[STATSGRASS] Another problem with kriging (gstat)

[Edzer J. Pebesma]

Jarek, thanks for the picture. Is it possible that data locations 
sometimes coincide with grid cell centres, and sometimes not? Is the 
white oval meant to be there, and is it missing valued? We still know 
very little about your problem and setup.
--
Edzer

Jarek Jasiewicz wrote:
> Edzer J. Pebesma napisał(a):
>> Jarek Jasiewicz wrote:
>>
>>> After kriging (in fact, with strongly chaotic data) I recived 
>>> atrefacts (noisy elipses with values far from data range) in some 
>>> places.
>>>
>>> For now I can't place image on www but if somebody is intersting, I 
>>> can send image with addational patameters about kriging made
>>
>> This may be caused by several factors; without more knowledge about 
>> your analysis we can't say anything. One possible reason is 
>> observations that are very close in space (in combination with no 
>> nugget effect).
>>
>> Best regards,
>> -- 
>> Edzer
> no, nugget is very LARGE (data are chaotic, almost random), in my 
> opinion data are not to do kriging, the aim is slighty different, I 
> only interested in reasons of such element like in attachment
>
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