that's how I understand it, the supply dataset contains the supply and demand data, identified by +/- . so when I mention that chicago can supply 30, that part of the code will prevent chicago from supplying more than the mentioned amount, that's how it worked for farms, please clarify ? con flow_balance {i in NODES, c in COMMODITIES}: sum {<(i),j> in ARCS} AmountShipped[i,j,c] - sum {<j,(i)> in ARCS} AmountShipped[j,i,c] <= supply[i,c]; if the above is not the right way and it's required to restrict multiple Nodes, do I need to create another data set specifying the the limit for each node?
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