+4Dear All,
I want to model a variable that only can be applied for certaint set index. For example:
Variable NPGMax {
IndexDomain: (i,g,ng)|ord(i) = 1 or ord(i) = 3 or ord(i) = 6;
}
where the variable NPGMax is only applied for index 1, 3, or 6 of set bus with index i.
Is it possibel to do it dynamiclly where the value 1,3, or 6 can be assigned as an input parameter?
Thank you very much.
Best answer by Arthur
Hi
I recommend you to declare a binary parameter indexed over your set, say BP_SelectedVariables(i), and apply this parameter in the domain condition of your variable:
Parameter BP_SelectedVariables {
IndexDomain: (i);
Range: binary;
}
Variable NPGMax {
IndexDomain: (i,g,ng)| BP_SelectedVariables(i)
}This BP_SelectedVariables can then be updated through an assignment in a procedure, or directly in your user interface (it will show some checkboxes)
As soon as BP_SelectedVarialbles is updated, the variable is updated too.
+1Hi
I recommend you to declare a binary parameter indexed over your set, say BP_SelectedVariables(i), and apply this parameter in the domain condition of your variable:
Parameter BP_SelectedVariables {
IndexDomain: (i);
Range: binary;
}
Variable NPGMax {
IndexDomain: (i,g,ng)| BP_SelectedVariables(i)
}This BP_SelectedVariables can then be updated through an assignment in a procedure, or directly in your user interface (it will show some checkboxes)
As soon as BP_SelectedVarialbles is updated, the variable is updated too.
+4+4Hello
Based on your reply, the approach can be used to substitute the compound set (that no longer supported by AIMMS). For example:
Set Bus {
Index: i
}
Set GenTech {
Index: g;
}
Set GenNum {
Index: ng;
}
Set NewGen {
SubsetOf: (Bus, GenTech);
Index: cg;
}
Variable NPGMax {
IndexDomain: (cg,ng);
Range: integer;
}can be replaced by:
Parameter NewGenBus {
IndexDomain: (i,g);
Range: binary;
}
Variable NPGMax {
IndexDomain: (i,g,ng) | NewGenBus(i,g)
Range: integer;
}Is this correct?
+5Based on your reply, the approach can be used to substitute the compound set (that no longer supported by AIMMS). For example:
+4Based on your reply, the approach can be used to substitute the compound set (that no longer supported by AIMMS). For example:
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