[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Help-glpk] How I include a table of 1000 records
From: |
Noli Sicad |
Subject: |
Re: [Help-glpk] How I include a table of 1000 records |
Date: |
Thu, 15 Oct 2015 14:03:37 +1100 |
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 funciĆ³n 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
>
> _______________________________________________
> Help-glpk mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/help-glpk
>