-------- Forwarded Message -------- From: Hernandez Hormazabal, Jorge <[email protected]> To: 'Jeffrey Kantor' <[email protected]>, Hernandez Hormazabal, Jorge <[email protected]> Cc: [email protected] <[email protected]> Subject: RE: [Help-glpk] GUSEK question - MRP Date: Mon, 25 Mar 2013 20:46:43 +0000
Hi Jeff, Hi all; Thank you very much. The problem is solved. Nevertheless, now I have another error in the line 45. I have checked all the brackets and everything, and I’m not sure why is the error: “20130325_MRP_vJEH2.mod:45: syntax error in objective statement” Any idea about what it can be?. This constraint is what I call the inventory balance equation. Thanks in advance. Any comment or advice will be too much appreciated. Regards, Jorge From: Jeffrey Kantor [mailto:[email protected]] Sent: 25 March 2013 20:13 To: Hernandez Hormazabal, Jorge Cc: [email protected] Subject: Re: [Help-glpk] GUSEK question - MRP This is an easy mistake to make. This part of line 43 sum{i in I, t in T} cp[i]*P[i,t]+ci[i]*INVT[i,t]+crd[i]*Rd[i,t] should read sum{i in I, t in T} (cp[i]*P[i,t]+ci[i]*INVT[i,t]+crd[i]*Rd[i,t]) so the summation is extended over all of these terms. You'll also need to make this correction in for the second expression in line 42. Jeff On Mon, Mar 25, 2013 at 1:07 PM, Hernandez Hormazabal, Jorge <[email protected]> wrote: Dear all, I’m trying to implement a classic MRP model (you can see the details of the model below). I have done the model (see attached), but in the line 42 is an error, which says “i not defined”. Actually in the objective function is the CPi*Pit in where I think the error is. If this model may work it will be great for me in order to understand properly GUSEK. Hence, if anyone may help me in checking it, or in giving me some advices about how to improve it, it will be great. cid:[email protected] cid:[email protected] cid:[email protected] Any commend or advice will be too much appreciated!. Thank you once again. Kind regards, Jorge Hernández _______________________________________________ Help-glpk mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-glpk
20130325_MRP_vJEH2.mod
Description: 20130325_MRP_vJEH2.mod
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