hi_solver_get_primal_ray: Get the Primal Ray (Unboundedness Certificate)
In highs: 'HiGHS' Optimization Solver
hi_solver_get_primal_ray R Documentation
Get the Primal Ray (Unboundedness Certificate)
Description
For a primal-unbounded LP (i.e. dual-infeasible), returns the primal unbounded
ray: a certificate of unboundedness, with one entry per variable (column).
Usage
hi_solver_get_primal_ray(solver)
Arguments
solver
An object of class "highs_solver".
Details
As with the dual ray, this is a simplex-method certificate; requesting it may
solve an auxiliary LP.
Value
A list with 'status' (integer, 0 = OK), 'has_primal_ray' (logical), and
'primal_ray' (numeric vector of length 'n_col', or 'NULL' when no ray exists).
highs documentation built on June 8, 2026, 9:06 a.m.
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| hi_solver_get_primal_ray | R Documentation |
Get the Primal Ray (Unboundedness Certificate)
Description
For a primal-unbounded LP (i.e. dual-infeasible), returns the primal unbounded ray: a certificate of unboundedness, with one entry per variable (column).
Usage
hi_solver_get_primal_ray(solver)
Arguments
solver |
An object of class "highs_solver". |
Details
As with the dual ray, this is a simplex-method certificate; requesting it may solve an auxiliary LP.
Value
A list with 'status' (integer, 0 = OK), 'has_primal_ray' (logical), and 'primal_ray' (numeric vector of length 'n_col', or 'NULL' when no ray exists).
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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