ibawds (version 1.0.0)

rescale: Rescale Mean And/Or Standard Deviation of a Vector

Description

Rescale Mean And/Or Standard Deviation of a Vector

Usage

rescale(x, mu = mean(x), sigma = sd(x))

Value

a numeric vector with the same length as x with mean mu and standard deviation sigma.

Arguments

x

numeric vector

mu

numeric value giving the desired mean

sigma

numeric value giving the desired standard deviation

Details

By default, mean and standard deviation are not changed, i.e., rescale(x) is identical to x. Only if a value is specified for mu and/or sigma the mean and/or the standard deviation are rescaled.

Examples

x <- runif(1000, 5, 8)

# calling rescale without specifying mu and sigma doesn't change anything
all.equal(x, rescale(x))

# change the mean without changing the standard deviation
x1 <- rescale(x, mu = 3)
all.equal(mean(x1), 3)
all.equal(sd(x1), sd(x))

# rescale mean and standard deviation
x2 <- rescale(x, mu = 3, sigma = 2)
all.equal(mean(x2), 3)
all.equal(sd(x2), 2)