Originally posted by: FANS_Nader_Al_Theeb

Hi, dear all

I spend a long time in trying to solve a problem in cplex and I have just one error and I can't fix it, could you please help me
1- Define the variable array as following

typedef IloArray<IloNumVarArray> IloNumVarArrayArray;
typedef IloArray<IloNumVarArrayArray> IloNumVarArrayArrayArray;
typedef IloArray<IloNumVarArrayArrayArray> IloNumVarArrayArrayArrayArray;
typedef IloArray<IloNumVarArrayArrayArrayArray>IloNumVarArrayArrayArrayArrayArray;

IloNumVarArrayArrayArrayArray DEV_hot(env,nbWoundedCat);
for(int h = 0; h <= nbWoundedCat; h++)
{
DEV_hot[h] = IloNumVarArrayArrayArray (env, nbDNodes);
for(int o=0; o<= nbDNodes; o++)
{
DEV_hot[h][o] = IloNumVarArrayArray (env, nbTimes);
for(int t = 0; t <= nbTimes; t++)
DEV_hot[h][o][t] = IloNumVarArray(env, nbTimes, 0.0, IloInfinity);
}
}
2- using expression as following:

IloExpr costSum(env);

for (int h=0; h<nbWoundedCat; h++){

for(int o=0; o<nbDNodes; o++){

for (int t=0; t<curr_t; t++){
costSum = 2 * costSum + DEV_hot[h][o][t] - 110; }}}

model.add(IloMinimize(env, costSum ));
costSum.end();

3- the error I received is

error: no match for ‘operator+’ in ‘operator*(IloNum, IloNumExprArg)(IloNumExprArg(((const IloNumExprArg&)((const IloNumExprArg*)(& costSum.IloExpr::<anonymous>.IloNumExpr::<anonymous>))))) + ((IloArray<IloNumVarArray>*)((IloArray<IloArray<IloNumVarArray> >*)DEV_hot.IloArray<X>::operator[] with X = IloArray<IloArray<IloNumVarArray> >](((long int)h)))->IloArray<X>::operator[ with X = IloArray<IloNumVarArray>](((long int)o)))->IloArray<X>::operator[ with X = IloNumVarArray(((long int)t))’

Thanks
#CPLEXOptimizers
#DecisionOptimization

Originally posted by: FANS_Nader_Al_Theeb

I have one change in the previous post, the cost sum is as

costSum = costSum + DEV_hot[h][o][t]; }}}

not
costSum = 2 * costSum + DEV_hot[h][o][t] - 110; }}}

sorry about that
#CPLEXOptimizers
#DecisionOptimization

Originally posted by: SystemAdmin

The problem is that

DEV_hot[h][o][t]

is an IloNumVarArray ( DEV_hot is a 4-dimensional array) and costSum is just an expression. You cannot add an array of variables and an expression, you need one more index (a total of 4 indices) into the DEV_hot array to specify the variable that should be added to costSum. Or do you want to add the sum of all the variables in the array to costSum ?
#CPLEXOptimizers
#DecisionOptimization