Description Usage Arguments Details Value Note Author(s) See Also Examples

Returns the variance-covariance matrix of the main parameters of a fitted `addreg`

model object.

1 2 |

`object` |
an object of class |

`...` |
additional arguments for method functions. |

An equivalent method to `vcov`

, to use with `addreg`

models.

A matrix of the estimated covariances between the parameter estimates in the linear or
non-linear predictor of the model. This should have row and column names corresponding
to the parameter names given by the `coef`

method.

If `object$boundary == TRUE`

, the standard errors of the coefficients
are not valid, and a matrix of `NaN`

s is returned.

Mark W. Donoghoe markdonoghoe@gmail.com

1 | ```
## For an example, see example(addreg)
``` |

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