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. There are various plots which can be used in Pyplot are Line Plot, Contour, Histogram, Scatter, 3D Plot, etc.
matplotlib.pyplot.fignum_exists() method
The fignum_exists() method in pyplot module of matplotlib library is used to get whether the figure with the given id exists.
Syntax: matplotlib.pyplot.fignum_exists(num)
Parameters:
num: This parameter is the figure number.Returns: This method returns whether the figure with the given id exists or not.
Below examples illustrate the matplotlib.pyplot.fignum_exists() function in matplotlib.pyplot:
Example 1:
#Implementation of matplotlib function import matplotlib.pyplot as plt import numpy as np x = np.arange(20) / 50y = (x + 0.1)*3 val1 = [True, False] * 10val2 = [False, True] * 10 plt.errorbar(x, y, xerr=0.1, xlolims=True, label='Line 1') y = (x + 0.3)*3 y = (x + 0.6)*4 plt.errorbar(x + 1.2, y, xerr=0.1, xuplims=True, label='Line 3') plt.legend() plt.text(0.5, 3.7, "Figure 1 Exists ? " + str(plt.fignum_exists(1)) , fontweight="bold") plt.title('matplotlib.pyplot.fignum_exists()function\ Example' ,fontweight="bold") plt.show() |
Output:
Example 2:
# Implementation of matplotlib function import numpy as np import matplotlib.pyplot as plt x = np.linspace(0, 10, 500) y = np.sin(x**2)+np.cos(x) plt.plot(x, y, label ='Line 1') plt.plot(x, y - 0.6, label ='Line 2') plt.text(2.5, 1.9, "Figure 2 Exists ? " + str(plt.fignum_exists(2)), fontweight ="bold") plt.title('matplotlib.pyplot.fignum_exists()function\ Example', fontweight ="bold") plt.show() |
Output:
