Syntax error How to plot and work with NaN values in Matplotlib?

How to plot and work with NaN values in Matplotlib?

To plot and work with NaN values in matplotlib, we can take the following steps −

  • Create data using numpy with some NaN values.

  • Use imshow() method to display data as an image, i.e., on a 2D regular raster, with a colormap and data (from step 1).

  • To display the figure, use show() method.

Example

import numpy as np
from matplotlib import pyplot as plt
plt.rcParams["figure.figsize"] = [7.00, 3.50]
plt.rcParams["figure.autolayout"] = True
data = np.array([[1., 1.2, 0.89, np.NAN],
   [1.2, np.NAN, 1.89, 2.09],
   [.78, .67, np.NAN, 1.78],
   [np.NAN, 1.56, 1.89, 2.78]]
)
plt.imshow(data, cmap="gist_rainbow_r")
plt.show()

Output

Updated on: 2021-05-12T11:42:04+05:30

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