Python Machine Learning Cookbook - Second Edition

How to do it...

Let's look at how to animate bubble plots:

1. Create a new Python file and import the following packages (the full code is in the dynamic_bubble_plot.py file that's already been provided to you):

import numpy as np 
import matplotlib.pyplot as plt 
from matplotlib.animation import FuncAnimation  

2. Let's define a tracker function that will dynamically update the bubble plot:

def tracker(cur_num): 
    # Get the current index  
    cur_index = cur_num % num_points 

3. Define the color:

    # Set the color of the datapoints  
    datapoints['color'][:, 3] = 1.0 

4. Update the size of the circles:

    # Update the size of the circles  
    datapoints['size'] += datapoints['growth'] 

5. Update the position of the oldest data point in the set:

 # Update the position ...