Adding points from a GeoDataFrame to a network as new nodes

[Dmitriy Tarasov]

I have a shapefile of points that I need to add to a graph (representing a road network) as new nodes. I read the nodes from the shapefile to a GeoDataFrame (let's call it "incidents") and try to add them to the graph as follows:

import osmnx as ox
...
for index, row in incidents.iterrows():
  incident_coords = (row["Latitude"], row["Longitude"])
  incident_node_id = ox.get_nearest_node(graph_proj, incident_coords, method="euclidean") #finds the nearest existing node on my graph, graph_proj
  incident_node = nodes_proj.loc[incident_node_id]
  incident_node_t = tuple(incident_node)
  graph_proj.add_edge(incident_coords, incident_node_t)

This last line, however, throws an error, saying, "unhashable type: 'Point'". I tried to ensure that both of the inputs to add_edge are hashable (tuples, in this case). My question is, what is the syntax, when working with geographic information, for adding a pair of coordinates from a GeoDataFrame to a graph as a new node? Thanks everyone for any advice on this.