Hello Lyndon,
a couple of things you might try - for starters, the use of spatial
correlation structures is documented in Pinheiro and Bates (2002)
"Mixed Effects Models in S and S-Plus" from Springer-Verlag. So, you
should try that. Secondly, it's difficult to provide useful advice in
the absen
Hi,
I'm fitting a relatively simple growth model to some forest plot data. Two
species of trees were planted in different mixtures in 10 (nearly-adjacent)
plots and measured on four occasions over 10 years. The model is
constructed in terms of the diameter increments (per year; DI) in the 3
in
