Optimization: Facility Location - Facility to Customer (facility_opt) Source Destination Mesh (sd_mesh) Source Transit Destination Mesh (std_mesh) Optimization: Transportation - Plant to Customer (transport_opt) Optimization: Transshipment - Plant -> Distribution Center -> Customer (transship_opt) Calculate Inventory Level (invlevel) Calculate Purchase Cost (purcost) Economic Order Quantity (EOQ) and Total Cost (eoq)