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Showing content from https://www.gams.com/latest/docs/apis/examples_dotnet/Transport2_8cs_source.html below:

Transport2/Transport2.cs Source File

2using

System.Collections.Generic;

19 static void

Main(

string

[] args)

22 if

(Environment.GetCommandLineArgs().Length > 1)

23

ws =

new GAMSWorkspace

(systemDirectory: Environment.GetCommandLineArgs()[1]);

27 using

(StreamWriter writer =

new

StreamWriter(ws.

WorkingDirectory

+ Path.DirectorySeparatorChar +

"tdata.gms"

))

29

writer.Write(GetDataText());

35

opt.

Defines

.Add(

"incname"

"tdata"

);

38

Console.WriteLine(

"x("

+ rec.Key(0) +

","

+ rec.Key(1) +

"): level="

+ rec.

Level

" marginal="

+ rec.

Marginal

);

42 static

String GetDataText()

46 i canning plants / seattle, san-diego / 47 j markets / new-york, chicago, topeka / ; 51 a(i) capacity of plant i in cases 55 b(j) demand at market j in cases 60 Table d(i,j) distance in thousands of miles 61 new-york chicago topeka 63 san-diego 2.5 1.8 1.4 ; 65 Scalar f freight in dollars per case per thousand miles /90/ ; 70static

String GetModelText()

78 a(i) capacity of plant i in cases 79 b(j) demand at market j in cases 80 d(i,j) distance in thousands of miles 81 Scalar f freight in dollars per case per thousand miles; 83$if not set incname $abort 'no include file name for data file provided' 86 Parameter c(i,j) transport cost in thousands of dollars per case ; 88 c(i,j) = f * d(i,j) / 1000 ; 91 x(i,j) shipment quantities in cases 92 z total transportation costs in thousands of dollars ; 97 cost define objective function 98 supply(i) observe supply limit at plant i 99 demand(j) satisfy demand at market j ; 101 cost .. z =e= sum((i,j), c(i,j)*x(i,j)) ; 103 supply(i) .. sum(j, x(i,j)) =l= a(i) ; 105 demand(j) .. sum(i, x(i,j)) =g= b(j) ; 107 Model transport /all/ ; 109 Solve transport using lp minimizing z ;

void Run(GAMSOptions gamsOptions=null, GAMSCheckpoint checkpoint=null, TextWriter output=null, Boolean createOutDB=true)

Dictionary< string, string > Defines

GAMSJob AddJobFromString(string gamsSource, GAMSCheckpoint checkpoint=null, string jobName=null)

GAMSOptions AddOptions(GAMSOptions optFrom=null)

This is the 2nd model in a series of tutorial examples. Here we show: How to use include files to sep...

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