Manipulating Distributions

library(distplyr)
#> Loading required package: distionary
library(distionary)
library(magrittr)
library(tibble)

distplyr provides a vocabulary of verbs for manipulating distributions.

Unary operations:

• +/- or shift(): Add a constant to a random variable.
• *// or multiply(): Multiply a constant to a random variable.
• invert(): Invert a distribution, i.e, the distribution of the reciprocal of a random variable.
• flip(): Flip a distribution about 0, i.e., the negative of a random variable.
• slice_left() and slice_right(): Restrict the possible values that a random variable can take.

Binary operations:

• graft_left() and graft_right(): Replace the upper or lower tail of a distribution with another distribution.

n-ary operations:

• mix(): Make a mixture distribution from two or more distributions.

Each of these take a distribution as its first argument(s), and return a distribution, making them pipeable.

Examples