I have 108 counts taken from 36 field points. I took three counts from each point at different times, also, the 36 field points are divided in a altitude factor of three levels (12 points at each level). I have also six numerical independent variables measured at each count. I want to make a generalized linear model to see which of my independent variables contribute significantly to the counts observed (time is a factor of three levels).
I know that if I had only factors I would use a split-plot design to see differences among levels, where I know how to nest, but I have six numerical independent variables. Transform data to do a lm is not working, that´s why I am trying to use a
My question is, how can I nest my data in a