8000 No sol.stats for NLopt · Issue #625 · SciML/Optimization.jl · GitHub
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No sol.stats for NLopt #625

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QinyingChen opened this issue Nov 6, 2023 · 4 comments
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No sol.stats for NLopt #625

QinyingChen opened this issue Nov 6, 2023 · 4 comments

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@QinyingChen
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rosenbrock(x, p) = (p[1] - x[1])^2 + p[2] * (x[2] - x[1]^2)^2
x0 = zeros(2)
p = [1.0, 100.0]
f = OptimizationFunction(rosenbrock, Optimization.AutoForwardDiff())
prob = Optimization.OptimizationProblem(f, x0, p, lb = [-1.0, -1.0], ub = [1.0, 1.0])
sol = solve(prob, NLopt.LD_LBFGS())

This is the example from NLopt.jl tutorial page. I would expect to have sol.stats to work, for example, showing me how many iterations it takes, and so on. But it shows nothing. Any help is appreciated. Thanks.
@Vaibhavdixit02
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We don't have sol.stats implemented yet unfortunately. It's on the todo list!

@Vaibhavdixit02
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You have the original result from the solver package in the sol.original field, I think NLopt doesn't really give a lot of output but you could dig around in its docs to see how to obtain the information you want from that object

@Vaibhavdixit02
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This is now implemented and should be accessible in sol

@QinyingChen
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Thank you for the update. Appreciated.

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@Vaibhavdixit02 @QinyingChen
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