support is a class that represents the support of a random element or distribution, i.e. the set of values that it realize.
It's a conceptual class. To satisfy the concept of a support, the following methods must be implemented:
has: a function that returns a logical vector indicating whether each value in a vector is contained in the support
infimum: a function that returns the infimum of the support
supremum: a function that returns the supremum of the support
dim: a function that returns the dimension of the support
We provide two implementations that satisfy the concept:
interval: a support that is an infiite set of contiguous numeric values
finite_set: a support that is a finite set of values
Determine if a value is contained in the support.
has(object, x)Logical vector indicating membership.
I <- interval$new(0, 1, lower_closed = TRUE, upper_closed = TRUE)
has(I, 0.5) # TRUE
#> [1] TRUE
has(I, 2) # FALSE
#> [1] FALSE
S <- finite_set$new(c(1, 2, 3))
has(S, 2) # TRUE
#> [1] TRUE
has(S, 4) # FALSE
#> [1] FALSE