[R-sig-Geo] gstat error

[Dave Depew]

I suppose it might be, although I expanded the neighborhood just to be 
sure. I wonder if it isn;t the NA values that are in the grid

Edzer Pebesma wrote:
> Is it possible that you're using kriging in a local neighbourhood 
> where the predictor is constant?
> -- 
> Edzer
>
> Dave Depew wrote:
>> Hi
>> I'm trying to run some universal kriging, and have not experienced 
>> this error before.
>> I've removed duplicate data locations using the remove.duplicates 
>> command. The data set runs fine if the formula is set as ordinary 
>> kriging, but adding in a predictor (which is already known at each 
>> grid location)
>> gives
>>
>> "lufactor.c", line 207: singular matrix in function m_inverse()
>> Error in predict.gstat
>>
>> Any ideas?
>>
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>