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_contains() Function
The Axes.get_contains() function in axes module of matplotlib library is used to return the custom contains function of the artist.
Syntax: Axes.get_contains(self)
Parameters: This method does not accept any parameters.
Returns: This method returns the custom contains function of the artist.
Below examples illustrate the matplotlib.axes.Axes.get_contains() function in matplotlib.axes:
Example 1:
# Implementation of matplotlib function import matplotlib.pyplot as plt
from matplotlib.lines import Line2D
import numpy as np
from numpy.random import rand
fig, ax2 = plt.subplots()
ax2.bar( range ( 10 ), rand( 10 ), picker = True )
for label in ax2.get_xticklabels():
label.set_picker( True )
def onpick1(event):
if isinstance (event.artist, Line2D):
thisline = event.artist
xdata = thisline.get_xdata()
ydata = thisline.get_ydata()
ind = event.ind
print ( 'onpick1 line:' ,
np.column_stack([xdata[ind],
ydata[ind]]))
elif isinstance (event.artist, Rectangle):
patch = event.artist
print ( 'onpick1 patch:' , patch.get_path())
elif isinstance (event.artist, Text):
text = event.artist
print ( 'onpick1 text:' , text.get_text())
ax2.set_contains(onpick1) ax2.text( 0.5 , 0.9 ,
"Value Return : " + str (ax2.get_contains()),
fontweight = "bold" , fontsize = 10 )
fig.suptitle('matplotlib.axes.Axes.get_contains() function\ Example', fontweight = "bold" )
plt.show() |
Output:
Example 2:
# Implementation of matplotlib function import matplotlib.pyplot as plt
from matplotlib.lines import Line2D
import numpy as np
from numpy.random import rand
fig, ax2 = plt.subplots()
ax2.bar( range ( 10 ), rand( 10 ), picker = True )
for label in ax2.get_xticklabels():
label.set_picker( True )
def onpick1(event):
if isinstance (event.artist, Line2D):
thisline = event.artist
xdata = thisline.get_xdata()
ydata = thisline.get_ydata()
ind = event.ind
print ( 'onpick1 line:' ,
np.column_stack([xdata[ind],
ydata[ind]]))
elif isinstance (event.artist, Rectangle):
patch = event.artist
print ( 'onpick1 patch:' , patch.get_path())
elif isinstance (event.artist, Text):
text = event.artist
print ( 'onpick1 text:' , text.get_text())
ax2.set_contains(onpick1) ax2.text( 0.5 , 0.9 ,
"Value Return : " + str (ax2.get_contains()),
fontweight = "bold" , fontsize = 10 )
fig.suptitle('matplotlib.axes.Axes.get_contains() function\ Example', fontweight = "bold" )
plt.show() |
Output: