predicates {mpoly}

mpoly predicate functions

Description

Various functions to deal with mpoly and mpolyList objects.

Usage

is.constant(x)

is.mpoly(x)

is.unipoly(x)

is.bernstein(x)

is.bezier(x)

is.chebyshev(x)

is.mpolyList(x)

is.linear(x)

Arguments

x

object to be tested

Value

Vector of logicals.

Examples

p <- mp("5")
is.mpoly(p)
is.constant(p)

is.constant(mp(c("x + 1", "7", "y - 2")))

p <- mp("x + y")
is.mpoly(p)

is.mpolyList(mp(c("x + 1", "y - 1")))



is.linear(mp("0"))
is.linear(mp("x + 1"))
is.linear(mp("x + y"))
is.linear(mp(c("0", "x + y")))

is.linear(mp("x + x y"))
is.linear(mp(c("x + x y", "x")))


(p <- bernstein(2, 5))
is.mpoly(p)
is.bernstein(p)

(p <- chebyshev(5))
is.mpoly(p)
is.chebyshev(p)
str(p)