distionary (version 0.1.0)

eval_property: Evaluate a distribution

Description

Evaluate a distribution property. The distribution itself is first searched for the property, and if it can't be found, will attempt to calculate the property from other entries.

Usage

eval_property(distribution, entry, ...)

Value

The distribution's property, evaluated. If cannot be evaluated, returns NULL.

Arguments

distribution

Distribution object.

entry

Name of the property, such as "cdf" or "mean". Length 1 character vector.

...

If the property is a function, arguments to the function go here. Need not be named; inserted in the order they appear.

Examples

d <- distribution(
  cdf = function(x) {
    (x > 0) * pmin(x^2, 1)
  },
  g = 9.81,
  .vtype = "continuous"
)
eval_property(d, "g")
eval_property(d, "quantile", 1:9 / 10)
eval_property(d, "mean")
eval_property(d, "realise", 10)
eval_property(d, "foofy")
eval_property(d, "foofy", 1:10)