Originally posted by: pnuzyf

Hi, my friends! 

 I tried the following model and data files in OPL, but I got the following errors:

Data parsing error: syntax error, unexpected '=', expecting (identifier) or from or (identifier path).
Invalid escape sequence "\U".

What is the reason? How can I solve these errors?

//batch.model

string mymodel = ...;
{string} Files = ...;

 main
{
  for (var dataName in thisOplModel.Files)
  {
     var source = new IloOplModelSource(thisOplModel.mymodel);
     var def = new IloOplModelDefinition(source);
     var algo = new IloCplex();
     var theModel = new IloOplModel(def,algo);
     var data = new IloOplDataSource(dataName);
     theModel.addDataSource(data);
     theModel.generate();

    if ( algo.solve() )
    {  
       writeln(algo.getObjValue());
       theModel.postProcess();
    }
    else
    {
       writeln("\tNo solution found!");
    }

    theModel.end();
    algo.end();
    def.end();
    source.end();
  }   
}

//batch.data

string mymodel = "C:\Users\James\Desktop\test\test.mod"
{string} Files={"C:\Users\James\Desktop\test\uniformtest1.dat"
                  "C:\Users\James\Desktop\test\uniformtest2.dat"}

Originally posted by: pnuzyf

I have solve the above problem! This is due to I include string  in the data file!! But I still have three other issues:

1. How to set the "relative mip gap torrence". Actually, we have one batch.ops for batch.model. And I set the value of "relative mip gap torrence" to 0.02! but it seems  that it does not work! While I run it for test.mod with a single data set, it works well? Anyone who can tell me how to solve?

2. I want to run multiple data sets! A part of the solution obtained for the previous data set will be used for the next data set! In otherwords, I should output those data element to the next data set and update the next data set. I just use "  var output1 = new IloOplOutputFile("uniformtest2.dat");  output1.writln(the relative data element); It seems that it will create a new file which is named uniformtest2.dat, but it is different from the fild that I used for the next model.

3. It is possible output the solution for each data set in different files? I want the names of different files special, such as include the name of the current data set?

Thank you very much!

Hi

1) To set the gap, after the line

var algo = new IloCplex();

you should write algo.epgap=0.02;

2) If you want uniformtest2.dat to be used as a dat file later, you should write everything in the file using the .dat format

3) That is possible, yo usimply need to replace IloOplOutputFile("uniformtest2.dat"); by IloOplOutputFile(fileName); where fileName is a string variable.

I hope this helps

Regards