Error while defining binary variable in JuMP

Specific Domains Optimization (Mathematical)
1

Hi, I’m trying to initialize a vector of binary variables as follows:

model = Model(Gurobi.Optimizer)
@variable(model, z[1:12], Bin)

But I get this error:

Exception has occurred: MethodError

MethodError: no method matching promote_shape(::Tuple{Vector{Int64}}, ::Tuple{Vector{Int64}})

How can I resolve this?

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2

Hi! Can you share the complete code and the complete error stacktrace?

2 Likes
3

Hi @vineetjnair9, what version of JuMP and Julia are you using? Your code is correct; it shouldn’t trigger this error, so something else must be going on.

2 Likes