### Navigation

- index
- modules |
- home|
- examples|
- tutorials|
- pyplot|
- docs »

# Fill Spiral

    import matplotlib.pyplot as plt
    import numpy as np

    theta = np.arange(0, 8*np.pi, 0.1)
    a = 1
    b = .2

    for dt in np.arange(0, 2*np.pi, np.pi/2.0):

        x = a*np.cos(theta + dt)*np.exp(b*theta)
        y = a*np.sin(theta + dt)*np.exp(b*theta)

        dt = dt + np.pi/4.0

        x2 = a*np.cos(theta + dt)*np.exp(b*theta)
        y2 = a*np.sin(theta + dt)*np.exp(b*theta)

        xf = np.concatenate((x, x2[::-1]))
        yf = np.concatenate((y, y2[::-1]))

        p1 = plt.fill(xf, yf)

    plt.show()

Total running time of the script: ( 0 minutes 0.026 seconds)

Generated by Sphinx-Gallery