Update app.py

app.py

@@ -20,8 +20,7 @@ sidebar_option = st.sidebar.radio("Select an option",
                                   "Drawing: Multipartite Layout", "Drawing: Node Colormap",
                                   "Drawing: Rainbow Coloring", "Drawing: Random Geometric Graph","Drawing: Self-loops",
                                   "Drawing: Simple Path", "Drawing: Spectral Embedding", "Drawing: Traveling Salesman Problem",
-                                  "Drawing: Weighted Graph", "3D Drawing: Animations of 3D Rotation", "3D Drawing: Basic Matplotlib",
-                                  "Graphviz Layout: Lanl Routes"])
+                                  "Drawing: Weighted Graph", "3D Drawing: Animations of 3D Rotation", "3D Drawing: Basic Matplotlib"])
 
 # Helper function to draw and display graph
 def draw_graph(G, pos=None, title="Graph Visualization"):
@@ -29,91 +28,6 @@ def draw_graph(G, pos=None, title="Graph Visualization"):
     nx.draw(G, pos=pos, with_labels=True, node_color='lightblue', node_size=500, font_size=10, font_weight='bold')
     st.pyplot(plt)
 
-# Default example: Lanl Routes graph
-def lanl_graph():
-    """Return the LANL internet view graph from lanl.edges"""
-    try:
-        fh = open("lanl_routes.edgelist")
-    except OSError:
-        print("lanl.edges not found")
-        raise
-
-    G = nx.Graph()
-
-    time = {}
-    time[0] = 0  # assign 0 to center node
-    for line in fh.readlines():
-        (head, tail, rtt) = line.split()
-        G.add_edge(int(head), int(tail))
-        time[int(head)] = float(rtt)
-
-    # get largest component and assign ping times to G0time dictionary
-    Gcc = sorted(nx.connected_components(G), key=len, reverse=True)[0]
-    G0 = G.subgraph(Gcc)
-    G0.rtt = {}
-    for n in G0:
-        G0.rtt[n] = time[n]
-
-    return G0
-
-
-# Streamlit Layout for Graphviz Layout: Lanl Routes
-def graphviz_layout_lanl_routes():
-    st.title("Graphviz Layout: Lanl Routes")
-
-    # Sidebar selection for Default Example or Custom Graph
-    graph_mode = st.radio(
-        "Choose a Mode:",
-        ("Default Example", "Create Your Own"),
-        help="Default example shows LANL routes, or you can create your own custom graph."
-    )
-
-    if graph_mode == "Default Example":
-        # Load LANL graph and visualize
-        G = lanl_graph()
-
-        st.write("Graph Summary:")
-        st.write(G)
-        st.write(f"{nx.number_connected_components(G)} connected components")
-
-        # Create and display the graph
-        plt.figure(figsize=(8, 8))
-        # Use graphviz to find radial layout
-        pos = nx.nx_agraph.graphviz_layout(G, prog="twopi", root=0)
-
-        # Draw nodes, coloring by rtt ping time
-        options = {"with_labels": False, "alpha": 0.5, "node_size": 15}
-        nx.draw(G, pos, node_color=[G.rtt[v] for v in G], **options)
-
-        # Adjust the plot limits
-        xmax = 1.02 * max(xx for xx, yy in pos.values())
-        ymax = 1.02 * max(yy for xx, yy in pos.values())
-        plt.xlim(0, xmax)
-        plt.ylim(0, ymax)
-        st.pyplot(plt)
-
-    elif graph_mode == "Create Your Own":
-        st.write("### Custom Graph Creation")
-
-        # Input form for creating custom graph
-        num_nodes = st.slider("Number of Nodes", min_value=2, max_value=50, value=10)
-        num_edges = st.slider("Number of Edges", min_value=1, max_value=num_nodes*(num_nodes-1)//2, value=10)
-
-        # Generate custom graph
-        G_custom = nx.gnm_random_graph(num_nodes, num_edges)
-
-        st.write("Generated Custom Graph:")
-        st.write(G_custom)
-
-        # Use graphviz layout
-        pos = nx.nx_agraph.graphviz_layout(G_custom, prog="twopi")
-        nx.draw(G_custom, pos, with_labels=True, node_size=500, node_color="lightblue", font_size=10)
-        st.pyplot(plt)
-
-# Display the corresponding page based on sidebar option
-if sidebar_option == "Graphviz Layout: Lanl Routes":
-    graphviz_layout_lanl_routes()
-
 if sidebar_option == "3D Drawing: Animations of 3D Rotation":
     st.title("3D Drawing: Animations of 3D Rotation")