passing conditonal constraint in optmodel

sarathgk — Mon, 21 Oct 2019 20:43:52 GMT

HI,

i have the following problem

for {i in rxid} do;
if is_reprice_allowed[i] = 0 then fix new_mac_price[i] = mac_price[i];
else if is_reprice_allowed[i] = 1 and is_present_in_gpi[i] = 1 then fix new_mac_price[i] = new_mac_price_by_user[i];
else if is_reprice_allowed[i] = 0 and is_present_in_gpi[i] = 1 then do;
new_mac_price[i].lb = lower_bound[i];
new_mac_price[i].ub = upper_bound[i];
end;
end;
con c1 {i in rxid}: n_mac_price[i] =new_mac_price[i];

am trying to pass the fixed values to the constraints, but after i expand

con c1:n_mac_price[1]-new_mac_price[2]=0

where n_mac_price is unknown for now and new_mac_price is found using the above condition, hence my constraint should be like

con c1:n_mac_price[1] = 27 something like this.

am i heading in the right direction?please help

Re: passing conditonal constraint in optmodel

RobPratt — Tue, 22 Oct 2019 03:37:56 GMT

I don't quite follow why you define variable n_mac_price and variable new_mac_price if you want them to always be equal to each other.

To see the EXPAND output closer to what you expect, you can do:

   expand / solve;

The fixed values will be substituted and trivial constraints removed.

topic Re: passing conditonal constraint in optmodel in Mathematical Optimization, Discrete-Event Simulation, and OR

passing conditonal constraint in optmodel

Re: passing conditonal constraint in optmodel