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pythonimagematplotlibpython-imaging-librarydraw

100x100 image with random pixel colour

I'm trying to make a 100x100 image with each pixel being a different random colour, like this example:

enter image description here

I've tried to use matplotlib but I'm not having much luck. Should I maybe be using PIL?

Solution

  • This is simple with numpy and pylab. You can set the colormap to be whatever you like, here I use spectral.

    from pylab import imshow, show, get_cmap
from numpy import random

Z = random.random((50,50))   # Test data

imshow(Z, cmap=get_cmap("Spectral"), interpolation='nearest')
show()

    enter image description here

    Your target image looks to have a grayscale colormap with a higher pixel density than 100x100:

    import pylab as plt
import numpy as np

Z = np.random.random((500,500))   # Test data
plt.imshow(Z, cmap='gray', interpolation='nearest')
plt.show()

    enter image description here