Re: Defining a variable of mixed datatype in Mathprog

[Domingo Alvarez Duarte]

It would help if you give a problem description and your expected 
implementation for it because without then your initial question is too 
open/vague.

On 15/3/22 7:26, Anku Pandey wrote:
> Hi,
>
> I have to formulate a problem in mathprog where a variable can be both 
> integer type and continuous type based on index.
>
> Let me give an example to further illustrate this.
>
> I have two sets of items:
> set itemInteger;
> set itemContinuous;
>
> I need to define a variable, awardQuantity, on these sets so that for 
> items in the set itemInteger, it is of type Integer and for items in 
> set itemContinuous, it is of type continuous.
>
> I know I can define two different variables:
>
> var awardQuantityInt[i in itemInteger], integer;
> var awardQuantityCont[i in itemContinuous];
>
> But that is not what I am looking for.
> I want a single variable handling both types.
>
>
>
> I would really appreciate it if I can get some help on it. I have been 
> trying to find an answer to this for a few days now.
>
> Thanks,
> Anku