R Under development (unstable) (2024-06-26 r86840 ucrt) -- "Unsuffered Consequences"
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> #
> # fields  is a package for analysis of spatial data written for
> # the R software environment.
> # Copyright (C) 2022 Colorado School of Mines
> # 1500 Illinois St., Golden, CO 80401
> # Contact: Douglas Nychka,  douglasnychka@gmail.edu,
> #
> # This program is free software; you can redistribute it and/or modify
> # it under the terms of the GNU General Public License as published by
> # the Free Software Foundation; either version 2 of the License, or
> # (at your option) any later version.
> # This program is distributed in the hope that it will be useful,
> # but WITHOUT ANY WARRANTY; without even the implied warranty of
> # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> # GNU General Public License for more details.
> #
> # You should have received a copy of the GNU General Public License
> # along with the R software environment if not, write to the Free Software
> # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
> # or see http://www.r-project.org/Licenses/GPL-2
> ##END HEADER
> ##END HEADER
> 
> suppressMessages(library( fields ))
> options( echo=FALSE)
Testing:  Likelihood Values optim and the fast return
PASSED test at tolerance  1e-08
Testing:  Likelihood Values summary and optim
PASSED test at tolerance  1e-08
Testing:  Likelihood Values summary and direct mKrig call
PASSED test at tolerance  1e-08
Testing:  ... and sigma^2.MLE
PASSED test at tolerance  1e-08
Testing:  consistency of Likelihood values
PASSED test at tolerance  1e-08
Testing:  grid search with and w/o profile
PASSED test at tolerance  1e-08
Testing:  crude test of maxmimum
PASSED test at tolerance  1e-08
Testing:  Testing MLE from spatialProcess 
PASSED test at tolerance  1e-05
Testing:  spatialProcess finding MLE 
PASSED test at tolerance  1e-08
Testing:  spatialProcess given MLE 
PASSED test at tolerance  1e-05
Testing mKrigMLEJoint against true values
PASSED test at tolerance  0.006
PASSED test at tolerance  0.02
PASSED test at tolerance  0.02
Testing mKrigMLEJoint  with REML against true values
PASSED test at tolerance  0.007
PASSED test at tolerance  0.01
PASSED test at tolerance  0.01
Testing mKrigMLEJoint  with REML FALSE  against true values
PASSED test at tolerance  0.02
PASSED test at tolerance  0.02
PASSED test at tolerance  0.01
all done with mKrigMLEGrid tests
> 
> 
> 
> proc.time()
   user  system elapsed 
   4.93    0.51    5.39