Hi Perry, I am assuming you are using the latest version of S-GeMS. In the sgsim function, there is an "histogram" tab where you can specify the target histogram you want to reproduce (like in Gslib the normal score transform and back-transform will be performed automatically inside the program, and you can choose among power, exponential and hyperbolic models for the lower and upper tail extrapolation). Cheers, Pierre Pierre Goovaerts Chief Scientist at BioMedware 516 North State Street Ann Arbor, MI 48104 Voice: (734) 913-1098 (ext. 8) Fax: (734) 913-2201 http://home.comcast.net/~goovaerts/
________________________________ From: Collier, Perry (TS) [mailto:[EMAIL PROTECTED] Sent: Thu 3/2/2006 6:42 PM To: AI Geostats mailing list Subject: [ai-geostats] Quick question about S-GeMS SGS simulation Quick question about S-GeMS SGS simulation: I had a go at producing an SGS simulation in S-GeMS, but the result was Gaussian (ie: not back transformed as GSLIB SGSIM.exe does) - can anyone advise how to back-transform the simulation in S-GeMS? What about tail extrapolation - how does S-GeMS handle that - there's no place in the user interface to put in any parameters as per GSLIB. I'm light years away from being an expert in this stuff, so it's likely I've missed something obvious... Cheers Perry Collier Senior Geologist Rio Tinto Technical Services Phone: +61 7 3327 7676 Mobile: 0408 015 837 -----Original Message----- From: Pierre Goovaerts [mailto:[EMAIL PROTECTED] Sent: Friday, 3 March 2006 7:50 AM To: Mach Nife; AI Geostats mailing list Subject: RE: [ai-geostats] Re: Software for Automatic Semivariogram Estimation Hi, They are currently writing a book that would be similar to Gslib user manual but tailored to S-GeMS features. In the meantime, you can find some help in the user manual available at http://sgems.sourceforge.net/doc/sgems_manual.pdf Cheers, Pierre Pierre Goovaerts Chief Scientist at BioMedware 516 North State Street Ann Arbor, MI 48104 Voice: (734) 913-1098 (ext. 8) Fax: (734) 913-2201 http://home.comcast.net/~goovaerts/ ________________________________ From: Mach Nife [mailto:[EMAIL PROTECTED] Sent: Wed 3/1/2006 3:36 PM To: Pierre Goovaerts; AI Geostats mailing list Subject: RE: [ai-geostats] Re: Software for Automatic Semivariogram Estimation It would be very nice if there would be a tutorial on how to use the variogram modeler. machnife --- Pierre Goovaerts <[EMAIL PROTECTED]> wrote: > Hi Susan, > > I would recommend the Stanford Geostatistical Modeling Software > (S-GeMS) that is public domain and that I use in all my short courses > (some of your colleagues have actually be trained by me). The software > can be downloaded from http://pangea.stanford.edu/~nremy/GEMS/ > > Cheers, > > Pierre > > Pierre Goovaerts > Chief Scientist at BioMedware > 516 North State Street > Ann Arbor, MI 48104 > Voice: (734) 913-1098 (ext. 8) > Fax: (734) 913-2201 > http://home.comcast.net/~goovaerts/ > > ________________________________ > > From: Hohner, Susan [mailto:[EMAIL PROTECTED] > Sent: Tue 2/28/2006 1:28 PM > To: AI Geostats mailing list > Subject: RE: [ai-geostats] Re: Software for Automatic Semivariogram > Estimation > > > > Yikes! > > > > I was working through the tutorial for the Geostatistical Analyst > Extension when this email discussion popped up. Any recommendations > for a "traditional geostatistics software package"? > > > > Thanks, > > Susan > > > > Susan Hohner, Senior Geographer > > Everglades Division, Mail Stop 4440 > > South Florida Water Management District > > 3301 Gun Club Road, West Palm Beach, FL 33406 > > (561) 682-6801 phone > > (561) 682-0100 fax > > [EMAIL PROTECTED] > > http://www.sfwmd.gov > > > > ________________________________ > > From: Chaosheng Zhang > [mailto:[EMAIL PROTECTED] > Sent: Tuesday, February 28, 2006 12:25 PM > To: AI Geostats mailing list > Subject: Re: [ai-geostats] Re: Software for Automatic Semivariogram > Estimation > > > > Dear all, > > > > I have the same concerns with ArcGIS Geostatistical Analyst Extension > (v.9.1). I would use a traditional geostatistics software package to > fit the variogram models in a very traditional way, and input the > parameters to ArcGIS for kriging. It seems that ArcGIS has its own > reasons to show variograms in a non-traditional way, but I find it > almost impossible to fit the variograms mannually. You can change the > parameters, but it is very hard to see how well they fit. By the way, > you can change the lag distance or interval in ArcGIS (it is called > "lag size" there). > > > > Cheers, > > > > Chaosheng > > ------------------ > Dr. Chaosheng Zhang > Lecturer in GIS > Department of Geography > National University of Ireland, Galway IRELAND > Tel: +353-91-492375 > Fax: +353-91-495505 > E-mail: [EMAIL PROTECTED] > Web1: www.nuigalway.ie/geography/zhang.html > Web2: www.nuigalway.ie/geography/gis > > > > > > > > * By using the ai-geostats mailing list you agree to > follow its rules > ( see > http://www.ai-geostats.org/help_ai-geostats.htm ) > > * To unsubscribe to ai-geostats, send the following in the subject or > in the body (plain text format) of an email message to [EMAIL PROTECTED] > > Signoff ai-geostats __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
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