AI-GEOSTATS: Interpretation of nugget effect

2003-08-19 Thread Peter Pinn
Hello everybody, I have several (maybe too simple) questions on geostatistics: 1. I would like to know where I can find any kind of detailed interpretation guide for the nugget effect. I know how to describe the nugget effect in my words, but I don´t know how do it in scientific english. 2. I

Re: AI-GEOSTATS: Interpretation of nugget effect

2003-08-19 Thread sebastiano trevisani
Hello Peter For that regard the definition of nugget effect you can read a good explanation in "statistics for spatial data"(author Noel A. C. Cressie). I think that you can find there all you need. Sebastiano Trevisani Ph.D. Padova University I At 01:48 PM 8/19/2003 +0200, Peter Pinn wrote: H

Re: AI-GEOSTATS: Interpretation of nugget effect

2003-08-19 Thread Ruben Roa Ureta
> Hello everybody, > > I have several (maybe too simple) questions on geostatistics: > > 1. I would like to know where I can find any kind of detailed > interpretation guide for the nugget effect. I know how to describe the nugget effect in my words, but I don´t know how do it in scientific english

AI-GEOSTATS: robust kriging and indentifying outliers in soil data

2003-08-19 Thread Monica Palaseanu-Lovejoy
Hi, I am working on a set of soil data - pollution analysis. The data is not spatially correlated because there are outliers into the data. Since the data came from an old industrial site i suspect that the outliers are linked with point source pollution. I am interested to find out which soft

AI-GEOSTATS: point pattern analysis/ R question

2003-08-19 Thread Juliann Aukema
Good afternoon. I realize this is slightly off-topic, but I thought it likely that someone on this list could help and we could take further discussion off-list. I have a mapped set of about 800 points in a Roughly rectangular plot and I would like to ask what is the distribution of th

Re: AI-GEOSTATS: robust kriging and indentifying outliers in soil data

2003-08-19 Thread Ruben Roa Ureta
> Hi, > > I am working on a set of soil data - pollution analysis. The data is > not spatially correlated because there are outliers into the data. > Since the data came from an old industrial site i suspect that the > outliers are linked with point source pollution. When i first started reading a

RE: AI-GEOSTATS: robust kriging and indentifying outliers in soil data

2003-08-19 Thread Rajive Ganguli, Ph.D.
A comment on dealing with outliers. Recently we worked on some placer gold data. Grades ranged from single digits to four digits. Obviously that created problems in modeling. So we decided to break up the data set based on magnitudes (for example and not how we did it, 0-50, 50-200, 200-800, >8