A simple 'for()' with index set and array assignment

[Example Model: UGProductMixTab3 -- To open, click RASON Examples - Example Models discussed in RASON User Guide.]

indexSets : {
    part: { value: ['chas','tube','cone','psup','elec'] },
          prod: { value: ['tv','stereo','speaker'] }
    ],
data : {
    parts : { indexCols: ['part', 'prod'],

	     value: [['chas', 'tv', 1],
			['elec', 'stereo', 1],			
			['tube', 'tv', 1],
			['cone', 'tv', 2],
			['cone', 'stereo', 2],
			['chas', 'stereo', 1],
			['cone', 'speaker', 1],
			['psup', 'tv', 1],
			['psup', 'stereo', 1],
			['elec', 'tv', 2],
			['elec', 'speaker', 1]]
    },
    inventory: { dimensions: ['part'], value: [450, 250, 800, 450, 600] }
},
constraints: {
  "for(p in 'part')": {
    "cons[p]": { formula: "sumproduct(parts[p,], x)", upper: 'inventory' }
   }
}

In the example above, five constraints are again defined in the vertical array cons[]. As before, cons[] is defined as an array (rather than a table) because its upper bound, inventory, is a vertical array. In this case, however, the index p comes from an index set. Note that x is not transposed, because parts is a table and the row of the parts table indexed by p, parts[p,], always evaluates to a vertical array.