This is the 13th model in a series of tutorial examples. More...

#include "gams.h"
#include "transport.h"
#include <iostream>
#include <map>
#include <string>
#include <tuple>
#include <vector>

Functions
int	main (int argc, char *argv[])

Detailed Description

This is the 13th model in a series of tutorial examples.

Here we show:

How to run a GAMSJob using a wrapper class to package a particular GAMS model

Definition in file transport13.cpp.

Function Documentation

◆ main()

int main	(	int	argc,
		char *	argv[] )

Definition at line 42 of file transport13.cpp.

{
    cout << "---------- Transport 13 --------------" << endl;
 
    try {
        vector<string> plants {"Seattle", "San-Diego"};
        vector<string> markets {"New-York", "Chicago", "Topeka"};
        map<string, double> capacity {
            { "Seattle", 350.0 }, { "San-Diego", 600.0 }
        };
        map<string, double> demand {
            { "New-York", 325.0 }, { "Chicago", 300.0 }, { "Topeka", 275.0 }
        };
        map<tuple<string, string>, double> distance {
            { make_tuple("Seattle",   "New-York"), 2.5 },
            { make_tuple("Seattle",   "Chicago"),  1.7 },
            { make_tuple("Seattle",   "Topeka"),   1.8 },
            { make_tuple("San-Diego", "New-York"), 2.5 },
            { make_tuple("San-Diego", "Chicago"),  1.8 },
            { make_tuple("San-Diego", "Topeka"),   1.4 }
        };
 
        GAMSWorkspaceInfo wsInfo;
        if (argc > 1)
            wsInfo.setSystemDirectory(argv[1]);
        GAMSWorkspace ws(wsInfo);
 
        Transport t(ws);
 
        for (string p : plants)
            t.i().addRecord(p);
 
        for (string m : markets)
            t.j().addRecord(m);
 
        for (string p : plants)
            t.a().addRecord(p).setValue(capacity[p]);
 
        for (string m : markets)
            t.b().addRecord(m).setValue(demand[m]);
 
        for (auto dis : distance)
            t.d().addRecord(get<0>(dis.first), get<1>(dis.first)).setValue(distance[dis.first]);
 
        t.f().addRecord().setValue(90);
 
        t.opt().setAllModelTypes("cplex");
 
        t.run(GAMSCheckpoint(), cout);
 
        cout << "Objective: " << t.z().firstRecord().level() << endl;
        for (GAMSVariableRecord rec : t.x())
            cout << "x(" << rec.key(0) << "," << rec.key(1) << "): level=" << rec.level() <<
                    " marginal=" << rec.marginal() << endl;
 
    } catch (GAMSException &ex) {
        cout << "GAMSException occured: " << ex.what() << endl;
    } catch (exception &ex) {
        cout << ex.what() << endl;
    }
 
    return 0;
}

Functions

Detailed Description

Function Documentation

◆ main()