Loading...
Searching...
No Matches
SimpleCutstock.cs
1using System;
2using System.Collections.Generic;
3using System.Linq;
4using System.Text;
5using GAMS;
6
7namespace Cutstock
8{
16 class SimpleCutstock
17 {
18 static void Main(string[] args)
19 {
20 GAMSWorkspace ws;
21 if (Environment.GetCommandLineArgs().Length > 1)
22 ws = new GAMSWorkspace(systemDirectory: Environment.GetCommandLineArgs()[1]);
23 else
24 ws = new GAMSWorkspace();
25
26 Cutstock cs = new Cutstock(ws);
27
28 Dictionary<string, double> d =
29 new Dictionary<string, double>() { { "i1", 97 }, { "i2", 610 }, { "i3", 395 }, { "i4", 211 } };
30 Dictionary<string, double> w =
31 new Dictionary<string, double>() { { "i1", 47 }, { "i2", 36 }, { "i3", 31 }, { "i4", 14 } };
32 int r = 100; // raw width
33
34 cs.RawWidth.AddRecord().Value = r;
35 foreach (string i in d.Keys)
36 cs.Widths.AddRecord(i);
37 foreach (KeyValuePair<string, double> t in d)
38 cs.Demand.AddRecord(t.Key).Value = t.Value;
39 foreach (KeyValuePair<string, double> t in w)
40 cs.Width.AddRecord(t.Key).Value = t.Value;
41
42 cs.Opt.AllModelTypes = "cplex";
43
44 try
45 {
46 cs.Run(Console.Out);
47 foreach (GAMSParameterRecord rep in cs.PatRep)
48 {
49 Console.WriteLine(rep.Key(0) + ", pattern " + rep.Key(1) + ": " + rep.Value);
50 }
51 }
52 catch (GAMSException e)
53 {
54 Console.WriteLine("Problem in GAMS: " + e.Message);
55 return;
56 }
57 catch (System.Exception e)
58 {
59 Console.WriteLine("System Error: " + e.Message);
60 return;
61 }
62 }
63 }
64}
Cutstock.SimpleCutstock
This example implements a column generation approach to solve the cutting stock problem....
Definition: SimpleCutstock.cs:17
GAMS::GAMSSymbolRecord::Key
string Key(int index)