Convert mean and sd to log standard deviation for a log normal distribution

Convert from mean and standard deviation to the log standard deviation of the lognormal distribution. Useful for defining a LogNormal() distribution from a mean and standard deviation on the natural scale.

Usage

convert_to_logsd(mean, sd)

Arguments

mean

Numeric, mean of a distribution

sd

Numeric, standard deviation of a distribution

Value

The log standard deviation of a lognormal distribution

Examples

convert_to_logsd(2, 1)
#> [1] 0.4723807