set.basis {lpSolveAPI} | R Documentation |
Set the initial basis in an lpSolve linear program model object.
set.basis(lprec, basis, nonbasic = FALSE, default = FALSE)
lprec |
an lpSolve linear program model object. |
basis |
a numeric vector of unique values from the set {1, ..., (m+n)} (where m is the number of constraints and n is the number of decision variables) specifying the initial basis. The values may be positive or negative where a negative value indicates that the variable is at its lower bound and positive value indicates that the variable is at its upper bound. If nonbasic is FALSE then the n basic variables must be provided. If nonbasic is TRUE then the nonbasic variables must be provided as well. |
nonbasic |
a logical value. If TRUE the nonbasic variables must be included in basis as well. |
default |
a logical value. If TRUE the default (all slack variable) basis is used. In this case, the value of basis and nonbasic are ignored. |
a logical value indicating whether the basis was successfully set. If FALSE
then the specified basis was invalid.
Kjell Konis kjell.konis@epfl.ch
http://lpsolve.sourceforge.net/5.5/index.htm