I'm trying to use eyefit for a task and get some answers from my variogram. I am having some trouble figuring out whether I have made my nested variogram properly. This task is written as:
"use a nested variogram model consisting of a nugget
effect and a spherical variogram"
All I could think of and find was the following:
variogram <- variog(Mg, uvec = seq(0, 400000, l = 11))
e.fit <- eyefit(variog(Mg, max.dist = 400000))
##Mg is my data for Magnesium locations with x and y coords.
Within eyefit, I do not change anything except from Gaussian to spherical, hit save, and then close it.
I cannot show a picture of my resulting graph with a line because I am a new user.
I would like to know if this is proper and then if correct:
-Where can I find the parameters of the variogram?
-Where can I find the formula of this nested variogram?
Thanks in advance for your help.