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Few weeks ago when I was preparing the dataset, the visualization of MNIST images were in gray-scale even with out using cmap='Greys'. But now the images are displayed in different color if cmap is not used(image shown below).
So I am a bit confused on whats going on.

Is it normal? if not what can I do to bring the images to their normal form?

Preview of the visualization

Sameer Kattel
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  • Use cmap='gray' in you plot function and refer this link : https://stackoverflow.com/q/37228371/10077354 – Suraj Mar 24 '20 at 04:56
  • Thank you so much.. But I have no problem is visualizing the image. My actual question is.. "Is the visualization of image with different color as shown in the image above without using cmap normal?" – Sameer Kattel Mar 24 '20 at 05:08
  • Yes it is normal. – Suraj Mar 24 '20 at 05:11
  • When no colormap is given, matplotlib uses ['viridis'](https://matplotlib.org/3.1.0/tutorials/colors/colormaps.html) as default. It goes from purple over blue and greens to yellow. The explanation and the history are memorized in [this video](https://www.youtube.com/watch?v=xAoljeRJ3lU). – JohanC Mar 24 '20 at 19:34

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