Are additional parameters available for a GAM? — has_theta • gratia

Are additional parameters available for a GAM?

Usage

has_theta(object)

Arguments

object: an R object, either a family() object or an object whose class has a family() method.

Value

A logical; TRUE if additional parameters available, FALSE otherwise.

Examples

load_mgcv()
df <- data_sim("eg1", dist = "poisson", seed = 42, scale = 1 / 5)
m <- gam(y ~ s(x0) + s(x1) + s(x2) + s(x3),
  data = df, method = "REML",
  family = nb()
)
has_theta(m)
#> [1] TRUE
p <- theta(m)