Harsha

You can only have 20 subplots (4 times 5) indexed from 1 through 20. By saying i+1, you are asking for subplot 21 which cannot be done.

Assuming you only have 20 images, the following should work. However, if you have more than 20 images you may want to adjust the shape of your grid. ``` for...

``` for i, image in enumerate(images, 1): try: plt.subplot(4, 5, i) plt.imshow(image) except ValueError: break ```

Or another way to do it is ``` for i, image in enumerate(images[:20], 1): plt.subplot(4, 5, i) plt.imshow(image) ```

Update: on ec2 (cpu only)...`pip install nobrainer` fails because the tensorflow-cpu in installed. Probably, we should make `pip install no-brainer[cpu]` available.

related discussion from the past https://github.com/neuronets/nobrainer/issues/135

installing nobrainer on a gpu node throws the following (but otherwise all good)...would be nice to see a clean install like the one on macos 

`TypeError: Segmentation.fit() got an unexpected keyword argument 'callbacks'`

- [ ] test on a100 (but otherwise confident about the resolution) - [ ] add example in guide

closing due to inactivity