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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> 
> 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:  Comparing FORTRAN grid eval to matrix vector multiplication
PASSED test at tolerance  1e-08
Testing:  testing PredictSurface and predict.fastTps
PASSED test at tolerance  1e-08
Testing:  testing PredictSurface with slower mKrig predict
PASSED test at tolerance  1e-08
Testing:  predict with ynew
PASSED test at tolerance  1e-08
Testing:  predictSurface with ynew
PASSED test at tolerance  1e-08
> #
> 
> proc.time()
   user  system elapsed 
  0.563   0.039   0.592