btc-metcalfe.py

#!/usr/bin/env python

# Wikipedia: https://en.wikipedia.org/wiki/Metcalfe%27s_law

import numpy as np
from matplotlib import pyplot as plt
import urllib
 
def g(u):
    return urllib.urlopen(u).readlines()
 
rmcap=g("https://api.blockchain.info/charts/market-cap?format=csv&timespan=all")
rtxn=g("https://api.blockchain.info/charts/n-transactions-excluding-popular?format=csv&timespan=all")
 
mcap=np.array([float(x.split(",")[1][:-1]) for x in rmcap])
txn= np.array([float(x.split(",")[1][:-1]) for x in rtxn])
 
plt.plot(mcap)
plt.plot(txn**2)
plt.axes().set_yscale("log")
plt.show()