topic Re: Two models in one OPTMODEL procedure in Mathematical Optimization, Discrete-Event Simulation, and OR

Two models in one OPTMODEL procedure

wutao9999 — Wed, 20 Aug 2014 17:30:28 GMT

proc optmodel;

var a >= 0; var b >= 0;

con constr1:

a + b <= 9

max 5*a + 3*b

solve ;

con constr2:

a + b <= 12

max 3*a + 4*b

solve ; (question: how do change the code here, such that this solve only deals with the problem defined after the previous solve?)

quit;

RobPratt — Wed, 20 Aug 2014 17:39:09 GMT

The simplest approach here is to use the DROP statement (SAS/OR(R) 13.2 User's Guide: Mathematical Programming) to drop the first constraint:

drop constr1;

More generally, you can use the PROBLEM and USE PROBLEM statements to handle multiple problems within one PROC OPTMODEL session: