Model.matrix method for survstan models

Reconstruct the model matrix for a survstan model.

Usage

# S3 method for class 'survstan'
model.matrix(object, ...)

Arguments

object

an object of the class survstan.

...

further arguments passed to or from other methods.

Value

The model matrix (or matrices) for the fit.

Examples

# \donttest{
library(survstan)
fit <- aftreg(Surv(futime, fustat) ~ ecog.ps + rx, data = ovarian, baseline = "weibull", init = 0)
model.matrix(fit)
#>    ecog.ps rx
#> 1        1  1
#> 2        1  1
#> 3        2  1
#> 4        1  2
#> 5        1  1
#> 6        2  1
#> 7        2  2
#> 8        2  2
#> 9        1  1
#> 10       2  2
#> 11       2  1
#> 12       1  2
#> 13       2  2
#> 14       1  2
#> 15       1  1
#> 16       2  1
#> 17       2  1
#> 18       1  1
#> 19       1  2
#> 20       1  2
#> 21       2  2
#> 22       2  1
#> 23       1  1
#> 24       2  2
#> 25       1  2
#> 26       1  2
#> attr(,"assign")
#> [1] 1 2
# }