[SCIP] Get coefficients values and right hand side

[Mohamed Mustapha Kabbaj]

Thank you so much.

Kabbaj

Le mer. 1 mai 2019 à 04:17, Stefan Vigerske <stefan at math.hu-berlin.de> a
écrit :

> Hi,
>
> what matrix and right-hand-side? This isn't defined for CIPs.
>
> You could iterate through the constraint handlers in SCIP, if it is one
> that you know handles some from of linear constraint (cons_linear,
> cons_knapsack, cons_varbound, etc), then the constraint handler can give
> you its constraints. Further, for each constraint handler, there exist
> methods to access the constraint data, e.g., coefficients or left- and
> right-hand-sides, if applicable.
>
> But as you are not the first one who wants only the MIP part of the CIP,
> the functions in pub_misc_linear.h might be helpful, too:
> https://scip.zib.de/doc-6.0.1/html/pub__misc__linear_8h.php
> The confusingly named SCIPgetConsVals() gives the coefficients. It seems
> that you have to guess the correct number of coefficients or hope that
> it coincides with SCIPgetConsNVars(). It's probably safter to use
> SCIPconsGetRow() and then query the row.
>
> Stefan
>
> On 4/30/19 2:36 PM, Mohamed Mustapha Kabbaj wrote:
> > Hello everyone,
> >
> > I would like to get values of matrix coefficients and right hand side. I
> > found some callable functions :
> > SCIPgetConss
> > SCIPgetConsRhs
> > SCIPConsGetVals
> >
> > Are these values  convenient and does it exist a simple tip to get that
> > values.
> >
> > Thank you in advance
> >
> > Kabbaj
> >
> >
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> > Scip at zib.de
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> >
>
>
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