To save an array as a grayscale image with Matplotlib/numpy, we can take the following steps −
- Set the figure size and adjust the padding between and around the subplots.
- Create random data with 5☓5 dimension.
- Set the colormap to "gray".
- Plot the data using imshow() method.
- To display the figure, use show() method.
Example
import numpy as np from matplotlib import pyplot as plt plt.rcParams["figure.figsize"] = [7.50, 3.50] plt.rcParams["figure.autolayout"] = True arr = np.random.rand(5, 5) plt.gray() plt.imshow(arr) plt.show()