Fig. 8
From: Large scale random fields generation using localized Karhunen–Loève expansion
Correlation function of the generated random field for \(s_1=s_2=L\) and \({\mathbf {t}}\in [0.5L,1.5L]^2\), on the left, and absolute difference with the theoretical correlation on the right. The blue dotted lines delimit the sub-domains