involvedVariables function

Variables involved in a 'qspray' polynomial

Variables involved in a qspray object. methods

## S4 method for signature 'qspray'
involvedVariables(x)

Arguments

• x: a qspray object

Returns

A vector of integers. Each integer represents the index of a variable involved in x.

Examples

x <- qlone(1); z <- qlone(3)
involvedVariables(x^2 + x*z + 1) # should be c(1L, 3L)