Re: [Help-glpk] How I include a table of 1000 records

[Noli Sicad]

Hi Luis,

Just do this:

set I:= {1..6};
/* Las i muestras */

For 10,000 records,

set I:= {1..1000};

For CSV file, read and write, you can see the example in
glpk-4.56/examples/csv folder.

transp_csv.mod


Regards, Noli

On 10/15/15, luisjaime <address@hidden> wrote:
> Good day for all people in this list:
>
> I've the next model:
>
>
> set I;
> /* Las i muestras */
> set J;
> /* los j instrumentos */
>
> param r{i in I, j in J};
> /* cada una de las muestras de los retornos */
>
> var x {j in J};
> /* el portafolio */
>
> minimize obj: sum{i in I, j in J} r[i,j]*x[j];
> /* La función objetivo */
>
> s.t. porc_total: sum {j in J} x[j] = 1;
>
> data;
>
> set I := 1 2 3 4 5 6;
>
> set J := 1 2 3;
>
> param r: 1 2 3:=
>          1 0.04300620 0.06094491 0.8793238
>          2 0.08306441 0.05640739 0.6835024
>          3 0.05271815 0.08390957 1.2346929
>          4 0.09064139 0.08094768 1.1428601
>          5 0.09523738 0.05262512 0.6908464
>          6 0.02364452 0.06848395 1.3471945 ;
>
> end;
>
> this run ok, but, how I do for include 1000 records?  It's imposible
> write set I:= 1 2 3 .... 999 1000; there are a short form?  I tried with
> "set I:=1..1000;" form, but glpsol don't understand.   And, if I will
> like read from a csv file, How I can do it?  Of course I've ready a file
> with the records.
>
> I have readed the gmpl.pdf but if there are examples, all are related
> for the specific item in the guide but haven't examples complete showing
> situations like mine, exception the tsp problem.
>
> Thanks a lot!
>
>
> luis jaime
>
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