Re: Octave-forge: you get what you pay for

[Rafael Laboissiere]

* John W. Eaton <address@hidden> [2005-06-15 11:41]:

> On 15-Jun-2005, Andrey Romanenko wrote:
> 
> | Maybe we should 
> | consider creating an an Octave->lp_solve interface to make it automatic.
> 
> Octave (2.9.x) now includes an interface to glpk which seems to have
> no touble solving the example problem that was posted.  So I think
> things are improving and the lp in Octave forge could be considered
> obsolete soon.

Indeed, I get the following results for the problem presented by Vic
Norton running Octave 2.9.2:

octave-2.9.2:1> A6 = [
>      1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
>      0.2 0.5 0.3 0.3 0.3 0.6 0.4 0.1 0.1
>      0.3 0.4 0.2 0.4 0.3 0.3 0.5 0.3 0.1
>      0.5 0.1 0.5 0.3 0.4 0.1 0.1 0.6 0.8
>    ];
octave-2.9.2:2> B6 = [1.0; 0.3; 0.3; 0.4];
octave-2.9.2:3> F6 = [4.1 4.3 5.8 6.0 7.6 7.5 7.3 6.9 7.3];
octave-2.9.2:4> LB6 = zeros(9, 1);
octave-2.9.2:5> UB6 = ones(9, 1)*Inf;
octave-2.9.2:6> sol6 = glpk (F6, A6, B6, LB6, UB6, 'SSSS')
sol6 =

  0.50000
  0.25000
  0.25000
  0.00000
  0.00000
  0.00000
  0.00000
  0.00000
  0.00000


-- 
Rafael



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