[Coin-symphony] How does one query the the constraint matrix?

[Michael Hennebry]

On Fri, 22 Apr 2005, Ted Ralphs wrote:

> 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. ...

I couldn't find it.  What do I click on?

> ...                      We could easily provide access methods for
> looking at a particular matrix element if that was useful.

That would be useful.
Also useful would be the means to fetch a sparse or dense row or column.

-- 
Mike   hennebry at web.cs.ndsu.NoDak.edu
"I AM DEATH, NOT TAXES.  *I* ONLY TURN UP ONCE."  --  Death