center: Centering and/or Standardizing a Numeric Vector

In quest: Prepare Questionnaire Data for Analysis

Description

center centers and/or standardized a numeric vector. It is an alternative to scale.default that returns a numeric vector rather than a numeric matrix.

Usage

center(x, center = TRUE, scale = FALSE)

Arguments

x	numeric vector.
center	logical vector with length 1 specifying whether grand-mean centering should be done.
scale	logical vector with length 1 specifying whether grand-SD scaling should be done.

Details

center first coerces x to a matrix in preparation for the call to scale.default. If the coercion results in a non-numeric matrix (e.g., x is a character vector or factor), then an error is returned.

Value

numeric vector of x centered and/or standardized with the same names as x.

See Also

centers center_by centers_by scale.default

Examples

center(x = mtcars$"disp")
center(x = mtcars$"disp", scale = TRUE)
center(x = mtcars$"disp", center = FALSE, scale = TRUE)
center(x = setNames(mtcars$"disp", nm = row.names(mtcars)))

quest documentation built on Sept. 10, 2021, 5:07 p.m.