Extract the data from a model fitted with `flexsurvreg`

.

## Usage

```
# S3 method for flexsurvreg
model.frame(formula, ...)
# S3 method for flexsurvreg
model.matrix(object, par = NULL, ...)
```

## Arguments

- formula
A fitted model object, as returned by

`flexsurvreg`

.- ...
Further arguments (not used).

- object
A fitted model object, as returned by

`flexsurvreg`

.- par
String naming the parameter whose linear model matrix is desired.

The default value of

`par=NULL`

returns a matrix consisting of the model matrices for all models in the object`cbind`

ed together, with the intercepts excluded. This is not really a ``model matrix'' in the usual sense, however, the columns directly correspond to the covariate coefficients in the matrix of estimates from the fitted model.

## Value

`model.frame`

returns a data frame with all the original
variables used for the model fit.

`model.matrix`

returns a design matrix for a part of the model that
includes covariates. The required part is indicated by the `"par"`

argument (see above).

## Author

C. H. Jackson chris.jackson@mrc-bsu.cam.ac.uk