# Initialize.corStruct

##### Initialize corStruct Object

This method initializes `object`

by evaluating its associated
covariate(s) and grouping factor, if any is present, in `data`

,
calculating various dimensions and constants used by optimization
algorithms involving `corStruct`

objects (see the appropriate
`Dim`

method documentation), and assigning initial values for
the coefficients in `object`

, if none were present.

- Keywords
- models

##### Usage

```
# S3 method for corStruct
Initialize(object, data, …)
```

##### Arguments

- object
an object inheriting from class

`"corStruct"`

representing a correlation structure.- data
a data frame in which to evaluate the variables defined in

`formula(object)`

.- …
this argument is included to make this method compatible with the generic.

##### Value

an initialized object with the same class as `object`

representing a correlation structure.

##### References

Pinheiro, J.C., and Bates, D.M. (2000) "Mixed-Effects Models in S and S-PLUS", Springer.

##### See Also

##### Examples

```
# NOT RUN {
cs1 <- corAR1(form = ~ 1 | Subject)
cs1 <- Initialize(cs1, data = Orthodont)
# }
```

*Documentation reproduced from package nlme, version 3.1-145, License: GPL (>= 2) | file LICENCE*