[R-sig-Geo] warnings()

[kad]

Dear all, 
I see two  warnings and I dont know what I must do. 
I want to make a ordinary kriging. 
I use the package automap for my report .do you help me?Thanks



1) In fit.variogram(object, model, fit.sills = fit.sills,  ... :
  valeur d'argument hors intervalle dans 'bessel_k'

2) In autofitVariogram(ANGAR ~ 1, r) :
  Some models where removed for being either NULL or having a negative
sill/range/nugget, 
        set verbose == TRUE for more information


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