Hello all! I am a complete novice regarding spatial statistics and am setting out to execute some spatial analyses (specifically spatial autocorrelation). I'm...
97
Jose G. Flores G.
german@...
Feb 21, 2001 8:37 am
Is there any specific difference between the terms "Ordinary Kriging" and "Point (Punctual) Kriging", or they are just synonymous? If so, could the difference...
98
abedini@...
Feb 21, 2001 4:21 pm
Dear Colleagues That would be great of colleagues out there could kindly direct me to a page whereby I could download "walker lake data sets" mentioned in...
99
Horacio J. Buscaglia
hjb2@...
Feb 21, 2001 4:21 pm
Hi, I want to calculate a croos-correlogram form a grid. I would like to plot the coeficients as a function of the positive and negative lags. Does anyone know...
100
Dobler, Lorenz
lorenz.dobler@...
Feb 21, 2001 4:22 pm
this was my question(s) I am dealing with heavy metals in upper soil layers of forests. Some of my (indicator) variograms behave like a spherical model at the ...
101
Isobel Clark
drisobelclark@...
Feb 21, 2001 4:23 pm
Ordinary Kriging is the generic term used for the system which produces the "Best Linear Unbiassed Estimator" from any support of sample for any support of...
102
Anna Kuczyñska
anik@...
Feb 22, 2001 5:50 pm
Hello, My name is Anna and I am writting my thesis about verification of groundwater monitoring system in the vicinity of pid mining. I use kriging for...
103
Heinz Burger
hburger@...
Feb 22, 2001 5:50 pm
Hello Anna, groundwater heads are extremely smooth surfaces and should produce gaussian behaviour of the variogramm near the origin (that is theory). In the...
104
Gregoire Dubois
gregoire.dubois@...
Feb 23, 2001 5:23 pm
Dear all, the normal score transformation set seems to be, at least in the litterature, the magic solution to handle a skewed data set. Could anyone point me...
105
Luca Bechini
bechini@...
Feb 23, 2001 8:45 pm
We are calculating the semivariogram of soil available-P content; in our data set, this variable was measured with different methods depending on soil pH. ...
106
Syed Abdul Rahman Shi...
sshibli@...
Feb 27, 2001 11:40 am
... Decisions, decisions. Some variables are inherently skewed (e.g. rock permeability, mineral concentrations, etc) while some would raise an eyebrow if found...
107
Chandra Subhash
s.chandra@...
Feb 27, 2001 11:40 am
Date: Mon, 26 Feb 2001 00:56:27 -0800 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain; charset="iso-8859-1" Dear All, ...
108
Ricardo Lázaro
ricardo@...
Feb 27, 2001 11:40 am
Hello, I am a newcomer in Geostatistics, so my experience in variogram fitting is still very short. I have two questions: 1. what is the correlation of...
109
Isobel Clark
drisobelclark@...
Feb 27, 2001 11:40 am
Ricardo It sounds like most of your problems are directly related to understanding the software products you are using and should be directly addressed to your...
110
L. Wiles
wiles@...
Feb 27, 2001 11:40 am
Summary: What is the interpretation of a directional correlogram that does not reach the sill? Details: I'm using correlograms to describe the spatial...
111
claudio.cocheo
ccocheo@...
Feb 27, 2001 11:40 am
Dear all, it's the first time I write to this interisting mailing list, My question is: what does it mean if the sill of the variogram is higher (a little...
112
Syed Abdul Rahman Shi...
sshibli@...
Feb 27, 2001 11:40 am
... Either you have a "drift" or trend (non constant mean) or you truly have a variable with an infinite capacity for dispersion (fractal model). A model is a...
113
L. Wiles
wiles@...
Feb 27, 2001 11:40 am
... Thank you for the responses. I would like to add some information in case it might be helpful: -My data is highly skewed with usually >50% zero counts....
114
Mario González-Po...
glezposada@...
Feb 28, 2001 4:55 pm
Hello: My name is Mario Gonzalez-Posada and I am begining to use geostatistical tools in soil salinity mapping. I would like to know how to use block kriging...
115
MBurnett@...
Mar 2, 2001 4:54 pm
Hi all I have heard about a technique called Fry analysis that supposedly has been used with some success in Australia when analysing small data sets ...
116
Gregoire Dubois
Mar 4, 2001 11:12 pm
This is not a complete answer to your question. The principal problems with using a non-linear transformation of the data in geostatistics are 1. Analytically...
117
Gregoire Dubois
gregoire.dubois@...
Mar 5, 2001 1:36 pm
Dear all, I’m sorry for being so late with the summary of the replies I got to the following question - What are the drawbacks of the normal score...
118
Juliann Aukema
jaukema@...
Mar 5, 2001 7:42 pm
This is a summary of responses to my long, multipart question. Thanks a lot to everyone who responded. I really appreciate it. Some general sources suggested: ...
119
Ian Hunt [KLP BUSINES...
Ian.Hunt@...
Mar 12, 2001 4:38 pm
Dear All, I have recently started a post graduate degree in Environmental Management and I would really appreciate any links to people, groups or websites in...
120
NEFIA NEFIA
ne100fia@...
Mar 12, 2001 4:38 pm
Hi list, I was so pleased to discover this I just had to share--if you put any? dos program in your c:\windows\command directory on your pc, you can access it ...
121
Sara Kustron
skustron@...
Mar 14, 2001 8:48 am
I have been using Variowin for my variogram analysis. My covariograms are much better behaved compared to semivariograms, and I would like to use the...
122
Syed Abdul Rahman Shi...
sshibli@...
Mar 14, 2001 8:48 am
... Non-ergodic covariances account for possibly changing means across the region. Means used are different at h- and h+, so the covariance formula is slightly...
123
Sara Kustron
skustron@...
Mar 14, 2001 8:18 pm
Thanks for the helpful responses. I opted to use this estimator for model parameters because after detrending my data, the residuals gave almost an identical...
124
Sara Kustron
skustron@...
Mar 16, 2001 9:07 am
Non-ergotic covariance formula: Isaaks and Srivastava p. 59, formula 4.2. Floating point error, response from Sebastiaan.Luyssaert@... Try closing all...
125
Marco Alfaro
malfaro@...
Mar 16, 2001 9:07 am
Dear Sara: Sorry, but the "non ergodic" variogram is an artifact! If you do not believe to me, see the comments about my paper in NACOG 1996 or in...
