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.ylabel() Function
The ylabel() function in pyplot module of matplotlib library is used to set the label for the x-axis..
Syntax: matplotlib.pyplot.ylabel(ylabel, fontdict=None, labelpad=None, **kwargs)
Parameters: This method accept the following parameters that are described below:
- ylabel: This parameter is the label text. And contains the string value.
- labelpad: This parameter is used for spacing in points from the axes bounding box including ticks and tick labels and its default value is None.
- **kwargs: This parameter is Text properties that is used to control the appearance of the labels.
Below examples illustrate the matplotlib.pyplot.ylabel() function in matplotlib.pyplot:
Example #1:
# Implementation of matplotlib.pyplot.ylabels() # function import numpy as np import matplotlib.pyplot as plt t = np.arange(-180.0, 180.0, 0.1) s = np.radians(t)/2. plt.plot(t, s, '-', lw = 2) plt.xlabel('Longitude') plt.ylabel('Latitude') plt.title('ylabels() function') plt.grid(True) plt.show() |
Output:
Example #2:
# Implementation of matplotlib.pyplot.ylabels() # function import numpy as np import matplotlib.pyplot as plt valx1 = np.linspace(0.0, 5.0) x2 = np.linspace(0.0, 2.0) valy1 = np.cos(2 * np.pi * valx1) * np.exp(-valx1) y2 = np.cos(2 * np.pi * x2) plt.subplot(2, 1, 1) plt.plot(valx1, valy1, 'o-') plt.title('ylabel() Example') plt.ylabel('Damped oscillation') plt.subplot(2, 1, 2) plt.plot(x2, y2, '.-') plt.xlabel('time (s)') plt.ylabel('Undamped') plt.show() |
Output:
