How to plot a 2d matrix in python with colorbar? (like imagesc in Matlab)

Question

In Matlab I can visualize a matrix data quite easily with

data = rand(10,10); % Createas a 10 x 10 random matrix
imagesc(data);
colorbar;

Now I want to do the same thing in python. I already know how to plot a 2d matrix (numpy array):

from matplotlib.pyplot import imshow
import numpy as np
data = np.random.random((10,10))
imshow(np.asarray(img))

but I don’t know how to add a colorbar to it. Any ideas?

Asked By: mcExchange

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Answer 1

import numpy as np
import matplotlib.pyplot as plt

plt.imshow(np.random.random((50,50)))
plt.colorbar()
plt.show()

Answer 2

Another possibility is to use plt.matshow()

import numpy as np
import matplotlib.pyplot as plt

plt.matshow(np.random.random((50,50)))
plt.colorbar()
plt.show()

Answered By: Gartmair

Question: