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I'm using iageio.imwrite() when using this i keep getting a ValueError saying image must be 2D (grayscale, RGB, or RGBA). My input array has a size of 20,125,125. Is this the issue?

imageio.imwrite('patterns.gif',u_e, format = 'GIF-PIL', fps = 100)
                Can you explain what is u_e? Is it a collection of 20 images? Is it  a single image with 20 color channels? I'm a bit confused
– Andrea
                Dec 12, 2019 at 16:33
                I'll link you the full code you will see what i mean better that way. uk.answers.yahoo.com/question/index?qid=20191212155033AAZMVui
– Sam Crowther
                Dec 12, 2019 at 16:40
If I understood correctly, you want to create a .gif with 20 frames (first dimension of u_e), each frame being a 125X125 grayscale image. If that's the case, I would use the mimsave function instead of imwrite:
imageio.mimsave('patterns.gif', u_e, format = 'GIF-PIL', fps = 100)
Here's the output:
        
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