# Modified Stylesheet for notebook.
from IPython.core.display import HTML
def css_styling():
    styles = open("custom.css", "r").read()
    return HTML(styles)

css_styling()

import matplotlib.pyplot as plt
import numpy as np

from collections import defaultdict
np.random.seed(seed=111111)
np.set_printoptions(precision=3, suppress=True)

signal = np.random.normal(scale=1, size=200)
signal[:50] += 50; signal[50:] += 55; signal[150:] -= 20
signal[110] = 0

plot(signal)
ylim(0,100)
title("An example signal")

signal = [350,339,351,364,369,331,331,340,346,341,357,398,381,367,383,375,353,361,375,371,373,366,382,429,406,403,429,425,427,409,402,409,419,404,429,463,428,449,444,467,474,463,432,453,462,456,474,514,489,475,492,525,527,533,527,522,526,513,564,599,572,587,599,601,611,620,579,582,592,581,630,663,638,631,645,682,601,595,521,521,516,496,538,575,537,534,542,538,547,540,526,548,555,545,594,643,625,616,640,625,637,634,621,641,654,649,662,699,672,704,700,711,715,718,652,664,695,704,733,772,716,712,732,755,761,748,748,750,744,731,782,810,777,816,840,868,872,811,810,762,634,626,649,697,657,549,162,177,175,162,161,165,170,172,178,186,178,178,189,205,202,185,193,200,196,204,206,227,225,217,219,236,253,213,205,210,216,218,235,241]
plt.plot(signal, alpha = 0.5)
plt.title('Example: Directory Assistance Calls')

signal = np.sin(np.linspace(0, 15*np.pi, num=300))
signal[105:155] *= 0.1
signal = 10 * signal + 50

noise = np.random.normal(scale = 1.5, size=300)
signal = signal + noise

plt.ylim(0,100)
plt.plot(signal)
plt.title('Example: periodic signal anomaly')