AI-GEOSTATS: Variowin equations and cross-validation

2001-04-09 Thread Juliann Aukema
Hi, Variowin/equation questions: I have fitted models using variowin and am now trying to plot them in other graphics programs. Vario2D produces a file that I can use to plot the experimental variograms, but in the modeling I get an equation like: gamma(h) = 14.2 + 6.399 Sph. 169.66(h) I am

Re: AI-GEOSTATS: Variowin equations and cross-validation

2001-04-09 Thread Sara Kustron
;[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, April 09, 2001 5:22 PM Subject: AI-GEOSTATS: Variowin equations and cross-validation > Hi, > > Variowin/equation questions: > > I have fitted models using variowin and am now trying to plot them in >

Re: AI-GEOSTATS: Variowin equations and cross-validation

2001-04-10 Thread Isobel Clark
Juliann Judging the fit of a model cannot be done from the summary statisics. See my 1986 paper "The Art of Cross Validation" (full reference at http://uk.geocities.com/drisobelclark/Publications.html) Better to use something like Noel Cressie's goodness of fit statistic which tests the semi-var

Re: AI-GEOSTATS: Variowin equations and cross-validation

2001-04-10 Thread Isobel Clark
AAgh, sprry people, Mark Burnett just pointed out that I missed a bit in the Web reference: http://uk.geocities.com/drisobelclark/resume/Publications.html Mea culpa Isobel Clark Do You Yahoo!? Get your free @yahoo.co.uk address at ht