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07-22-2015 04:01 PM

Hi,

My objective function Z is a summation of many portions, at initial solving, I just define objective function as Z = sum ..... Now I need some parts of it, like Z1 = sum ... ; Z2 = sum... ; Z3 = sum...

Where Z= Z1 + Z2 +Z3 + ... ;

How could I define each Z1, Z2, Z3 ? Thanks!

Details is as the attachment below:

(Last several lines after "quit" is I want to add)

Thanks!

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07-22-2015 04:20 PM

You can use the IMPVAR statement to declare each part:

SAS/OR(R) 14.1 User's Guide: Mathematical Programming

And then declare your objective as:

min Z = Z1 + Z2 + ...

This way, you don't have to repeat the expressions.

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07-22-2015 06:49 PM

That's helpful! Thank you!