Originally posted by: SystemAdmin

[daniel said:]

hello, I run a model in OPLRUN. I would like to write the engine log to a text file. I can't find anything on this matter.

I tried this at the end of the model file:

execute {
var f = new IloOplOutputFile();
f.open("output.txt");
f.write(cplex.LogFile);
f.close();
}

it returns "undefined" in the text file. What should it be instead of cplex.LogFile????

Daniel
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

[Can_T_OM said:]

Hi Daniel,

You will find a simplistic model (examples\opl\mulprod\mulprod_main.mod) model that pushes the solution into a text file. You will probably have to customize it to collect more data.

Best regards,

Nourredine.

#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

[daniel said:]

that's the problem, I don't know how. I use to work with OPL version 3.7. It was simply:

setting cplexLogFile = // with the directory and file name .txt

I don't know what are the command lines in version 6.x
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

[Can_T_OM said:]

Let assume you have:

Hi Daniel,

Here is a quick explanation that will help with your issue. I just modified an output script that I wrote in OPL6.1

Try it and let me know.


tuple T
{
string a;
string b;
int c;
}

{T} S=...;

dvar boolean x[S];

.
.
.

execute Output_Script
{
writeln();     
  writeln("==============================");     
  writeln("Starting Output Script");
  writeln("==============================");     
  writeln();     

  var ofile = new IloOplOutputFile("C://Documents and Settings//Daniel//My Documents//Model_Directory//OutpuFile.txt");
//Where  "C://Documents and Settings//Daniel//My Documents//Model_Directory//OutpuFile.txt" is a path on your drive (example C Drive)
  ofile.writeln("Field1", ",","Field2", ",","Field3");
//You may want to use a space as a separator between 2 consecutive fields, then use this statement ofile.writeln("Field1", " ","Field2", " ","Field3");
for( var data in S)
    {
if(x[data]==1) ofile.writeln(data.a,",", data.b,",",data.c);               
    }
}
#DecisionOptimization
#OPLusingCPLEXOptimizer