Re: [Help-glpk] [Fwd: GLPK Infeasibility set inquiry]

[Heinrich Schuchardt]

Hello Xiaoxuan,

your mail had to be forwarded manually because you are not subscribed to
the GLPK help list, see
https://lists.gnu.org/mailman/listinfo/help-glpk

Library function glp_get_unbnd_ray returns one column or row leading to
primal or dual unboundedness.

Please, observe that if you use the presolver the column or row number
will relate to the presolved problem.

To get the column or row name you will have to call either of
glp_get_row_name or glp_get_col_name. This will only work if you do not
use the presolver.

For details see doc/glpk.pdf of the source distribution.

Best regards

Heinrich Schuchardt

On 01/23/2017 05:23 PM, Andrew Makhorin wrote:
> -------- Forwarded Message --------
> To: address@hidden
> Subject: GLPK Infeasibility set inquiry
> Date: Mon, 23 Jan 2017 10:46:54 -0500
> 
> Dear All,
> 
> 
> I just started learning using GLPK and I was wondering if there is an
> infeasibility set that helps users resolve issues with the run?
> 
> 
> I have seen a similar question on the list that got a "no" answer but it
> was in 2008, so I'd like to double check if there had been any updates.
> Please let me know if I should raise the question somewhere else. 
> 
> 
> Thank you so much!
> Xiaoxuan
> 
> 
> 
> _______________________________________________
> Help-glpk mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/help-glpk
>