either a character vector or an integer vector containing the branch modes for the decision variables specified in columns. The possibilities are: 0 = "ceiling", 1 = "floor" and 2 = "auto".
Arguments
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 for which decision variables the branch modes should be retrieved. If NULL branch modes are retrieved for all the decision variables.
as.char
a logical value. If TRUE the branch mode is returned as a character string, otherwise the integer code used directly in lpSolve is returned.