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Retrieving data from a Mosel model

mmexset.c: Using sets in Mosel (requires burglari.bim)
  • retrieve a set by its model name
  • get the set size
  • get first and last set element
  • get the name or index of a set element
mmexarr.c: Using arrays in Mosel (requires trans.bim)
  • compare index tuples
  • retrieve an array by its model name
  • get array size and number of dimensions
  • get indices of first and last array entries
  • get (value of) array entries
  • check whether an index tuple lies in the range of an array
mmexas.c: Using arrays with index sets (requires trans.bim)
  • get indexing sets of an array
  • get array type
  • enumerate array entries in usual and transposed order
  • enumerate true array entries
mmexlst.c: Using lists in Mosel (requires euler.mos and euler.dat)
  • retrieve a list by its model name
  • get the list size
  • enumerate the list elements
  • get value of list element
mmexrec.c: Using records in Mosel (requires burglar_rec.mos and burglar_rec.dat)
  • retrieve an array of records (user type) by its model name
  • retrieve the record field information (field name, type, and number)
  • enumerate the array of records
  • for each array entry (record) get the value of all its fields
mmexprob.c: Accessing problems and solution information with Mosel (requires blend2.bim)
  • export problem to a file (MPS or LP format)
  • get problem status
  • get objective function value
  • get primal/dual solution values, and constraint activity
Note that these examples require the provided mos files to be pre-compiled.

Further explanation of this example: 'Mosel Library Reference Manual', Section 1.2 Post processing interface

Source Files

Data Files


/*  Mosel Library Examples                              */
/*  ======================                              */
/*                                                      */
/*  file mmexas.c                                       */
/*  `````````````                                       */
/*  Example for the use of the Mosel libraries          */
/*  (using arrays with index sets: different ways       */
/*   of enumerating arrays)                             */
/*                                                      */
/*  (c) 2008 Fair Isaac Corporation                     */
/*      author: S. Heipcke, 2001                        */

#include <stdio.h>
#include <stdlib.h>
#include "xprm_rt.h"

int main()
 XPRMmodel mod;
 XPRMalltypes rvalue;
 XPRMarray varr;
 XPRMset *sets;
 int *indices, dim, result, type, i;

 if((i!=0)&&(i!=32))                      /* Initialize Mosel */
  return 1;

 if((mod=XPRMloadmod("Models/trans.bim",NULL))==NULL)  /* Load a BIM file */
  return 2;
 if(XPRMrunmod(mod,&result,NULL))         /* Run the model */
  return 3;

 type=XPRMfindident(mod,"x",&rvalue);     /* Get the model object named 'x' */
 if((XPRM_TYP(type)!=XPRM_TYP_MPVAR)||      /* Check the type: */
    (XPRM_STR(type)!=XPRM_STR_ARR))         /* it must be an array of unknowns */
  return 4;
 dim = XPRMgetarrdim(varr);               /* Get the number of dimensions of 
                                           the array */
 indices = (int *)malloc(dim*sizeof(int));
 sets = (XPRMset *)malloc(dim*sizeof(XPRMset)); 

 XPRMgetarrsets(varr,sets);               /* Get the indexing sets  */
 printf("\n1. Logic entries:\n");
 XPRMgetfirstarrentry(varr,indices);         /* Get the first index tuple */
   printf("%s,", XPRMgetelsetval(sets[i],indices[i],&rvalue)->string);
  printf("%s), ",XPRMgetelsetval(sets[dim-1],indices[dim-1],&rvalue)->string);
 } while(!XPRMgetnextarrentry(varr,indices));  /* Get the next index tuple */ 

 type = XPRMgetarrtype(varr);                   /* Get the type of the array */

 if(XPRM_ARR_IS_SPARSE(type))           /* There would be no difference to
                                           the first way of enumerating 
                                           in the case of a dense array */
  printf("\n\n2. True entries:\n");
  XPRMgetfirstarrtruentry(varr,indices);   /* Get the first true index tuple */
   printf("%s), ",XPRMgetelsetval(sets[dim-1],indices[dim-1],&rvalue)->string);
  } while(!XPRMgetnextarrtruentry(varr,indices));/* Get next true index tuple*/

 return 0;

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