powering function

Powering Operation

Perturbation of two compositions. methods

powering(x, a, ...)

## S4 method for signature 'numeric,numeric'
powering(x, a)

## S4 method for signature 'CompositionMatrix,numeric'
powering(x, a)

Arguments

• x: A numeric vector of compositional data or a CompositionMatrix object.
• a: A numeric constant.
• ...: Currently not used.

Returns

A numeric vector.

Details

In compositional geometry, powering replaces the product of a vector by a scalar (scaling) and is defined as the closed powering of the components by a given scalar.

Examples

x <- as_composition(c(1, 2, 3))
y <- as_composition(c(1, 2, 1))

## Perturbation
perturbation(x, y)
x + y

## Powering
powering(y, 2)
y * 2

## Scalar product
scalar(x, y)

See Also

Other operations in the simplex: arithmetic, closure(), perturbation(), scalar()

Author(s)

N. Frerebeau