Extract the ADNLPModel

[dpo]

Hi guys. Congratulations on an amazing package! I'm playing around with OptimalControl.jl. If I understand well, there is an underlying ADNLPModel that can be passed to IPOPT (via NLPModelsIpopt) or to MadNLP.
I am wondering if it's possible to extract the ADNLPModel from an ocp problem. The idea would be to try different solvers.

Thanks!

[ocots]

Hi Dominique! Thanks for the message. I'm glad to read that you use the package. I still have my notes about Julia from your presentation in Toulouse few years ago :-)

Actually, you can extract the NLP model, see this tutorial.

However, we will make a new release very soon and the direct_transcription function will be replaced by another. I will tell you when it will be effective.

In the current version, you can only select ADNLPModels but in the future release there will be also the possibility to use ExaModels to model the underlying NLP model.

Note

The package OptimalControlProblems.jl can be used to get JuMP and ADNLPModel models of some optimal control problems. However, it is still in development since for some optimal control problems, both models do not correspond.