def random_slices(slice_time=1, num_slices=100):
slices = []
for i in range(num_slices):
start = random.choice(_days)
end = np.datetime64(graphtools.string_to_datetime(str(start))) + np.timedelta64(slice_time, 'D')
slices.append((start, str(end)[:10].replace('-','')))
return slices
def random_slices(slice_time=1, num_slices=100):
slices = []
for i in range(num_slices):
start = random.choice(_days)
end = np.datetime64(graphtools.string_to_datetime(
str(start))) + np.timedelta64(slice_time, 'D')
slices.append((start, str(end)[:10].replace('-', '')))
return slices
def plot_frequency_map(*maps, **plotargs):
"""
A frequency map maps buckets to frequencies. An example would be amount spent:
the bucket of spending 5 bitcoins is a key, and the value is the number of nodes that
spent that much.
-- Parameters --
maps - As many maps as you would care to plot. List 'em out, we'll pack them up right
plotargs - A bunch o' options:
- title - The title that you want for the graphs
- xlabel - The label for the x axis
- ylabel - The label for the y axis
- save_as - The name of the file you want to save the graph in.
Only saves the graph if this parameter is specified
- show - Specifiy this parameter to be true to display the graph.
TODO
- Add log/semilog support
- Add scatter support
- Add style options
_ Suggestions?
"""
plt.figure()
# plot all the maps that are given
for mp in maps:
xs = sorted(mp.keys())
ys = [mp[k] for k in xs]
time_period = [graphtools.string_to_datetime(str(time)) for time in xs]
dates = matplotlib.dates.date2num(time_period)
plt.plot(time_period,ys)
# look through kwargs, set appropriate plot features
if 'xlabel' in plotargs:
plt.xlabel(plotargs['xlabel'])
if 'ylabel' in plotargs:
plt.ylabel(plotargs['ylabel'])
if 'title' in plotargs:
plt.title(plotargs['title'])
# display or save the plot
if 'save_as' in plotargs:
plt.savefig(plotargs['save_as'])
if 'show' in plotargs and plotargs['show']:
plt.show()
def analyze_satoshi_dice():
"""
Analyzes the snippet of the bitcoin network around the time that
SatoshiDice was announced. There is a hard date for its launch.
"""
g_before = graphgen.get_graph_slice(_START_SATOSHI_DICE,
_LAUNCH_SATOSHI_DICE)
g_after = graphgen.get_graph_slice(_START_SATOSHI_DICE, _END_SATOSHI_DICE)
before_lcc = graphtools.get_lcc_from_graph(g_before)
after_lcc = graphtools.get_lcc_from_graph(g_after)
print len(before_lcc), len(after_lcc)
'''
before_in = g_before.in_degree()
before_in_values = sorted(set(before_in.values()))
before_in_hist = [before_in.values().count(x)/float(len(g_before.nodes())) for x in before_in_values]
after_in = g_after.in_degree()
after_in_values = sorted(set(after_in.values()))
after_in_hist = [after_in.values().count(x)/float(len(g_after.nodes())) for x in after_in_values]
plt.loglog(before_in_values, before_in_hist, 'bo', label='In-degree before SatoshiDICE announced')
plt.loglog(after_in_values, after_in_hist, 'ro', label='In-degree after SatoshiDICE announced')
plt.legend(loc=1)
plt.xlabel('Degree')
plt.ylabel('Fraction of nodes')
plt.title('In-degree 1 week before and after SatoshiDICE announced')
plt.show()
before_out = g_before.out_degree()
before_out_values = sorted(set(before_out.values()))
before_out_hist = [before_out.values().count(x)/float(len(g_before.nodes())) for x in before_out_values]
after_out = g_after.out_degree()
after_out_values = sorted(set(after_out.values()))
after_out_hist = [after_out.values().count(x)/float(len(g_after.nodes())) for x in after_out_values]
plt.loglog(before_out_values, before_out_hist, 'bo', label='Out-degree before SatoshiDICE announced')
plt.loglog(after_out_values, after_out_hist, 'ro', label='Out-degree after SatoshiDICE announced')
plt.legend(loc=1)
plt.xlabel('Degree')
plt.ylabel('Fraction of nodes')
plt.title('Out-degree 1 week before and after SatoshiDICE announced')
plt.show()
'''
#Can't use k-core with MultiDiGraph
'''
g_before.remove_edges_from(g_before.selfloop_edges())
g_after.remove_edges_from(g_after.selfloop_edges())
print len(graphtools.get_k_core_from_graph(g_before).nodes())
print len(graphtools.get_k_core_from_graph(g_after).nodes())
'''
#before_node_max_in = graphtools.get_node_max_in_degree(g_before)
#after_node_max_in = graphtools.get_node_max_in_degree(g_after)
#print before_node_max_in, after_node_max_in
#print sorted(g_before.in_degree().iteritems(), key=operator.itemgetter(1))
#print sorted(g_after.in_degree().iteritems(), key=operator.itemgetter(1))
#print len(g_after.edges('25', data=True))
#print nx.get_edge_attributes(g_after, 'transaction_key')
#print g_after.in_degree(after_node_max_in)
#new_nodes = set(g_after.in_degree())-set(g_before.in_degree())
#print len(new_nodes)
#new_nodes_degrees = {k: g_after.in_degree()[k] for k in new_nodes}
#print sorted(new_nodes_degrees.iteritems(), key=operator.itemgetter(1))
time_period = graphgen._days[graphgen._days.index(_START_SATOSHI_DICE /
graphgen._HMS):graphgen.
