Lognormal distribution

A lognormal distribution as a <dist_spec>, given either by its natural parameters meanlog/sdlog or by its mean/sd.

Usage

LogNormal(meanlog, sdlog, mean, sd, ...)

Arguments

meanlog, sdlog

mean and standard deviation of the distribution on the log scale with default values of 0 and 1 respectively.

mean, sd

Mean and standard deviation of the distribution, as an alternative to meanlog/sdlog.

...

Limits of the distribution, passed to bound_dist().

Value

A <dist_spec>.

See also

Distributions for an overview and the other distributions.

Examples

LogNormal(mean = 4, sd = 1)
#> - lognormal distribution:
#>   meanlog:
#>     1.4
#>   sdlog:
#>     0.25
LogNormal(mean = 4, sd = 1, max = 10)
#> - lognormal distribution (max: 10):
#>   meanlog:
#>     1.4
#>   sdlog:
#>     0.25
# Uncertain parameters must be given as the natural parameters
LogNormal(meanlog = Normal(1.5, 0.5), sdlog = 0.25, max = 10)
#> - lognormal distribution
#> Returning NA: this distribution has uncertain parameters.
#> ℹ Resolve the uncertainty first with `fix_parameters()`.
#> This message is displayed once every 8 hours.
#>  (max: 10):
#>   meanlog:
#>     - normal distribution:
#>       mean:
#>         1.5
#>       sd:
#>         0.5
#>   sdlog:
#>     0.25