R version 3.3.2 (2016-10-31) -- "Sincere Pumpkin Patch"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-apple-darwin13.4.0 (64-bit)

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> # fields, Tools for spatial data
> # Copyright 2004-2011, Institute for Mathematics Applied Geosciences
> # University Corporation for Atmospheric Research
> # Licensed under the GPL -- www.gpl.org/licenses/gpl.html
> 
> 
> 
> # tests of predictSE
> # against direct linear algebra 
> 
> library(fields)
Loading required package: spam
Loading required package: grid
Spam version 1.4-0 (2016-08-29) is loaded.
Type 'help( Spam)' or 'demo( spam)' for a short introduction 
and overview of this package.
Help for individual functions is also obtained by adding the
suffix '.spam' to the function name, e.g. 'help( chol.spam)'.

Attaching package: 'spam'

The following objects are masked from 'package:base':

    backsolve, forwardsolve

Loading required package: maps
> options( echo=FALSE)
Testing:  Amatrix vs. predict
PASSED test at tolerance  1e-08
Testing:  Marginal predictSE
PASSED test at tolerance  1e-08
Testing:  comparing Omega
PASSED test at tolerance  1e-08
PASSED test at tolerance  1e-08
PASSED test at tolerance  1e-08
Testing:  test of formula with explicit d and c
PASSED test at tolerance  1e-08
Testing:  Krig function and direct formula
PASSED test at tolerance  1e-08
Testing:  new predict formula and direct formula
PASSED test at tolerance  1e-08
Testing:  New se _function_ and old Krig _function_
PASSED test at tolerance  1e-08
Testing:  Benchmark of formula
PASSED test at tolerance  1e-08
Testing:  Benchmark of formula mKrig coefs
PASSED test at tolerance  1e-08
Testing:  test function with several locations Krig mKrig functions
PASSED test at tolerance  1e-08
> proc.time()
   user  system elapsed 
  0.656   0.044   0.691