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Re: [Help-glpk] Solve, Add Rows, Resolve
From: |
Andrew Makhorin |
Subject: |
Re: [Help-glpk] Solve, Add Rows, Resolve |
Date: |
Fri, 8 Dec 2006 10:34:29 +0300 |
> I try to do the following with GLPK 4.9
>
>
>
> 1. Create an instance of LP
>
> 2. Solve the LP using simplex method
>
> 3. Add a row to the instance
>
> 4. Modify the coefficients of the new row
>
> 5. Resolve it using simplex method
>
>
>
> However, the program terminate when it try to modify the
> coefficients of the new row.
>
>
>
> Can someone please help me on this?
Please provide the message which explains the termination reason,
i.e. that one you see on the screen.
lpx_set_mat_row can raise an error if:
i) the row number is out of range;
ii) the row length is invalid;
iii) some constraint coefficients are equal to zero.