corClasses: Correlation Structure Classes
Description
Standard classes of correlation structures (corStruct)
available in the nlme library.Value
Available standard classes:corAR1autoregressive process of order 1.corARMAautoregressive moving average process, with arbitrary
orders for the autoregressive and moving average components.corCAR1continuous autoregressive process (AR(1) process for a
continuous time covariate).corCompSymmcompound symmetry structure corresponding to a
constant correlation.corExpexponential spatial correlation.corGausGaussian spatial correlation.corLinlinear spatial correlation.corRatioRational quadratics spatial correlation.corSpherspherical spatial correlation.corSymmgeneral correlation matrix, with no additional
structure.