[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
## [Help-glpk] Re: glpk

**From**: |
Andrew Makhorin |

**Subject**: |
[Help-glpk] Re: glpk |

**Date**: |
Thu, 15 Dec 2005 23:59:03 +0300 |

>* I do not belong to the OR community. Anyway I need Linear Programming to*
>* solve a problem. I start using glpk with diffilculty. At least I would*
>* have expected that just adding a display statement in one of the simple*
>* example file provided with glpk would entail no problem.*
>* *
>* I just ran glpsol --model bpp.mod with some display statement added (see*
>* below (111)) and obtained (222). I don't understand this behaviour since*
>* the glpk lang.ps documentation explicitly shows that such statements as*
>* display{i in I, j in J}: i,j,x[i,j]; are allowed.*
If you wish to see results of optimization, you should specify the solve
statement preceding the display statement, that is:
...
minimize obj: sum{j in J} used[j];
/* objective is to minimize the number of bins used */
solve;
/* C.S. 15/12/05 */
display '*************************';
/* display{j in J}: j, used[j]; */
display '*************************';
/* display{i in I}: i; */
/* display{j in J}: j; */
display{ii in I, jj in J}: ii,jj,x[ii,jj];
...

**[Help-glpk] Re: glpk**,
*Andrew Makhorin* **<=**