[R-sig-Geo] Presentation and a "few" Questions (geoR)

[María Eugenia Utgés]

 Hello Everyone
I am making my doctorate in biology at the University of Buenos Aires,
Argentina.
I am working on survival and dispersal of the south american fruit fly
(Diptera: Tephritidae), a fruit pest mainly of citrics.
To do so I have field dispersal data (with its x,y coordinates) and have
already perform some spatial analysis with geoR.
My specific questions are:
1- Data must show normality?  What to do if even transformed data does not
adjust?
2- How do I interpret the cross-validation results?
3- How do I know if I need to take into account anisotropy?
4- When to end the iteration of likfit? till stable values of estimated
parameters?
5- Is it recommended to present the image of the kriging AND the one
representing variances? how do I generate the latter?
6- Do the kriging image values have a unit, or are they arbitrary?
7- Finally, if you had to present the results (in a paper for example)
what results/data/graphics would you choose?

Hoping to recieve lots(!) of answers,
María Eugenia



Lic. María Eugenia Utgés
Bióloga
Lab. Genética de Poblaciones Aplicada (GPA), Pab. 2, 4to piso, Lab. 105,
Depto. Ecología, Genética y Evolución (EGE)
Fac. Cs. Exactas y Naturales (FCEyN)
Universidad de Buenos Aires (UBA)
Ciudad Universitaria,
Buenos Aires, Argentina

Tel.: 4576-3300, int 218