[Clp] problem with coin-or lp solver library

David Einstein deinst at gmail.com
Thu Jan 15 10:27:02 EST 2015


If you are using ClpModel, (or something that inherits from it, like
ClpSimplex) you can get the column values from
ClpModel::primalColumnSolution().

In my experience the best introduction to Clp is from the examples.  The
addColumns and addRows examples in particular cover the most useful
elementary techniques.

As far as your second question goes, I am certainly not qualified to
answer, but if would be helpful if you provided the actual example (an MPS
or LP file, or code to generate the problem).

On Thu, Jan 15, 2015 at 8:39 AM, haris iqbal <haris.phnx at gmail.com> wrote:

> Hello,
> I am trying to solve some lp problems using the clp library. But i am
> facing some problems.
>
> 1) The optimal solution that i am getting is just the value.. is there a
> way to get the value of the co-ordinates also (value of the variables for
> that optimal solution)..?
>
> 2) The problems gives the empty problem warning for some valid solution..
> those problem i have checked using some other lp problem solver, and they
> were all valid..
>
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> Clp at list.coin-or.org
> http://list.coin-or.org/mailman/listinfo/clp
>
>
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