Basic Plotting on jupyter notebook

notebook.py

import pandas as pd
import matplotlib.pyplot as plt
import numpy as np
%matplotlib inline

x = np.linspace(0, 10, 100)
y = np.cos(x)
plt.plot(x,y)

grid = np.zeros((20,20))
grid[5,5] = 100
grid[2,8] = 50
grid[19,1] = 50
grid[10,10] = 30
# math uses origin bottom left but images use top left. transpose & set origin to get that behavior
plt.imshow(np.transpose(grid), cmap='GnBu',interpolation='none', origin='lower')