Figure 8From: A spatially-explicit count data regression for modeling the density of forest cockchafer (Melolontha hippocastani) larvae in the Hessian Ried (Germany) The qqplot of randomized quantile residuals for a negative binomial model for quantifying larva density (Eq.8.51) using 1 st order derivatives in the penalty (Duchon[1977]) and reducing the dimension of the spatial trend function ( edf = 93.38). Back to article page