Is there an equivalent for using matplotlib.image in ruby

Question

Been experimenting with using Ruby inside a jupyter notebook. With Python I can do this

import matplotlib.image as mpimg

Does anyone know the equivalent with Ruby, I have not been able to find it in any of the iRuby or sciruby documentation?

To clarify a little, In my gemfile I have this

gem 'iruby'
gem 'cztop'
gem 'matplotlib'

But cannot seem to get access to the image part of matplotlib that I am use to using in python.

I am trying to find the Ruby version of what, in Python, I would write like this

#importing some useful packages
import matplotlib.pyplot as plt
import matplotlib.image as mpimg
...

%matplotlib inline

#reading in an image
image = mpimg.imread('test_images/solidWhiteRight.jpg')

#printing out some stats and plotting
print('This image is:', type(image), 'with dimesions:', image.shape)
plt.imshow(image)  #call as plt.imshow(gray, cmap='gray') to show a grayscaled image

Thanks so much for any suggestions

Answer 1

This is how far I can get it to work in jupyter notebook on MacOSX:

require 'matplotlib/pyplot'
plt = Matplotlib::Pyplot

image = plt.imread 'test.png'

puts "This image's dimensions: #{image.shape}"

plt.imshow(image)
plt.show()

I used your Gemfile with the additional gem rbczmq to avoid the kernel dying (hint found here):

gem 'iruby'
gem 'cztop'
gem 'matplotlib'
gem 'rbczmq'

Note that I used a .png because matplotlib can only read PNGs natively without PIL installed.

This is how the result will look like:

Displaying the result inline as in the python version:

seems to be impossible.