write.lp {ROI.plugin.lpsolve} | R Documentation |
Write a optimization problem to a file.
write.lp(x, file, type=c("lp", "mps", "freemps"))
x |
an object of type |
file |
a character giving the name of the file the optimization problem is written to. |
type |
a character giving the name of the file format used to store the optimization problem. |
The optimization problems can be written to the three file formats "lp"
,
"mps"
and "freemps"
.
Where it seems important to note that the "lp"
format refers to
lpsolves
native file format
(http://lpsolve.sourceforge.net/5.5/lp-format.htm)
and not to the CPLEX LP format
.
## Not run: mat <- matrix(c(3, 4, 2, 2, 1, 2, 1, 3, 2), nrow=3, byrow=TRUE) x <- OP(objective = c(2, 4, 3), constraints = L_constraint(L = mat, dir = c("<=", "<=", "<="), rhs = c(60, 40, 80)), bounds = V_bound(ui = seq_len(3), ub = c(1000, Inf, 1000), nobj = 3), maximum = TRUE) write.lp(x, "optimization_problem.lp") ## End(Not run)