Hello list members, when I posted my questions this morning -printed below- I have not emphasized enough the question on the transformation from time to space ...
1651
Isobel Clark
drisobelclark@...
Aug 4, 2004 7:17 am
Can anyone out there help this guy? I have not attached his paper but can forward to anyone interested. Isobel http://geoecosse.bizland.com/whatsnew.htm ... ...
1652
Volker Bahn
lochapoka@...
Aug 4, 2004 7:17 am
Dear list members, I created conditional autoregressive regression models for bird incidence data of 110 species at a national level in the following way: Each...
1653
jd92@...
Aug 7, 2004 11:51 am
Dear All, I am looking for some advice on the best type of spatial analysis to use for some soil plot data I have. I was initially going to compare variograms...
1654
Harris, Allan
Allan.Harris@...
Aug 7, 2004 11:51 am
Hello! I would suggest using spatial autocorrelation such as the Moran's I or Geary's Ratio. Both methods would allow you to measure both the proximity of...
1655
Monica Palaseanu-Love...
monica.palaseanu-love...
Aug 7, 2004 11:51 am
Hi, It is true that the general consensus is that you need at least 50 to 100 points for a stable semi-variogram, but myself i bent this rule a little and i...
1656
Koen Hufkens
koen.hufkens@...
Aug 7, 2004 11:52 am
... A figure would be nice to interpretate the situation. Put it on some website, this makes it easier for people to access it if they want to and links are...
1657
Mark Coleman
mark@...
Aug 9, 2004 7:50 am
Greetings, I apologize in advance if this question is less "coherent"; or well-formed than I would prefer, but I am hoping someone on the list can offer...
1658
Gregoire Dubois
gregoire.dubois@...
Aug 9, 2004 7:50 am
Good day everyone ! "It is true that the general consensus is that you need at least 50 to 100 points for a stable semi-variogram, but myself i bent this rule...
1659
xhy
yangxhzsu
Aug 10, 2004 1:12 pm
Dear all, I intended to seek for scale-dependent correlations among soil properties by performing a multivariate geostatistical analysis (factorial kriging...
1660
Susumu Tanimura
umusus@...
Aug 16, 2004 8:34 am
Hello everyone. This is a question about teh moment method of empirical Bayesian estimation. Does anyone tell me why the weighted sample variance can set the ...
1661
Gregoire Dubois
gregoire.dubois@...
Aug 19, 2004 11:28 am
Dear all, It is with a great pleasure that I just added a few minutes ago a tool called E{Z}-Kriging on the AI-GEOSTATS web server (see the FAQ or the main...
1662
Syed Abdul Rahman Shi...
sshibli@...
Aug 19, 2004 11:28 am
Dear List members, Yes, this might be statistical heresy but would anyone be able to provide any references that give a probabilistic treatment (i.e. instead...
1663
Ruben Roa Ureta
rroa@...
Aug 23, 2004 3:01 pm
Hi: Has anyone obtained the profile likelihood of the mean (strict stationarity for simplicity) of the stochastic process, with any geostatistical software?...
1664
Isobel Clark
drisobelclark@...
Aug 23, 2004 3:01 pm
Syed Try "When are relative variogams useful in geostatistics?" Journal of the International Association of Mathematical Geology, Vol 17, pp.693-702 (1085b). ...
1665
Tony Chase
tonyc@...
Aug 24, 2004 12:36 pm
Dear all: We all use the commonly-known variogram models(such as gauss, exp and spherical,etc.) to do variogram modelling and kriging since we know these...
1666
Edzer J. Pebesma
e.pebesma@...
Aug 26, 2004 8:14 am
... By using your second plotting approach, or by modifying the source. ... lset(theme = col.whitebg()) For those interested: plot(jgv, ...) calls the function...
1667
bob sandefur
rsandefur@...
Aug 26, 2004 8:15 am
Hi- I was plotting some variograms with gstat in R with: s <- whar=="CUT.67" xv<-x[s] yv<-y[s] zv<-z[s] gv<-CUT[s] jdf<-data.frame(xv,yv,zv,gv) jgs<-gstat(id =...
1668
kai.zosseder@...
Aug 30, 2004 11:37 am
Hello list, I´m dealing with organic contamination in soil and groundwater and have some questions: 1. I get a quite good fitting with an omnidirectional...
1669
Monica Palaseanu-Love...
monica.palaseanu-love...
Aug 30, 2004 1:03 pm
Hi, I am dealing with PAHs contamination data in soils as well. In my experience, depending where this contamination is (i mean if it is an old industrial...
1670
Edzer J. Pebesma
e.pebesma@...
Aug 30, 2004 1:03 pm
Monica Palaseanu-Lovejoy wrote: ... Thanks for sharing your experiences with us, Monica. I wondered if you published your results somewhere, because there is,...
1671
Glover, Tim
ntglover@...
Aug 30, 2004 1:03 pm
Just a quick point on PAHs - are you aware that there is a general background concentration of PAHs everywhere? These come from air-deposition of PAHs from...
1672
Monica Palaseanu-Love...
monica.palaseanu-love...
Aug 30, 2004 1:04 pm
Hi, This is more or less the subject of my PhD thesis i hope to submit this January 2005 ;-)) I am working with small sample size (around 300 values). ...
1673
Isobel Clark
drisobelclark@...
Aug 30, 2004 1:05 pm
Hello Kai ... Your kriging standard deviation is a direct consequence of the semi-variogram model which you fitted. This, of course, is a direct reflection of...
1674
Monica Palaseanu-Love...
monica.palaseanu-love...
Aug 30, 2004 2:02 pm
Hi, Yes i know. For these reasons i have suggested to look if the data does not come from 2 different populations. Also, usually the background is not above...
1675
Njeri Wabiri
nwabiri@...
Aug 31, 2004 9:37 am
Hello list, I am looking at the possible ways of defining variograms for random sets based on distance metrics(the idea of metric and functional spaces) ...
1676
Soeren Nymand Lophaven
snl@...
Aug 31, 2004 9:38 am
Based on my relatively limited knowledge on Bayesian kriging I have a few comments to the current discussion: - Bayesian kriging gives better predictions than...
1677
Soeren Nymand Lophaven
snl@...
Aug 31, 2004 11:38 am
Thank you Gregoire for your input. As far as I understand there is various types of Bayesian kriging, within a general framework, according to how you specify...
1678
Gregoire Dubois
gregoire.dubois@...
Aug 31, 2004 11:38 am
Hello everyone, I'm profiting from the discussion about Bayesian kriging to update my knowledge. Are there not various types of Bayesian kriging? I remember...
1679
Monica Palaseanu-Love...
monica.palaseanu-love...
Aug 31, 2004 3:32 pm
Hi, Well, the bayesian kriging methods you are describing are somewhat different than what i am using. I am using R and geoR by Ribeiro and Diggle (2001). Web...
