NLPSOL cost function as Casadi Function

[Stuart]

Hello, I'm modifying the single_shooting.py example on the casadi repository ( https://github.com/casadi/casadi/blob/master/docs/examples/python/direct_single_shooting.py ) in various ways. One way is that I want the cost function for the NLP solver to be a casadi Function. However, I get the following error when the code calls the nlpsol function: 'Wrong number or type of arguments for overloaded function 'nlpsol'.

Code is a bit long but not very complex, I've just made a few changes to the original repository example. Here's the link: https://gist.github.com/StuartShanks/72ef61dd31f6fef8e7eb9653d5bc10c1

The error occurs at line 112. If I change J_sym back to J, like it originally was, the error disappears. So I assume the problem is with using a Casadi Function for the cost function. 

Cheers

[Otávio Ivo]

Hello,

J_sym is just a function caller. It needs to be defined by having some inputs at line 111. 

Regards,

Otávio Ivo 

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[Stuart]

Hello,

You're right! I fixed it now, cheers