Hello,

I am trying to do the union of 3 different geometric_graph.

This is what I wrote:

from graph_tool.all import *

from gi.repository import Gtk, Gdk

import numpy as np

# M networks with N total vertices

N = 1500

M = 3

G = Graph(directed=False)

for i in range(M):

points = np.column_stack([np.random.random(N//M) * 100, i * 100 / M

+ np.random.random(N//M) * 100 / M])

G = graph_union(G, geometric_graph(points, 0.3))

pos = sfdp_layout(G)

totdeg = G.degree_property_map("total")

win = GraphWindow(G, pos, geometry=(1000, 1000), vertex_size=totdeg)

win.connect("delete_event", Gtk.main_quit)

win.show_all()

Gtk.main()

When I try to run this, I get the following error:

in graph_union

intersection = g2.new_vertex_property("int64_t", -1)

AttributeError: 'tuple' object has no attribute 'new_vertex_property'

Actually I have no idea how to solve this error, I used the grap_union

function before in the same way but the graphs type were:

Graph(directed=False) and random_graph().

Does anyone run this error?