[R] geoR question from new R user

[Sharon Lambert]

THANKS!
This was exactly the problem.

Sharon

----- Original Message -----
From: Roger Peng <rpeng at stat.ucla.edu>
Date: Monday, February 10, 2003 8:31 pm
Subject: Re: [R] geoR question from new R user

> Is `D' the original matrix or a `geodata' object?  You need to 
> assign the
> output of `as.geodata to another variable and pass that to 
> `variog'.  For
> example,
> 
> B <- as.geodata(D, coords.col=1:2, data.col=3)
> variog(B, option = "cloud", max.dist = 1)
> 
> It seems like the problem is that you're passing the matrix `D' into
> `variog'.
> 
> -roger
> _______________________________
> UCLA Department of Statistics
> rpeng at stat.ucla.edu
> http://www.stat.ucla.edu/~rpeng
> 
> On Mon, 10 Feb 2003, Sharon Lambert wrote:
> 
> > Hi,
> > 
> > I'm a new R user. My goal is to do a variogram using geoR.
> > I started by trying to do the example in the geoR Illustrative 
> Session 
> > using my own data.
> > 
> > I am able to read in my Ascii data using: D <- 
> matrix(scan("file.dat", 
> > n=530*3), 530,3, byrow=TRUE).
> > 
> > Then I use: as.geodata(D, coords.col=1:2, data.col=3) to make 
> the 
> > object D geodata.
> > 
> > I check the descriptive statistics, and my data file appears to 
> be in 
> > order.
> > 
> > But when I try the following command:  cloud1<- variog(D, 
> > option="cloud", max.dist=1), I get this error:
> >     Error in array(x, c(length(x), 1), if (!is.null(names(x))) list
> > (names(x),  : 
> >         attempt to set an attribute on NULL
> > 
> > I get that same error message when I try different arguments 
> with the 
> > variog command. 
> > 
> > Can someone help?
> > 
> > Thanks,
> > 
> > Sharon
> > 
> > ______________________________________________
> > R-help at stat.math.ethz.ch mailing list
> > http://www.stat.math.ethz.ch/mailman/listinfo/r-help
> > 
> 
>