Re: [Help-glpk] problem with lpx_read_model

[Robbie Morrison]

Hello all, Timo

> Message: 2
> Date: Wed, 6 Aug 2008 11:50:48 +0200
> From: "Ali Baharev" <address@hidden>
> Subject: Re: [Help-glpk] problem with lpx_read_model
> To: address@hidden
> Cc: address@hidden
> Message-ID: <address@hidden>
>
> Hello,
>
> Instead of
>
>> >  mip = glp_create_prob();
>> >  lpx_read_model("model.mod", "data.dat", "output.out");
>
> write simply this:
>
> mip = lpx_read_model("model.mod", "data.dat", "output.out");
>
>> >  lpx_simplex(mip);
>> >  lpx_integer(mip);
>
> I think lpx_simplex is not needed.

If I am not mistaken, the 'lpx_simplex' is needed before
'lpx_integer(mip)'.  But not with the following:

glp_intopt(mip, NULL);  // 'NULL' means use default setting

Moreover, 'lpx_integer' has been depreciated and should not be used
if 'glp_intopt' is available.  In addition, calling 'glp_simplex' prior
to 'glp_intopt' (should you wish to for some reason) does not cause
problems, at least, that has been my experience.

cheers
Robbie
---
Robbie Morrison
PhD student -- policy-oriented energy system simulation
Institute for Energy Engineering (IET)
Technical University of Berlin (TU-Berlin), Germany
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