corClasses: Correlation Structure Classes
Description
Standard classes of correlation structures (corStruct)
available in the nlme package.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.References
Pinheiro, J.C., and Bates, D.M. (2000) "Mixed-Effects Models
in S and S-PLUS", Springer.See Also
corAR1, corARMA,
corCAR1, corCompSymm,
corExp, corGaus,
corLin,
corRatio, corSpher,
corSymm,
summary.corStruct