The OPTMODEL Procedure

[ericvalos]

http://support.sas.com/documentation/cdl/en/ormpug/66851/HTML/default/viewer.htm#ormpug_optmodel_get...

proc optmodel;    /* specify parameters */   set O={'Detroit','Pittsburgh'};   set D={'Boston','New York'};   number c{O,D}=[30 20                  40 10];   number a{O}=[200 100];   number b{D}=[150 150];   /* model description */   var x{O,D} >= 0;   min total_cost = sum{i in O, j in D}c[i,j]*x[i,j];   constraint supply{i in O}: sum{j in D}x[i,j]=a[i];   constraint demand{j in D}: sum{i in O}x[i,j]=b[j];   /* solve and output */   solve;   print x;

I dont understand assignments c{O, D}. my idea is assign a data step of two columns to this variable. 

[mkeintz]

  c{O,D}   appears to be a cost matrix showing the costs from each of the two origins to each of the two destinations.

  x{O,D} looks like it will be the optimal number of items to ship from each O to each D, subject to the various specified constraints.

And here endeth my understanding of proc optmodel.

But (edited addition):  what data set do you want?  Input data for proc optmodel,  or output results?  I imagine proc optmodel has a number of syntax options that include specifying data sets for problem parameters or optimization results.

In the problem you presented, which I ran, it looks like it makes no sense to send any of the Pittsburgh supply to Boston.