plot solutions cleanup

CHANGELOG.md

@@ -6,6 +6,7 @@ LaplacianOpt.jl Change Log
 - Fixed Docs compile issue
 - Updated 100 and 60 nodes instances with solutions
 - Minor updates in graphviz logging in `log.jl`
+- `plot_solutions.jl` script added to plot graphs
 
 ### v0.6.0
 - Added mutiple heuristics to handle both spanning trees and graphs with loops 

examples/solutions/plot_solutions.jl

@@ -0,0 +1,27 @@
+# Script to plot graphs of various nodes solutions in this folder
+
+using JSON
+import LaplacianOpt as LOpt
+
+num_nodes = 25
+instance = 2
+
+filename = joinpath(@__DIR__, "$(num_nodes)_nodes/$(num_nodes)_$(instance).json")
+
+open(filename) do f
+    json_str = read(f, String)
+    dict = JSON.parse(json_str)
+
+    adjacency_matrix = zeros(num_nodes, num_nodes)
+    for k in keys(dict["graph_adjacency"])
+        e = dict["graph_adjacency"][k]
+        adjacency_matrix[e[1], e[2]] = 1
+        adjacency_matrix[e[2], e[1]] = 1
+    end
+
+    return LOpt.plot_graphviz(
+        adjacency_matrix,
+        display_edge_weights = false,
+        edge_length = 0.5,
+    )
+end