Originally posted by: UDOPS

How do I declare an array on a set, in ILOG script? I see the example in the documentation, but it is only for one dimensional arrays.

I want to declare an array on a two element tuple, as:

var LambdaBlock = new Array(relaxinstance.BlockOccupied);

Then I want to update data values indexed on the set:

for (updatelambdablockoccupied in relaxinstance.BlockOccupied) {
deriveddata.LambdaBlockupdatelambdablockoccupied = LambdaBlockupdatelambdablockoccupied;
}

The error is "unknown property".
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

I didn't get the point!
Can you set up a small standalone model to point out
the problem?

Regards
Norbert
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: UDOPS

Model elements:

tuple blocktime {int block; int time;}

{blocktime} BlockOccupied=...;

float LambdaBlockBlockOccupied=...;

The index is a tuple, dimension 2.

If I wish to pass this information to another model in ILOG Script, following the Lagrangian example in the distribution, then my problem is that I see no way to define array variables with a tuple index.

My workaround has been to script the writing of a .dat file at each iteration and then to re-read the data from the .dat file.
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: UDOPS

I just noted that when I copy and paste into this message, all of my square bracket characters disappear. In the samples I posted, there were square brackets around the indices [].
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

Talking in code ...

tuple blocktime {int block; int time;}
{blocktime} BlockOccupied={<1,2>, <2,12>};
float LambdaBlock[BlockOccupied]=[12.0, 3.0];
 
execute{
    var arrLambdaBlock = new Array(BlockOccupied);
 
    for (var i in BlockOccupied) {
      arrLambdaBlock[i] = LambdaBlock[i];
    }
    writeln("arrLambdaBlock = ");
    for(var j in BlockOccupied)
      writeln(j, " --> ", arrLambdaBlock[j]);
}

Is that what you want to do?
The snippet works fine ...

Regards
Norbert
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: UDOPS

Is it possible your example will behave differently if executed in ILOG Script, instead of within OPL statement?

I have not tried to debug it further today.
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

In case I change it to

tuple blocktime {int block; int time;}
{blocktime} BlockOccupied={<1,2>, <2,12>};
float LambdaBlock[BlockOccupied]=[12.0, 3.0];
 
minimize 0;
subject to{
}
 
main{
  thisOplModel.generate();
  var arrLambdaBlock = new Array(thisOplModel.BlockOccupied);
 
  for (var i in thisOplModel.BlockOccupied) {
      arrLambdaBlock[i] = thisOplModel.LambdaBlock[i];
  }
  writeln("arrLambdaBlock = ");
  for(var j in thisOplModel.BlockOccupied)
      writeln(j, " --> ", arrLambdaBlock[j]);
}

It works as well...
Is that what you had in mind?

Regards
Norbert
#DecisionOptimization
#OPLusingCPLEXOptimizer