Bowen Fu BowenFu

BowenFu / envelope.py

Created January 5, 2017 02:43

matplotlib- amplitude envelope

	import numpy as np
	import matplotlib.pyplot as plt
	from scipy.signal import hilbert, chirp

	duration = 1.0
	fs = 400.0
	samples = int(fs*duration)
	t = np.arange(samples) / fs

	signal = chirp(t, 20.0, t[-1], 100.0)

BowenFu / offset_text.py

Created November 30, 2016 13:25 — forked from alexpearce/offset_text.py

Nice offset label formatting in matplotlib. See [the blog post](https://alexpearce.me/2014/04/exponent-label-in-matplotlib/) for more.

	import numpy as np
	from matplotlib import pyplot as plt

	fig = plt.figure(figsize=(5, 4))
	# Generate some data
	mu, sigma = 1e7, 1e6
	s = np.random.normal(mu, sigma, 10000)
	# Plot it
	plt.hist(s, 30, histtype='step')
	# Format it