R: AI-GEOSTATS: need to refrence about ANISOTROPY

2013-01-23 Thread sebastiano.trevis...@libero.it
Dear Yadollah Well, there are many nice books (e.g. Geostatistics for natural resources evaluation), also the work done in the project Intamap is hihgly interesting. Anyway, one problem of anisotropy is that a coefficient of anisotropy is defined only in case of geometric anisotropy (same

R: Re: R: AI-GEOSTATS: need to refrence about ANISOTROPY

2013-01-23 Thread sebastiano.trevis...@libero.it
...@gmail.comalibabaei.ya...@gmail.com Ogg: Re: R: AI-GEOSTATS: need to refrence about ANISOTROPY p { margin: 0px; }p { margin: 0px; }-- Dear All On anisotropy computation, the attached paper might be quite helpful. Thanks Abedini On Wed, Jan 23, 2013 11:52 AM, sebastiano.trevis...@libero.it

R: RE: AI-GEOSTATS: Interpolating mining presence only data

2010-12-14 Thread sebastiano.trevis...@libero.it
Ok, in this case surface morphology could be very useful (i.e. possible strong signature of antrophic activity). But you need high resolution dems! Sebas http://posta64a.mailbeta.libero.it/cp/ps/Main/WindLayout?d=libero. itu=sebastiano.trevisanit=116124102d823104# Messaggio originale Da:

R: AI-GEOSTATS: Interpolating mining presence only data

2010-12-14 Thread sebastiano.trevis...@libero.it
HiAn idea could be to calculate a kernel density from the sites and see if there is a correlationwith lithology. The dem could be useful if there is some correlation between morphology and themining sites i.e.: 1) are the mining sites correlated with the geo-structural and geomorfological

AI-GEOSTATS: generalized least squares

2009-03-27 Thread sebastiano.trevis...@libero.it
Dear list members Before to post the references and other questions about fractals\time series and variograms, related to the my last question on the mailing list, unfortunately I have another geostatistical issue. I tryed to use an interative approach (in R with gstat) to estimate trend