Message-ID: <48EE0808.6000300@uni-muenster.de>
Date: 2008-10-09T13:32:56Z
From: Edzer Pebesma
Subject: GLS spatial model-- range error
In-Reply-To: <847282.60187.qm@web26003.mail.ukl.yahoo.com>
I don't I think the authors of nlme are on this list, but I looked at
the help of corExp, and that suggests that using the argument
correlation = corExp(form = ~x+y)
will be more useful that what you did.
--
Edzer
jofre carnicer cols wrote:
> Hello,
>
> I am computing a gls spatial model:
>
> require(nlme)
>
> gls.exp<-gls(S1 ~ X2TPall + tmngem + tmaxjlm + arbdenkm + prat_herm +
> arbclakm + conreukm, data=snouter.df, correlation=corExp(form~X+Y), na.action=na.omit)
>
> and obtain the following error:
>
> Error en Initialize.corSpatial(X[[1L]], ...) :
> Range must be > 0 in "corSpatial" initial value
>
> I have checked CorExp, gls, and CorClasses help but couldn't find how to solve this error. Any help is welcome.
>
> Many thanks in advance,
>
> Jofre
>
>
>
>
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--
Edzer Pebesma
Institute for Geoinformatics (ifgi), University of M?nster,
Weseler Stra?e 253, 48151 M?nster, Germany. Phone: +49 251
8333081, Fax: +49 251 8339763 http://ifgi.uni-muenster.de/
http://www.springer.com/978-0-387-78170-9