Matplotlib.axes.Axes.start_pan() in Python

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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:

Python3

# 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:

Python3

# Implementation of matplotlib function
import matplotlib.pyplot as plt
import numpy as np
   
zambiatek = 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(zambiatek, 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()