gianni,
what about subtracting 1 from your values, so you have 0,1,2,3,4 you also have the distribution of your values to consider, normal kriging assumes normally distributed data, you might be interested in indicator methods, such as indicator kriging, or multiple indicator kriging,
Regards Digby
----- Original Message ----- From: "gianni" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, April 21, 2005 6:24 AM
Subject: [ai-geostats] gslib postik and cpdf
Hi I'm italian student from Rome and i would want to give my excuses for my poor english in the first place.
I have a problem with the gslib, i would know how to postprocess the cpdf values that the ik3d gives when we use the categorical variables, because the postik seems to work only with continuous variables.
I have 1 categorical variable, with 5 possible outcomes s=1,2,3,4,5. I would allocate locations to the category with the largest p under the constraint of reproduction of global proportion. That is the Soares algorithm, but i I have chosen this one because this is the only i found (Goovaerts97) and you could suggest me another one. However I need some fortran libraries about that.
Let me do another question This variable is the transmissivity, and i deduced this 5 outcomes from very low to very high. How about using this information like a continuous variable in ik3d? How to fix the first threshold? If i fix the first zk=1 i have in every location the I(u;zk)=1.
Thanks for your time Regards
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