User-input initial guess with getInitialGuessWithUserData()

[qchen-07]

The getInitialGuess() does not reliably provide a feasible solution to my optimal control problem, and I would like to specify a feasible solution to my optimal control problem as the initial guess. I tried the following but get stuck when calling getInitialGuessWithUserData.m:

1. Create my Problem ocp
2. Get an initial guess: sol_ig=ocp.getInitialGuess();
3. General a feasible control and the corresponding paths of the states, and Initialize the InitialGuess in ocp by calling ocp.initialize(...)
4. General the feasible initial guess by: sol_igf = getInitialGuessWithUserData(sol_ig, ocp.stage, ocp.solver.collocationList{1})

It seems that there is a syntax error with the first argument of getInitialGuessWithUserData(). Any advice on this? Or are there examples to show how to specify a solution as the initial guess to my optimal control problem? Thanks!