The routine CPXNETcopynet copies a network to a network object, overriding any other network saved in the object. The network to be copied is specified by providing the:

• the objective sense
• number of nodes
• supply values for each node
• names for each node
• number of arcs
• indices of the from-nodes (or, equivalently, the tail nodes) for each arc
• indices of the to-nodes (or, equivalently, the head nodes) for each arc
• lower and upper bounds on flow through each arc
• cost for flow through each arc
• names of each arc.

The arcs are numbered according to the order given in the fromnode and tonode arrays. Some of the parameters are optional and replaced by default values if NULL is passed for them.

Example

 status = CPXNETcopynet (env, net, CPX_MAX, nnodes, supply, NULL,
                         narcs, fromnode, tonode, NULL, NULL, obj,
                         NULL);

Parameters

env

A pointer to the CPLEX environment as returned by CPXopenCPLEX.

net

A pointer to a CPLEX network problem object as returned by CPXNETcreateprob.

objsen

Optimization sense of the network to be copied. It may take values CPX_MAX for a maximization problem or CPX_MIN for a minimization problem.

nnodes

Number of nodes to be copied to the network object.

supply

Supply values for the nodes. If NULL is passed all supply values default to 0 (zero). Otherwise, the size of the array must be at least nnodes.

nnames

Pointer to an array of names for the nodes. If NULL is passed, no names are assigned to the nodes. Otherwise, the size of the array must be at least nnodes and every name in the array must be a string terminating in 0 (zero).

narcs

Number of arcs to be copied to the network object.

fromnode

The array of indices in each arc's from-node. The indices must be in the range[0, nnodes-1]. The size of the array must be at least narcs.

tonode

The array of indices in each arc's to-node. The indices must be in the range [0, nnodes-1]. The size of the array must be at least narcs.

low

Pointer to an array of lower bounds on the flow through arcs. If NULL is passed, all lower bounds default to 0 (zero). Otherwise, the size of the array must be at least narcs. Values less than or equal to -CPX_INFBOUND are considered -infinity.

up

Pointer to an array of upper bounds on the flow through arcs. If NULL is passed, all lower bounds default to CPX_INFBOUND. Otherwise, the size of the array must be at least narcs. Values greater than or equal to CPX_INFBOUND are considered infinity.

obj

Pointer to an array of objective values for flow through arcs. If NULL is passed, all objective values default to 0 (zero). Otherwise, the size of the array must be at least narcs.

anames

Pointer to an array of names for the arcs. If NULL is passed, no names are assigned to the nodes. Otherwise, the size of the array must be at least narcs, and every name in the array must be a string terminating in 0 (zero).