[Coin-discuss] Generating both cuts and vars

[Laszlo Ladanyi]

Hmm.... the make_non_removable should work... do you have a small example code
that reproduces your problem? I'll try to track it down without, but it'd be
mush easier with a sample.

A temporary workaround is that in the parameter file you set 
BCP_IneffectiveConstraints 0

0 stands for BCP_IneffConstr_None (look at BCP_enum.hpp). However, that way
none of the added vars/cuts will ever be deleted, so if you generate cuts, the
code might be a bit overwhelmed...

--Laci

On Fri, 30 Jun 2006, Heesu Hwang wrote:

> Hi, Laci.
> 
> I am using cuts in BB example, i.e., class BB_cut : public BCP_cut_algo, public
> OsiRowCut.
> When I threw cuts into the rows vector within XX_lp::cuts_to_rows(), COIN seems
> to delete some ineffective cuts.
> I tried *->make_non_removable, but it doesn't work.
> Also it doesn't work for vars either.
> Can I keep all the cuts and vars that I've generated, even they are not
> ineffective?
> 
> Thanks,
> 
> Heesu Hwang.
> 
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