Matplotlib 3.0 Cookbook

How to do it...

The following steps of code implement the logic we need:

1. Define the class with the prev and next methods to represent the cluster to be displayed:

class Cluster(object):   ind = 0    # index to move back and forth as we click prev and                  next buttons# Method for next button click   def next(self, event):       self.ind += 1       i = self.ind % len(species)       index = iris['species'] == species[i]       axs.clear()       axs.scatter(x[index], y[index], s=50, marker='o')       axs.set_title(species[i], size=25, color='r')       plt.draw()# Method for prev button click   def prev(self, event):       self.ind -= 1       i = self.ind % len(species)       index = iris['species'] == species[i]       axs.clear()       axs.scatter(x[index], y[index], s=50, marker='o') axs.set_title(species[i], size=25, color='r') ...