[Ipopt] Using IpoptCalculatedQuantities

[Stefan Vigerske]

Hi,

the return of ip_cq->curr_exact_hessian() is a pointer to an 
IpSymMatrix, which is the base class for a number of matrix 
implementations, 
https://www.coin-or.org/Ipopt/doxygen/classIpopt_1_1SymMatrix.html
You could try to figure out which derived type it is and go further.

But it might be easier to just call your eval_h() function.

Stefan

On 05/15/2017 10:37 PM, Panos Lambrianides wrote:
> Hi Everyone,
> 
> This is a question regarding the C++ interface, specifically how to use the
> class IpoptCalculatedQuantities.  I am trying to get the Ipopt calculated
> Hessian at the optimal point so that I can use it downstream for some
> further analysis.
> 
> I got as far as
> ip_cq->curr_exact_hessian();
> 
> where ip_cq is a pointer to
> Ipopt::IpoptCalculatedQuantities
> 
> but how do I get the values out of the matrix?
> 
> Thank you.
> 
> 
> 
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-- 
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