R version 2.9.0 Under development (unstable) (2009-02-02 r47821)
Copyright (C) 2009 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> # fields, Tools for spatial data
> # Copyright 2004-2007, Institute for Mathematics Applied Geosciences
> # University Corporation for Atmospheric Research
> # Licensed under the GPL -- www.gpl.org/licenses/gpl.html
> 
> 
> library( fields)
Loading required package: spam
Package 'spam' is loaded. Spam version 0.15-2 (2008-09-10).

Type demo( spam) for some demos, help( Spam) for an overview of this package.


Attaching package: 'spam'


	The following object(s) are masked from package:base :

	 backsolve,
	 forwardsolve,
	 kronecker 

 Try help(fields) for an overview of this library 
> 
> # tests of predict.se
> # against direct linear algebra 
> 
> options( echo=FALSE)
testing:  Amatrix vs. predict
    PASSED test at tolerance  1e-08
testing:  Marginal predict.se
    PASSED test at tolerance  1e-08
testing:  Marginal predict.se fixed 
    PASSED test at tolerance  1e-08
testing:  Full covariance predict.se
    PASSED test at tolerance  1e-08
testing:  Marginal standard Cond. Sim.
    PASSED test at tolerance  0.01
testing:  Full covariance standard Cond. Sim.
    PASSED test at tolerance  0.02
testing:  Amatrix vs. predict
    PASSED test at tolerance  1e-08
testing:  Weighted case and exact for ozone2 full 
cov
    PASSED test at tolerance  1e-08
testing:  Conditional simulation marginal se for grid
    PASSED test at tolerance  0.005
all done testing predict.se 
> 
> proc.time()
   user  system elapsed 
 66.299   6.052 109.332