Hello,
I have a linear program which works fine with variables and fixed
parameters. But I want to fix values of some variables for testing
purposes.
More specifically, I have a set of variables and constraints in my
model file:
set x;
var vars{x};
subject to constraint1{i in x}:
vars[i] ... ;
And data file defines the members of the set.
set x := x1 x2;
This works fine, but I want to assign a constant to vars[x1] and see the
output of the program and its effect on the other variables. I cannot
put constraints in my model file using names x1 or x2 because they are
not defined yet, and I cannot define the value of vars[x1] in data file
because set x is formed of variables. Does anyone know a way of doing
this without changing variables to parameters?
thanks,
gesi
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