Originally posted by: SystemAdmin

[subsoho said:]

Hi all

Am very new to this environment and have an error in my code:

[i]int NbHours = ...;
range MaxHours = 1..NbHours;

dvar float+ Planning[Asig][MaxHours][Space];

minimize

sum(a in Asig, t in 1.. MaxHours, s in Space)
(Planning[a][t][s]);
[/i]

The error says :
No range for types int range. FFC.mod


Cant use a range to iterate across a multidimensional array ?



#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

[fwagner@Ilog.fr said:]

The text processor messed up your code snippet, I guess you have
  sum(a in Asig, t in 1.. MaxHours, s in Space)
      Planning[a][t][b][ s ][/b];

How ar [tt]Asig [/tt] and [tt]Space [/tt]defined?
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

[jfk said:]

the code you provided one can identify a couple of errors:
1. your array has just 2 dimension in the goal meanwhile you defined it (and actually the iterator is set up int he sum) as 3d
2. you didn't define range of Space and Asig
3. you want to use a range (MaxHours) as an integer when you define your range


int NbHours = 10;
range MaxHours = 1..NbHours;
range Asig = 4..6;//<------new line - pr.2<br />range Space = 11..12;//<------new line - pr.2<br />
dvar float+ Planning[Asig][MaxHours][Space];

minimize
  sum(a in Asig, t in MaxHours, s in Space) //<------corrected line - pr.3<br />      Planning[a][t][s];//<------corrected line - pr.1<br />

I admit the error message is a bit ambiguous, but it is a generated message which sometimes makes it difficult to compose a really meaningful English sentence.
I hope it helps
cheers
#DecisionOptimization
#OPLusingCPLEXOptimizer