Formulation: Prevent plants from sending products to themselves

3 years ago · 69f205be77
parent 3b3ecbde27
commit 69f205be77
1 changed files with 1 additions and 0 deletions
--- a/src/graph/build.jl
+++ b/src/graph/build.jl
@ -44,6 +44,7 @@ function build_graph(instance::Instance)::Graph
    # Build arcs from collection centers to plants, and from one plant to another
    for source in [collection_shipping_nodes; plant_shipping_nodes]
        for dest in process_nodes_by_input_product[source.product]
+            source.location != dest.location || continue
            distance = _calculate_distance(
                source.location.latitude,
                source.location.longitude,