RE: AI-GEOSTATS: moving averages and trend

2010-02-02 Thread Cornford, Dan
Sebastiano, I am struggling to understand why you are interested in doing trend + residual separation? There can be no unique decomposition of a data set into 'trend' and 'residual', it is a judgement about what model you feel is most appropriate given your prior beliefs and observations

Re: AI-GEOSTATS: moving averages and trend

2010-02-02 Thread Paul Hiemstra
Cornford, Dan wrote: Sebastiano, I am struggling to understand why you are interested in doing trend + residual separation? There can be no unique decomposition of a data set into ‘trend’ and ‘residual’, it is a judgement about what model you feel is most appropriate given your prior

Re: AI-GEOSTATS: moving averages and trend

2010-02-02 Thread seba
Hi Paul Well, in some way regression kriging is not too much different to kriging with external drift. My question is more directed to kernel smoothing techniques than to classical geostatistical tools. I should have read the mentioned paper some time ago...I'll go to give another look.

Re: AI-GEOSTATS: moving averages and trend

2010-02-02 Thread Pierre Goovaerts
Hello, Factorial kriging is not very sophisticated, it's just a slight variant of kriging that requires the modification of just a few lines of codes. Anyways, I just posted a program to perform factorial kriging analysis in the download section of my website. I hope your grid is not too big,