Dear R users

 

I use the following design : 3 complete blocks, in each of them several
varieties are randomly planted.

I'd like to model a gradient along each block

 

To do that, lme function is quite useful, with cor structure :
correlation=corAR1()

The model is a crossed random effect spatial model.

 

To avoid using lme with such a model, I'd like to use lmer function. 

 

My question is : how do you model the corr structure (ie AR(1)) in the
lmer function ?

 

Thanks

 

F. Duyme

 


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