How to use matrices to set constraints in Julia?

Question

I am trying to write a linear optimization model in Julia. I have several constraints to add, and I wanted to try and set them using matrices instead of setting each one manually. I have upwards of 5 constraints but I narrowed it down to two just to try and get the code to work. Here is the code I have so far:

m = Model()
@defVar(m, x[1:2] >= 0)
c= [8 12]
@setObjective(m, Max, sum([c[i]*x[i] for i= 1:2]))
A=[6 8 ; 10 20]
B= [72 140]' #bounds
for j=1:2
    @setConstraint(m,sum([A[j,i]*x[i] for i=1:2])<=B[j])
end

When I run this code, the @setObjective function works but the @setConstraints function keeps coming up with the error @setConstraint not defined .
Does anyone know how to fix this or does anyone know a better way to write this using matrices or another shorter way?

i think that should be `@addConstraint` :D – Gnimuc Aug 05 '15 at 14:33 — Gnimuc, Aug 05 '15 at 14:33
yes! got the command wrong thank you for the quick catch! – Cam Aug 05 '15 at 14:34 — Cam, Aug 05 '15 at 14:34

score 2 · Accepted Answer · answered Aug 05 '15 at 14:35

2

The command is @addConstraint (not @setConstraint ) and then it works

answered Aug 05 '15 at 14:35

Cam

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How to use matrices to set constraints in Julia?

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