Standardisation {Rfast}

Standardisation

Description

Standardisation.

Usage

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

Arguments

x

A matrix with data. It has to be matrix, if it is data.frame for example the function does not turn it into a matrix.

center

Should the data be centred as well? TRUE or FALSE.

scale

Should the columns have unit variance, yes (TRUE) or no (FALSE)?

Details

Similar to R's built in functions "scale" there is the option for centering or scaling only or both (default).

Value

A matrix with the standardised data.

Author(s)

Michail Tsagris

R implementation and documentation: Michail Tsagris <[e-mail]> and Manos Papadakis <[e-mail]>.

See Also

colVars, colmeans, colMads

Examples

x <- matrnorm( 100, 100 )
a1 <- scale(x)[1:100, ] 
a2 <- standardise(x) 
all.equal(as.vector(a1), as.vector(a2))
x <- NULL