EpiNow2 (version 1.6.1)

mean.dist_spec: Returns the mean of one or more delay distribution

Description

This works out the mean of all the (parametric / nonparametric) delay distributions combined in the passed <dist_spec>.

Usage

# S3 method for dist_spec
mean(x, ..., ignore_uncertainty = FALSE)

Arguments

x

The <dist_spec> to use

...

Not used

ignore_uncertainty

Logical; whether to ignore any uncertainty in parameters. If set to FALSE (the default) then the mean of any uncertain parameters will be returned as NA.

Examples

# A fixed lognormal distribution with mean 5 and sd 1.
dist1 <- LogNormal(mean = 5, sd = 1, max = 20)
mean(dist1)

# An uncertain gamma distribution with mean 3 and sd 2
dist2 <- Gamma(
 mean = Normal(3, 0.5), sd = Normal(2, 0.5), max = 20
)
mean(dist2)

# The mean of the sum of two distributions
mean(dist1 + dist2)