Hi! I want to use a poisson regression for my data with adjusting for spatial autocorrelation. I have tried to do it by using GLIMMIX proc glimmix data=sasdata.all; nloptions maxiter=500; model ABUND=logP logN/ dist=poisson link=log solution; random _residual_/type=sp(exp)(lat_dd lon_dd) subject=intercept; run; There is a warning message: "Obtaining minimum variance quadratic unbiased estimates as starting values for the covariance parameters failed." What should I try to make this work? Thank you! Feng Zhang
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