swapVariables function

Swap variables

Swap two variables in a qspray polynomial. methods

## S4 method for signature 'qspray,numeric,numeric'
swapVariables(x, i, j)

Arguments

• x: a qspray object
• i, j: indices of the variables to be swapped

Returns

A qspray object.

Examples

library(qspray)
f <- function(x, y, z) {
  x^2 + 5*y + z - 1
}
x <- qlone(1)
y <- qlone(2)
z <- qlone(3)
P <- f(x, y, z)
Q <- swapVariables(P, 2, 3)
Q == f(x, z, y) # should be TRUE