[Coin-symphony] How does one query the the constraint matrix?
Ted Ralphs
tkralphs at lehigh.edu
Fri Apr 22 16:46:48 EDT 2005
Lutz Göhring wrote:
> You could use something like:
> Mipdesc *description;
> //Allocation of descriptin
> description = sym_create_copy_mip_desc(sym_environment *env);
> constraint_matrix = description->matval;
This is certainly the safest thing to do. Since SYMPHONY is in C, direct
access to the MIP description is also available by looking at the
structure env->mip, which is of type MIPdesc. The fields of MIPdesc are
described in the manual. We could easily provide access methods for
looking at a particular matrix element if that was useful.
Cheers,
Ted
--
Dr. Ted Ralphs
Assistant Professor
Industrial and Systems Engineering
Lehigh University
(610)758-4784
tkralphs at lehigh.edu
www.lehigh.edu/~tkr2
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