set.semicont {lpSolveAPI} | R Documentation |
Set a decision variable as semicontinuous in an lpSolve linear program model object.
set.semicont(lprec, columns, sc = TRUE)
lprec |
an lpSolve linear program model object. |
columns |
a numeric vector of unique values from the set {1, ..., n} (where n is the number of decision variables in lprec ) specifying which variables should be made semicontinuous. |
sc |
a logical value. If FALSE the decision variables specified in columns will have their kind set to standard . |
Decision variables have both a type and a kind. The type is either real
or integer
and indicates the type of values the decision variable may take. The kind is one of {standard, semi-continuous, SOS}
. Semi-continuous decision variables can take allowed values between their upper and lower bound as well as zero. Please see the link in the references for further details.
a logical vector indicating whether each variable successfully had its kind set.
Kjell Konis kjell.konis@epfl.ch
http://lpsolve.sourceforge.net/5.5/index.htm