# fields  is a package for analysis of spatial data written for
# the R software environment .
# Copyright (C) 2017
# University Corporation for Atmospheric Research (UCAR)
# Contact: Douglas Nychka, nychka@ucar.edu,
# National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80307-3000
#
# 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    
printGCVWarnings<- function( Table, method="all"){
 ind<- Table$Warning
 if( method == "all"){
 	kIndex<- 1:6
 }
 else{
    kIndex<- match( method,c("GCV",
                          "GCV.model",
                          "GCV.one",
                          "RMSE",
                          "pure error",
                         "REML")
                   )
      }
 methodList<- c(
 "(GCV) Generalized Cross-Validation ",
 "(GCV.model) Generalized Cross-Validation on replicate means ",
 "(GCV.one) Generalized Cross-Validation on individual observations ",
 "(RMSE) Matching estimate of sigma to supplied rmse ",
 "Matching estimate of sigma to that from replicated observations",
 "(REML) Restricted maximum likelihood "
  )
 if( any( ind[kIndex])){
 	cat("Warning: ", fill=TRUE)
 	cat("Grid searches over lambda (nugget and sill variances) with  minima at the endpoints: ", fill=TRUE) }
 for( k in kIndex){
 if( ind[k]){
    whichEnd<- ifelse(Table[k,2],"left","right")
 	cat( " ", methodList[k], fill =TRUE)
 	cat( "   minimum at ", whichEnd, "endpoint",
 	                " lambda  = ", Table[k,6] ,
    "(eff. df=", Table[k,7] , ")", fill = TRUE )
 	     }
 }	     
 
}
