Matplotlib is a library in Python and it is numerical – mathematical extension for NumPy library. Pyplot is a state-based interface to a Matplotlib module which provides a MATLAB-like interface.
matplotlib.pyplot.axhspan() Function
The axhspan() function in pyplot module of matplotlib library is used to add a horizontal span (rectangle) across the axis.
Syntax: matplotlib.pyplot.axhspan(ymin, ymax, xmin=0, xmax=1, **kwargs)
Parameters: This method accept the following parameters that are described below:
- ymin: This parameter is the lower limit of the horizontal span in data units.
- ymax: This parameter is the upper limit of the horizontal span in data units.
- xmin: This parameter is the lower limit of the vertical span in data units.
- xmax: This parameter is the upper limit of the vertical span in data units.
Returns: This returns the Polygon.
Below examples illustrate the matplotlib.pyplot.axhspan() function in matplotlib.pyplot:
Example 1:
import matplotlib.pyplot as plt # xmin = 0 and xmax = 1 is the # default value plt.axhspan(0.25, 0.75, facecolor ='r', alpha = 0.7) |
Output:
Example 2:
#Implementation of matplotlib function import numpy as np import matplotlib.pyplot as plt t = np.arange(-2, 3, .01) s = np.sin(np.pi * t) plt.plot(t, s, color ='black') plt.axhline(y = 1, color ='black') plt.axvline(x = 1, color ='black') plt.axvline(x = 0.5, ymin = 0.75, linewidth = 8, color ='green') plt.axhline(y =.5, xmin = 0.25, xmax = 0.75, color ='black') plt.axhspan(0.25, 0.75, facecolor ='0.5', alpha = 0.5) plt.axvspan(2.25, 2.55, facecolor ='green', alpha = 0.5) plt.title('matplotlib.pyplot.axhspan() Example\n', fontsize=14, fontweight='bold') plt.show() |
Output:
