Originally posted by: arronlee11

hi~

    i'm using a cplex command "IloConversion",there is a Three-dimensional decision variables x[i][j][k], and x[i][j][k] is a continuous decision variable, i want to use the command "IloConversion" to convert x[i][j][k] from continuous decisoin variable  to interger decision variable, how can  i operate?

I am not sure what the problem is? You just create an IloConversion instance for all the variables you want to convert and then use IloModel::add() (or IloModel.add() in Java) to add these conversions to the model.

Originally posted by: arronlee11

thank you for you reply, if the decision  variable x is One-dimensional decision variables, the command "IloConversion" can be used as follow:

model.add(IloConversion(env, x, ILOINT));

but now  my decision variable is a Three-dimensional decision variables x[i][j][k],how can i use the command?

You have two options:

1. Loop over the first two dimensions and create an IloConversion for each array in the innermost dimension.
2. Copy all the elements from the three-dimensional array into one flat array and create an IloConversion for that.

Originally posted by: arronlee11

i have tried the first option, it's ok. thank you very much .