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Minimise error: Variable domain should be Reals or Integers?

Oliver Blombery
Posted 3 years ago

Hi, any idea how to resolve this error?

Minimize::vdom: Variable domain {ps} should be either Reals or Integers.

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The code

Minimize[(svccoef*ststddev*
Sqrt[dcproclt + transportlt + storeproclt]) 
+ (Ceiling[(stfreq*ads), ps]/2) + minpres, 
1 <= ps <= 48, Element[{ps}, Integers], {ps}] // N
POSTED BY: Oliver Blombery
4 Replies
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Multiple constraints on the variable (here, ps) are written with And (&&) between them.

A minor change gets your code to work.

In[1]:= Minimize[{(1.64*1*Sqrt[3 + 1 + 1]) + (Ceiling[(7*5), ps]/2) + 6, 
          1 <= ps <= 48 && Element[ps, Integers]}, ps]
Out[1]= {27.1672, {ps -> 1}}
POSTED BY: Adiba Shaikh

That fixed it, thanks so much!
POSTED BY: Oliver Blombery

Hi, I've changed all the variables to specific values to remove any unknowns. I've also cleared ps as you mentioned. Still coming up with the same error:. The code is now:

Minimize[(1.64*1*Sqrt[3 + 1 + 1]) + (Ceiling[(7*5), ps]/2) + 6, 
   1 <= ps <= 48, 
   Element[{ps}, Integers], 
   {ps}] // N;

Minimize::vdom
POSTED BY: Oliver Blombery
Rohit Namjoshi
Rohit Namjoshi
Posted 3 years ago
POSTED BY: Rohit Namjoshi
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