Python: Real World Machine Learning

Plotting 3D scatter plots

In this recipe, we will learn how to plot 3D scatterplots and visualize them in three dimensions.

How to do it…

1. Create a new Python file, and import the following packages:

   import numpy as np
   import matplotlib.pyplot as plt
   from mpl_toolkits.mplot3d import Axes3D

2. Create the empty figure:

   # Create the figure
   fig = plt.figure()
   ax = fig.add_subplot(111, projection='3d')

3. Define the number of values that we should generate:

   # Define the number of values
   n = 250

4. Create a lambda function to generate values in a given range:

   # Create a lambda function to generate the random values in the given range
   f = lambda minval, maxval, n: minval + (maxval - minval) * np.random.rand(n)

5. Generate X, Y, and Z values using this function:

   # Generate the ...