[Ipopt-tickets] [Ipopt] #288: Cannot pass information through input variables

[Ipopt]

#288: Cannot pass information through input variables
-----------------------+------------------------------------------
  Reporter:  kamilova  |      Owner:  ipopt-team
      Type:  defect    |     Status:  new
  Priority:  high      |  Component:  Ipopt
   Version:  3.12      |   Severity:  normal
Resolution:            |   Keywords:  input exception -101 Fortran
-----------------------+------------------------------------------

Comment (by kamilova):

 After rereading the documentation, I realised my mistake. In case anyone
 has the same problem, the reason is that when the jacobian for the
 constraints is called the first time, the sparsity information for the
 matrix is provided, while x and the values in the matrix are kept null.
 After it has been provided, the following runs of the method will start to
 fill in the values (and x will no longer be null).

 It was clearly written in the documentation, but I didn't really
 understand until now.

--
Ticket URL: <https://projects.coin-or.org/Ipopt/ticket/288#comment:1>
Ipopt <http://projects.coin-or.org/Ipopt>
Interior-point optimizer for nonlinear programs.