Scale: Scale a vector

In Keng: Knock Errors Off Nice Guesses

Scale a vector

Description

Scale a vector

Usage

Scale(x, m = 0, sd = NULL)

Arguments

x	The original vector.
m	The expected Mean of the scaled vector.
sd	The expected Standard Deviation (unit) of the scaled vector.

Details

To scale x, its mean, or standard deviation (unit), or both, could be changed. The missing values of x are removed if any.

If m = 0 (default), and sd = NULL(default), x would be mean-centered (default).

If m = NULL, the mean of x would not changed. If m is not NULL, the mean of x would be transformed to sd.

If m = NULL or 0, and sd = 1, x would be standardized to be its z-score with m = 0 and sd = 1. The mean and standardized score are not necessarily 0 and 1.

Value

The scaled vector.

Examples

(x <- rnorm(10, 5, 2))
# Mean-center x.
Scale(x)
Scale(x, m = 0)
# Transform the mean of x to 3.
Scale(x, m = 3)
# Transform x to its z-score.
Scale(x, sd = 1)
# Standardize x with m = 100 and sd = 15.
Scale(x, m = 100, sd = 15)

Keng documentation built on Sept. 1, 2026, 5:07 p.m.