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nlme (version 3.1-99)

corClasses: Correlation Structure Classes

Description

Standard classes of correlation structures (corStruct) available in the nlme library.

Arguments

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