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DanielZhang
Calcite | Level 5

Hi guys,

 

In the proc optmodel, I am trying to make a water valve as a decision variable. It could be either on and off, once it on, it is limited in range from 200 to 1000. How should I set up this? Thank you.

1 ACCEPTED SOLUTION

Accepted Solutions
sertalpb
SAS Employee

Hi,

 

Here is a way to do it:

 

proc optmodel;
   var valve binary;
   var flow;
   con flow_lb: flow >= valve * 200;
   con flow_ub: flow <= valve * 1000;
quit;

 

You are adding a binary variable for the valve (on/off behavior) and another one for the numerical value you want.

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1 REPLY 1
sertalpb
SAS Employee

Hi,

 

Here is a way to do it:

 

proc optmodel;
   var valve binary;
   var flow;
   con flow_lb: flow >= valve * 200;
   con flow_ub: flow <= valve * 1000;
quit;

 

You are adding a binary variable for the valve (on/off behavior) and another one for the numerical value you want.

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