# take wave_values.txt and plot it import matplotlib import matplotlib.pyplot as plt import numpy as np import sys matplotlib.use('wxAgg') f = open('wave_values.txt', 'r') lines = f.readlines() f.close() # convert to float vals = np.array([float(x) for x in lines]) times = np.arange(0, len(vals), 1)/4096.0 # plot. range is 0 to 1 plt.plot(times, vals) plt.show()