import numpy as np
import matplotlib.pyplot as plt
from lndmanage.lib.node import LndNode
from matplotlib import rc
rc('text', usetex=True)
rc('font', size=8)
rc('legend', fontsize=10)
rc('text.latex', preamble=r'\usepackage{cmbright}')
# revtex column width: 246pt: 1pt = 1/72.27 inch = 8.6459 cm
standard_figsize = [8.6459/2.54, 6.5/2.54]
def extract_fee_settings(node):
"""
Extracts all fee settings from the network graph.
:return:
list base_fees
list fee_rates
list time_locks
"""
base_fees = []
fee_rates = []
time_locks = []
for u, v, d in node.network.graph.edges(data=True):
base_fees.append(d['fees']['fee_base_msat'])
fee_rates.append(d['fees']['fee_rate_milli_msat'] / 1000000.)
time_locks.append(d['fees']['time_lock_delta'])
return base_fees, fee_rates, time_locks
def plot_fee_rates(fee_rates):
exponent_min = -6
exponent_max = 0
bin_factor = 10
bins_log = 10**np.linspace(
exponent_min, exponent_max, (exponent_max - exponent_min) * bin_factor + 1)
print(bins_log)
fig, ax = plt.subplots(figsize=standard_figsize, dpi=300)
ax.axvline(x=1E-6, c='k', ls='--')
ax.hist(fee_rates, bins=bins_log)
plt.loglog()
ax.set_xlabel("Fee rate bins [sat per sat]")
ax.set_ylabel("Number of channels")
plt.tight_layout()
plt.show()
def plot_base_fees(base_fees):
exponent_min = 0
exponent_max = 5
bin_factor = 10
bins_log = 10**np.linspace(
exponent_min, exponent_max, (exponent_max - exponent_min) * bin_factor + 1)
fig, ax = plt.subplots(figsize=standard_figsize, dpi=300)
ax.hist(base_fees, bins=bins_log)
ax.axvline(x=1E3, c='k', ls='--')
plt.loglog()
ax.set_xlabel("Base fee bins [msat]")
ax.set_ylabel("Number of channels")
plt.tight_layout()
plt.show()
def plot_cltv(time_locks):
exponent_min = 0
exponent_max = 3
bin_factor = 10
bins_log = 10**np.linspace(
exponent_min, exponent_max, (exponent_max - exponent_min) * bin_factor + 1)
fig, ax = plt.subplots(figsize=standard_figsize, dpi=300)
ax.hist(time_locks, bins=bins_log)
plt.loglog()
ax.set_xlabel("CLTV bins [blocks]")
ax.set_ylabel("Number of channels")
plt.tight_layout()
plt.show()
if __name__ == "__main__":
nd = LndNode('/home/user/.lndmanage/config.ini')
base_fees, fee_rates, time_locks = extract_fee_settings(nd)
plot_fee_rates(fee_rates)
plot_base_fees(base_fees)
plot_cltv(time_locks)
