Matplotlib.axes.Axes.get_legend_handles_labels() in Python
Matplotlib is a library in Python and it is numerical – mathematical extension for NumPy library. The Axes Class contains most of the figure elements: Axis, Tick, Line2D, Text, Polygon, etc., and sets the coordinate system. And the instances of Axes supports callbacks through a callbacks attribute.
matplotlib.axes.Axes.get_legend_handles_labels() Function
The Axes.get_legend_handles_labels() function in axes module of matplotlib library is used to return the handles and labels for legend.
Syntax: Axes.get_legend_handles_labels(self)
Parameters: This method does not accepts any parameters.
Return: This function return the handles and labels for legend.
Below examples illustrate the matplotlib.axes.Axes.get_legend_handles_labels() function in matplotlib.axes:
Example 1:
import matplotlib.pyplot as plt
import numpy as np
fig, ax = plt.subplots()
ax.plot([ 1 , 6 , 3 , 8 , 34 , 13 , 56 , 67 ], color = "green" )
h, l = ax.get_legend_handles_labels()
text = "Legend is present"
if h = = []:
text = "No legend present"
else :
text + = "and labels are : " + str (l)
ax.text( 2.5 , 60 , text, fontweight = "bold" )
fig.suptitle('matplotlib.axes.Axes.get_legend_handles_labels()\
function Example\n', fontweight = "bold" )
fig.canvas.draw()
plt.show()
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Output:
Example 2:
import numpy as np
np.random.seed( 19680801 )
import matplotlib.pyplot as plt
fig, ax = plt.subplots()
for color in [ 'tab:green' , 'tab:blue' , 'tab:orange' ]:
n = 70
x, y = np.random.rand( 2 , n)
scale = 1000.0 * np.random.rand(n)
ax.scatter(x, y, c = color, s = scale, label = color,
alpha = 0.35 )
ax.legend()
ax.grid( True )
h, l = ax.get_legend_handles_labels()
print (h, l)
text = " Legend is present"
if h = = []:
text = "No legend present"
else :
text + = " and labels are : \n" + str (l)
ax.text( 0.15 , 0.45 , text, fontweight = "bold" )
fig.suptitle('matplotlib.axes.Axes.get_legend_handles_labels()\
function Example\n', fontweight = "bold" )
fig.canvas.draw()
plt.show()
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Output:
Last Updated :
19 Apr, 2020
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