_days.index(_END_SATOSHI_DICE /
graphgen._HMS)]
transactions_per_day = []
for day in time_period:
daystart = graphtools.string_to_datetime(str(day) + '000000')
dayend = graphtools.string_to_datetime(str(day) + '235959')
transactions = []
for n, nbrs in g_after.adjacency_iter():
for nbr, edict in nbrs.items():
for eattr in edict.values():
timestamp = graphtools.string_to_datetime(eattr['date'])
if (timestamp >= daystart and timestamp <= dayend):
transactions.append(1)
transactions_per_day.append(len(transactions))
print time_period
print transactions_per_day
time_period = [
graphtools.string_to_datetime(str(time)) for time in time_period
]
dates = matplotlib.dates.date2num(time_period)
plt.plot(time_period, transactions_per_day, 'b-')
plt.xlabel('Date')
plt.ylabel('Number of transactions')
plt.title(
'Number of transactions 1 week before and after SatoshiDICE announced')
plt.show()
def analyze_satoshi_dice():
"""
Analyzes the snippet of the bitcoin network around the time that
SatoshiDice was announced. There is a hard date for its launch.
"""
g_before = graphgen.get_graph_slice(_START_SATOSHI_DICE, _LAUNCH_SATOSHI_DICE)
g_after = graphgen.get_graph_slice(_START_SATOSHI_DICE, _END_SATOSHI_DICE)
before_lcc = graphtools.get_lcc_from_graph(g_before)
after_lcc = graphtools.get_lcc_from_graph(g_after)
print len(before_lcc), len(after_lcc)
'''
before_in = g_before.in_degree()
before_in_values = sorted(set(before_in.values()))
before_in_hist = [before_in.values().count(x)/float(len(g_before.nodes())) for x in before_in_values]
after_in = g_after.in_degree()
after_in_values = sorted(set(after_in.values()))
after_in_hist = [after_in.values().count(x)/float(len(g_after.nodes())) for x in after_in_values]
plt.loglog(before_in_values, before_in_hist, 'bo', label='In-degree before SatoshiDICE announced')
plt.loglog(after_in_values, after_in_hist, 'ro', label='In-degree after SatoshiDICE announced')
plt.legend(loc=1)
plt.xlabel('Degree')
plt.ylabel('Fraction of nodes')
plt.title('In-degree 1 week before and after SatoshiDICE announced')
plt.show()
before_out = g_before.out_degree()
before_out_values = sorted(set(before_out.values()))
before_out_hist = [before_out.values().count(x)/float(len(g_before.nodes())) for x in before_out_values]
after_out = g_after.out_degree()
after_out_values = sorted(set(after_out.values()))
after_out_hist = [after_out.values().count(x)/float(len(g_after.nodes())) for x in after_out_values]
plt.loglog(before_out_values, before_out_hist, 'bo', label='Out-degree before SatoshiDICE announced')
plt.loglog(after_out_values, after_out_hist, 'ro', label='Out-degree after SatoshiDICE announced')
plt.legend(loc=1)
plt.xlabel('Degree')
plt.ylabel('Fraction of nodes')
plt.title('Out-degree 1 week before and after SatoshiDICE announced')
plt.show()
'''
#Can't use k-core with MultiDiGraph
'''
g_before.remove_edges_from(g_before.selfloop_edges())
g_after.remove_edges_from(g_after.selfloop_edges())
print len(graphtools.get_k_core_from_graph(g_before).nodes())
print len(graphtools.get_k_core_from_graph(g_after).nodes())
'''
#before_node_max_in = graphtools.get_node_max_in_degree(g_before)
#after_node_max_in = graphtools.get_node_max_in_degree(g_after)
#print before_node_max_in, after_node_max_in
#print sorted(g_before.in_degree().iteritems(), key=operator.itemgetter(1))
#print sorted(g_after.in_degree().iteritems(), key=operator.itemgetter(1))
#print len(g_after.edges('25', data=True))
#print nx.get_edge_attributes(g_after, 'transaction_key')
#print g_after.in_degree(after_node_max_in)
#new_nodes = set(g_after.in_degree())-set(g_before.in_degree())
#print len(new_nodes)
#new_nodes_degrees = {k: g_after.in_degree()[k] for k in new_nodes}
#print sorted(new_nodes_degrees.iteritems(), key=operator.itemgetter(1))
time_period = graphgen._days[graphgen._days.index(_START_SATOSHI_DICE/graphgen._HMS):graphgen._days.index(_END_SATOSHI_DICE/graphgen._HMS)]
transactions_per_day = []
for day in time_period:
daystart = graphtools.string_to_datetime(str(day) + '000000')
dayend = graphtools.string_to_datetime(str(day) + '235959')
transactions = []
for n, nbrs in g_after.adjacency_iter():
for nbr, edict in nbrs.items():
for eattr in edict.values():
timestamp = graphtools.string_to_datetime(eattr['date'])
if (timestamp >= daystart and timestamp <= dayend):
transactions.append(1)
transactions_per_day.append(len(transactions))
print time_period
print transactions_per_day
time_period = [graphtools.string_to_datetime(str(time)) for time in time_period]
dates = matplotlib.dates.date2num(time_period)
plt.plot(time_period, transactions_per_day, 'b-')
plt.xlabel('Date')
plt.ylabel('Number of transactions')
plt.title('Number of transactions 1 week before and after SatoshiDICE announced')
plt.show()
