showing mnist digits using python, numpy and matplot

Question

Let assume that I have MNIST digits in variable L.

L[0].reshape(28,28) will give me opportunity to plot this with matplot: plt.matshow(L[0].reshape(28,28)) .

But what if I want to plot 25 digits in 5x5 grid I cannot figure out how to shuffle L[0:24] to draw it properly with matplot.

maybe anyone will have any idea how to do it.

Answer 1

One way to do it would be something like that:

fig, axes = plt.subplots(5,5)
for i, ax in enumerate(axes.ravel()):
    ax.imshow(L[i].reshape(28,28))

That way you can loop over your subplots. If you like to shuffle the order of your plots you can use np.random.permutation(25) this will permute your indices:

fig, axes = plt.subplots(5,5)
for i, ax in zip(np.random.permutation(25), axes.ravel()):
    ax.imshow(L[i].reshape(28,28))