relationship between geostatistics and geology (of ore...
2365
Glover, Tim
ntglover@...
Feb 1, 2006 1:53 pm
The method (derived from one in USEPA SW-846: http://www.epa.gov/epaoswer/hazwaste/test/pdfs/chap9.pdf - good discussion on page 9-6) is designed to estimate...
2364
Joe Kington
jdkington21@...
Feb 1, 2006 1:52 pm
My apologies for having taken so long to reply to everyone. It's been a busy week. I do appreciate the terminolgy warnings as regards UK vs. KT; I have a bad...
2363
Robert Pope
rpope@...
Jan 30, 2006 9:00 am
Hi all, I am writing with a specific question about the County of San Diego Site Assessment and Mitigation Manual (SAM Manual). In Section 5, Page 5-75, Table...
2362
Paul Walline
Paul.Walline@...
Jan 30, 2006 8:59 am
I’ve been a ‘lurker’ for a while, and have learned a lot from reading the discussions, so thanks in advance for that. My question concerns the use of the...
2361
Collier, Perry (TS)
Perry.Collier@...
Jan 30, 2006 8:58 am
I have Chiles & Delfiner's text, but the maths scares me...! Perry Collier Senior Geologist Rio Tinto Technical Services Phone: +61 7 3327 7676 Mobile: 0408...
2360
McKenna, Sean A
samcken@...
Jan 30, 2006 8:57 am
Peter, you might take a look at the applicaiton of scan statistics to answer these types of questions. The book, "Scan Statistics" by Glaz, Naus and...
2359
Collier, Perry (TS)
Perry.Collier@...
Jan 30, 2006 8:57 am
Hi all Would someone please be able to refer me to a reference book/paper (e-mail preferably) explaining the "Discrete Gaussian change of support" - a case...
2358
Joe Kington
jdkington21@...
Jan 30, 2006 8:56 am
Maria, Thanks for your suggestions! Unfortunately, the cross-covariogram is a random scatter around zero all the way out. It was a good idea, though... The...
2357
Isobel Clark
drisobelclark@...
Jan 30, 2006 8:56 am
Perry I don't know about the fancy title, but theoretical change of support for Gaussian (Normal) distributions can be found in Chapter 3 of Practical...
2356
diane poon
diane.poon@...
Jan 30, 2006 8:56 am
Dear AI-geostats list, These may be a silly questions...but why do variograms appear without error bars to each sample variogram lag point? I understand that...
2355
Joe Kington
jdkington21@...
Jan 30, 2006 8:56 am
Forgive me for jumping straight in with what is probably a rather difficult question, but I want to make sure I'm not "reinventing the wheel" here. Does anyone...
2354
Isobel Clark
drisobelclark@...
Jan 30, 2006 8:56 am
Paul Have you considered doing your analyses in two stages: (a) presence/absence indicator where all values other than zero become '1' and you are effectively...
2353
Dan Bebber
danbebber@...
Jan 30, 2006 8:56 am
Dear Diane, As far as I know, the sample variance for the semivariogram is not theoretically defined. One cannot simply calculate the variance as if the sample...
2352
"Julián Orti...
jmo1@...
Jan 23, 2006 4:21 pm
Dear Diane, Uncertianty in the variogram has been addressed by several authors: Eulogio Pardo-Igzquiza and Peter Dowd, VarianceCovariance Matrix of the...
2351
Peter Pinn
peterpinn@...
Jan 23, 2006 4:20 pm
Hi Group, Imagine a population of n individuals. Each individual has got x and y coordinates. Now these individuals tend to occur in aggregations, clumps, ...
2350
Pierre Goovaerts
Goovaerts@...
Jan 19, 2006 10:48 am
Hi Simone, Your definition is historically the correct one.. Note that the term "kriging analysis", sloppy translation for the term "analyse krigeante"...
2349
Njeri Wabiri
nwabiri@...
Jan 19, 2006 10:48 am
Dear list, I am looking for a good reference on probability kriging. grateful for response Njeri * By using the ai-geostats mailing list you agree to follow...
2348
Simone Sammartino
marenostrum@...
Jan 19, 2006 10:47 am
Dear All a term specification: What is the difference between "Factorial Kriging" and "Kriging of spatial components". I've always believed that the first is...
Hello Michel, Thanks for the information! Regarding the use of Voronoi polygons, recommended by many, my problem with it is that you can have in a monitoring...
2346
Anja Matatko
Anja.Matatko@...
Jan 17, 2006 11:13 am
Dear list, I'm writing my master thesis with subject "Spatial Data Mining: Development of a Decision Support System for Social Planning and Target Group...
2345
Michel.Maignan@...
Jan 17, 2006 11:13 am
hello gregoire Happy new year For network characterization and optimization, you have at disposal, dealing with the localization of samples, and not with...
2344
Oriol Falivene
oriolfalivene@...
Jan 17, 2006 11:12 am
Dear Colin, To my knowledge, many work has been done by applying geostatistics to the 2D mapping of coal properties (thickness, sulfur content..). I don't know...
2343
Collier, Perry (TS)
Perry.Collier@...
Jan 16, 2006 11:43 am
Hi all I have a minerals background and as such I'm unfamiliar with geostatistical applications to the coal mining industry. I would appreciate any feedback...
Dear list, Thanks a lot for the many replies to my query on how to distribute points in a complex area in an optimal way. A few of you gave me a list of papers...
2341
Heuvelink, Gerard
Gerard.Heuvelink@...
Jan 13, 2006 1:46 pm
Gregoire, In order to answer your question, you should first define a criterion (when is a network 'optimal'?). If the criterion is to minimise the spatially...
Dear list, I am looking for references (and possibly software) on network optimization. The variable monitored has no importance and I am looking for...
