using JuMP, Ipopt
model = direct_model(Ipopt.Optimizer());
set_silent(model)
x = @variable(model, lower_bound = 0.0)
@variable(model, p in Parameter(1.0), set_string_name=false)
@objective(model, Min, x^2)
con = @constraint(model, x - p >= 0)
optimize!(model)
set_parameter_value(p, 5.0)
optimize!(model)
It throws error when calling set_parameter_value
ERROR: LoadError: Variable _[67553994410557440] is not a parameter.
Stacktrace:
[1] error(s::String)
@ Base .\error.jl:35
[2] ParameterRef
@ C:\Users\yangyue\.julia\packages\JuMP\Gwn88\src\variables.jl:1617 [inlined]
[3] set_parameter_value(x::VariableRef, value::Float64)
@ JuMP C:\Users\yangyue\.julia\packages\JuMP\Gwn88\src\variables.jl:1689
[4] top-level scope
@ E:\codeworkspace\julia_try\nlp_param\t.jl:14
[5] include(fname::String)
@ Base.MainInclude .\client.jl:489
[6] top-level scope
@ REPL[2]:1