Re: AI-GEOSTATS: variogram and fractals

2009-04-01 Thread seba
variable that is distributed NOT on a transect, but rather at discontinuous (i.e. random) locations in a 2D study area? Thank you, Gustavo Vasques --- Em qua, 11/3/09, seba sebastiano.trevis...@libero.it escreveu: De: seba sebastiano.trevis...@libero.it Assunto: AI-GEOSTATS: variogram

Re: AI-GEOSTATS: variogram and fractals

2009-03-18 Thread Syed Shibli
Hi Seba It's truly hard to generalise, since the techniques to infer these Hurst exponents (or fractal D) themselves are very sensitive to the log-log slope. But you are correct some logs can, and do, exhibit nested structures, which contradict the scale invariance that we are assuming with an

Re: AI-GEOSTATS: variogram and fractals

2009-03-11 Thread Gregoire Dubois
Ciao Sebastiano, I did work a bit on the issue with Peter (I guess he will get back to you with even more references) and found the following papers useful: Bruno, R., Raspa, G., 1989. Geostatistical characterization of fractal models of surfaces. In: Armstrong, M. (Ed.), Geostatistics. Kluwer

Re: AI-GEOSTATS: variogram and fractals

2009-03-11 Thread Syed Shibli
at discontinuous (i.e. random) locations in a 2D study area? Thank you, Gustavo Vasques --- Em qua, 11/3/09, seba sebastiano.trevis...@libero.it escreveu: De: seba sebastiano.trevis...@libero.it Assunto: AI-GEOSTATS: variogram and fractals Para: ai-geostats@jrc.it Data: Quarta-feira, 11