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I am encountering the following problem when running the Copy-Paste Example from the (stable) ModelingToolkit documentation:
julia> using ModelingToolkit, OrdinaryDiffEq
julia> @parameters t σ ρ β
(t, σ, ρ, β)
julia> @variables x(t) y(t) z(t)
(x(t), y(t), z(t))
julia> D = Differential(t)
(::Differential) (generic function with 1 method)
julia> eqs = [D(x) ~ σ*(y-x),
D(y) ~ x*(ρ-z)-y,
D(z) ~ x*y - β*z]
3-element Array{Equation,1}:
Equation(derivative(x(t), t), σ * (y(t) - x(t)))
Equation(derivative(y(t), t), x(t) * (ρ - z(t)) - y(t))
Equation(derivative(z(t), t), x(t) * y(t) - β * z(t))
julia> @named lorenz1 = ODESystem(eqs)
ERROR: LoadError: UndefVarError: @named not defined
in expression starting at none:1
julia> @named lorenz2 = ODESystem(eqs)
ERROR: LoadError: UndefVarError: @named not defined
in expression starting at none:1
My environment contains the latest stable ModelingToolkit.jl
and OrdinaryDiffEq.jl
:
(electrical) pkg> status
Status `~/julia/electrical/Project.toml`
[961ee093] ModelingToolkit v5.12.1
[1dea7af3] OrdinaryDiffEq v5.52.0
[91a5bcdd] Plots v1.10.6
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