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| From: | Xypron |
| Subject: | Re: [Help-glpk] Transport Problem advanced |
| Date: | Fri, 10 Oct 2008 20:35:52 +0200 |
| User-agent: | Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.17) Gecko/20080829 SeaMonkey/1.1.12 |
Hello Andy!
But I want it is set to 1 if sum{i in I} x[i,j] >= demand[j]
You might try something like:
# Big M, use the smallest possible value.
param M := 1e6;
# Binary
var b[j in J] binary;
s.t. gt_demand{j in J} :
sum{i in I} x[i,j] - demand[j] - M * b[j] <= 0;
Best regards
Xypron
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