Matplotlib.axes.Axes.start_pan() 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.start_pan() Function

The Axes.start_pan() function in axes module of matplotlib library is called when a pan operation has started. 

Syntax: Axes.start_pan(self, x, y, button)
Parameters: This method accept the following parameters that are described below: 

• x, y: These parameter are the mouse coordinates in display coords.
• button: This parameter is the mouse button number: 
  
  • 1: LEFT
  • 2: MIDDLE
  • 3: RIGHT

Returns: This methods does not return any value. 
 

Below examples illustrate the matplotlib.axes.Axes.start_pan() function in matplotlib.axes:

Example 1:  

# Implementation of matplotlib function
import matplotlib.pyplot as plt
import numpy as np
 
np.random.seed(10**7)
data = np.random.normal(0, 5, 100)
 
fig, ax1 = plt.subplots()
val = ax1.violinplot(data)
ax1.start_pan(1, 0, 3)
  
ax1.set_title('matplotlib.axes.Axes.start_pan() Example')
plt.show()

Output: 

Example 2: 

# Implementation of matplotlib function
import matplotlib.pyplot as plt
import numpy as np
  
geeks = np.array([24.40, 110.25, 20.05, 
                  22.00, 61.90, 7.80, 
                  15.00, 22.80, 34.90,
                  57.30])
  
fig, ax = plt.subplots()
ax.acorr(geeks, maxlags = 9)

ax.set_ylabel('Y-axis')
ax.start_pan(0, 0.6, 1)
  
ax.set_title('matplotlib.axes.Axes.start_pan() Example')
plt.show()

Output: