Getting proper x,y axis values

[pyhill00]

I am trying to change the values of the axes so that the x and y values (0.3,0.4) and (0.3,1) are shown on the axes for the points. Anyone know how to properly do this?

    from scipy.fft import fft2, fftshift
    import numpy as np
    import matplotlib.pyplot as plt
    from skimage.filters import window
    from scipy.fftpack import fftfreq


    k = np.linspace(0,4.76*10,2400)
    kx,ky = np.meshgrid(k, k)
    x1 = 0.3
    y1 = 0.4
    x2 = 0.3
    y2 = 1

    z = 0.05*np.cos(2*np.pi*kx*x1 + 2*np.pi*ky*y1) + 0.05*np.cos(2*np.pi*kx*x2 + 2*np.pi*ky*y2)

    wz = z * window('hann', z.shape)

    plt.figure(0)
    plt.imshow(wz)

    f = fftfreq(len(k), np.diff(k)[0])
    zf = np.abs(fftshift(fft2(wz)))[1200:, 1200:]
    plt.figure(1)
    plt.axis([0,100, 0,100])

    plt.imshow(zf)
    plt.show()