AI-GEOSTATS: Anisotropy with varying Range and Sill
Hi AI-Geostats member I have an Anisotropic Spatial Data Set on which,Sill and Range (and also nugget effect) are both varying with direction, I need a method or refrence article for modelling the variogram structure of such data in 2-Dim. space. Please introduce a method and/or a reference article, if you know. Yours Sincerely: Y. Waghei Dep.of Biostatistics Tarbiat Modarres Un. Tehran Tel:8011001-3872 ___ Visit http://www.visto.com. Find out how companies are linking mobile users to the enterprise with Visto. -- * To post a message to the list, send it to [EMAIL PROTECTED] * As a general service to the users, please remember to post a summary of any useful responses to your questions. * To unsubscribe, send an email to [EMAIL PROTECTED] with no subject and "unsubscribe ai-geostats" followed by "end" on the next line in the message body. DO NOT SEND Subscribe/Unsubscribe requests to the list * Support to the list is provided at http://www.ai-geostats.org
Re: AI-GEOSTATS: Anisotropy with varying Range and Sill
Any basic Geostatistics book will show you models with varying ranges and sills with direction. Except mine. We believe that sill varying with direction is a symptom of deeper problems such as non-stationarity, trend, discontinuities, etc etc. Isobel Clark http://uk.geocities.com/drisobelclark Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie -- * To post a message to the list, send it to [EMAIL PROTECTED] * As a general service to the users, please remember to post a summary of any useful responses to your questions. * To unsubscribe, send an email to [EMAIL PROTECTED] with no subject and "unsubscribe ai-geostats" followed by "end" on the next line in the message body. DO NOT SEND Subscribe/Unsubscribe requests to the list * Support to the list is provided at http://www.ai-geostats.org
Re: AI-GEOSTATS: Anisotropy with varying Range and Sill
On Monday, September 10, 2001, at 12:19 PM, Isobel Clark wrote: > Any basic Geostatistics book will show you models with > varying ranges and sills with direction. > > Except mine. We believe that sill varying with > direction is a symptom of deeper problems such as > non-stationarity, trend, discontinuities, etc etc. I'd be a bit suspicious if the sill changes in the X and Y directions, but probably not as much if comparing the horizontal sill to a (normally) different vertical value, due to the gravity component. Syed -- * To post a message to the list, send it to [EMAIL PROTECTED] * As a general service to the users, please remember to post a summary of any useful responses to your questions. * To unsubscribe, send an email to [EMAIL PROTECTED] with no subject and "unsubscribe ai-geostats" followed by "end" on the next line in the message body. DO NOT SEND Subscribe/Unsubscribe requests to the list * Support to the list is provided at http://www.ai-geostats.org