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Matplotlib.axes.Axes.start_pan() in Python
  • Last Updated : 21 Apr, 2020

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 methos 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:

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