Re: [Help-glpk] Error: multiplication of linear forms not allowed

[Michael Hennebry]

On Sun, 19 Jun 2011, Sarad AV wrote:

> How do we solve Integer Linear Programming formulations of the Travelling
> Salesman Problem as in this URL
> http://support.sas.com/documentation/cdl/en/ormpug/63352/HTML/default/viewer.htm#ormpug_milpsolver_sect020.htm
>
> where there is a multiplication operator in the Objective function.
>
> glpsol complains " multiplication of linear forms not allowed".
>
> Is there an easy fix to this?

My guess is that for some reason glpsol thinks
c is variables instead of constants.

That is what needs fixing.

--
Michael   address@hidden
"Pessimist: The glass is half empty.
Optimist:   The glass is half full.
Engineer:   The glass is twice as big as it needs to be."