ranges: Derive variable ranges from linear restrictions
In lintools: Manipulation of Linear Systems of (in)Equalities

ranges

R Documentation

Derive variable ranges from linear restrictions

Gaussian and/or Fourier-Motzkin elimination is used to derive upper and lower limits implied by a system of (in)equations.

ranges(A, b, neq = nrow(A), nleq = 0, eps = 1e-08)

`A`	`[numeric]` Matrix
`b`	`[numeric]` vector
`neq`	[`numeric`] The first `neq` rows in `A` and `b` are treated as linear equalities.
`nleq`	[`numeric`] The `nleq` rows after `neq` are treated as inequations of the form `a.x<=b`. All remaining rows are treated as strict inequations of the form `a.x<b`.
`eps`	`[numeric]` Coefficients with absolute value `<= eps` are treated as zero. using Fourier-Motzkin elimination.