Syntax error Draw axis lines or the origin for Matplotlib contour plot.

Draw axis lines or the origin for Matplotlib contour plot.

To draw axis lines or the origin for matplotlib contour plot, we can use contourf(), axhline() y=0 and axvline() x=0.

  • Create data points for x, y, and z using numpy.

  • To set the axes properties, we can use plt.axis('off') method.

  • Use contourf() method with x, y, and z data points.

  • Plot x=0 and y=0 lines with red color.

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

Example

import numpy as np
import matplotlib.pyplot as plt
plt.rcParams["figure.figsize"] = [7.00, 3.50]
plt.rcParams["figure.autolayout"] = True
x = np.linspace(-1.0, 1.0, 10)
x, y = np.meshgrid(x, x)
z = -np.hypot(x, y)
plt.axis('off')
plt.contourf(x, y, z, 10)
plt.axhline(0, color='red')
plt.axvline(0, color='red')
plt.show()

Output

Updated on: 2021-05-11T12:22:57+05:30

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