# Decision Optimization

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## cplex opl map tuple set to a int set

• #### 1.  cplex opl map tuple set to a int set

Posted Sun July 19, 2020 08:00 AM
Hello,

please advise regarding a mapping of int set and a tuple set.

Suppose, I have an int set of 5 scenarios:
{int} S={1,2,3,4,5};

I also have a tuple set "orders"consisting of 10 tuples:
tuple Orders{
key int tuple_id;
int from_node;
int to_node;
}
{Orders} orders= {<1,1,2>, <2,1,3>, <3,1,2>, <4,1,2>, <5,1,2>, <6,1,2>, <7,1,2>, <8,1,2>, <9,1,2>, <10,1,2>};

How could I map every two orders from "{DamandData} orders " to each scenario?
So that, for eaxmple, S=1 corresponds to orders <1,1,2>, <2,1,3> , S=2 to <3,1,2>, <4,1,2> and so on?

I will be gratefull for any advice.
Thank you
BR,Irina

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Irina
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#DecisionOptimization

• #### 2.  RE: cplex opl map tuple set to a int set

Posted Sun July 19, 2020 04:40 PM
Hi,

```{int} S={1,2,3,4,5};

tuple Orders{
key int tuple_id;
int from_node;
int to_node;
}
{Orders} orders= {<1,1,2>, <2,1,3>, <3,1,2>, <4,1,2>, <5,1,2>, <6,1,2>, <7,1,2>, <8,1,2>, <9,1,2>, <10,1,2>};

{Orders} ordersPerScen[i in S]={ item(orders,(i-1)*2) } union { item(orders,(i-1)*2+1) };

execute
{
writeln(ordersPerScen);
}​```

which gives

```[{<1 1 2> <2 1 3>} {<3 1 2> <4 1 2>} {<5 1 2> <6 1 2>} {
<7 1 2> <8 1 2>} {<9 1 2> <10 1 2>}]
​```

regards

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ALEX FLEISCHER
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