def do_testalg(testalg, G):
if testalg[1]:
print("\n\nTesting", testalg[0])
startt = time()
if testalg[0] == "Kruskal":
ST = testalg[2](G)
totalweight = 0
for e in ST:
totalweight += e.weight
else:
sorted_vertices = sorted(G.vertices, key=lambda v: v.label)
testalg[2](G, sorted_vertices[0])
endt = time()
print("Elapsed time in seconds:", endt - startt)
if testalg[0] != "Kruskal":
print_max_dist(G)
prepare_drawing(G)
else:
if len(ST) < len(G.vertices) - 1:
print("Total weight of maximal spanning forest:", totalweight)
else:
print("Total weight of spanning tree:", totalweight)
for e in G.edges:
e.colornum = 0
for e in ST:
e.colornum = 1
for v in G.vertices:
v.label = v._label
if WRITE_DOT_FILES:
with open(os.path.join(os.getcwd(), testalg[3] + '.dot'),
'w') as f:
write_dot(G, f, directed=testalg[4])
def print_dot(filename, G):
"""
Print a dot file with filename and graph
:param filename: The file
:param G: The graph
"""
with open(filename, 'w') as f:
write_dot(G, f)
def color_graph(graph):
# with open(name_file) as f:
# L = load_graph(f, read_list=True)
#
#
# graph = L[0][0]
# graph = graph.__add__(L[0][3])
for v in graph.vertices:
v.colornum = 0
i = 0
can_update = True
old_color_length = 0
while can_update:
can_update = False
# print("iteration:")
# print(i)
to_be_processed = graph.vertices
colors = {}
current_color = 0
change_happened = False
for active_vertex in graph.vertices:
if active_vertex in to_be_processed:
# print("active_vertex")
# print(active_vertex)
colors[current_color] = [active_vertex]
to_be_processed.remove(active_vertex)
for other_vertex in graph.vertices:
if other_vertex in to_be_processed:
if active_vertex.degree == other_vertex.degree:
if matching_neighbourhoods(active_vertex,
other_vertex):
colors[current_color].append(other_vertex)
to_be_processed.remove(other_vertex)
current_color += 1
for color in colors:
for vertex in colors[color]:
vertex.colornum = color
# print("old color length:")
# print(old_color_length)
# print("current color length:")
# print(len(colors))
if old_color_length != len(colors):
can_update = True
old_color_length = len(colors)
i += 1
with open('colorful.dot', 'w') as f:
write_dot(graph, f)
def writedotgraph(graph):
print("writing")
with open('mygraph.dot', 'w') as j:
graph_io.write_dot(graph, j)
def print_dot(filename, G):
with open(filename, 'w') as f:
write_dot(G, f)
