Creating 3D curve plots
As the previous recipe has demonstrated, what we have learned in the previous chapters stands true when creating three-dimensional figures. Let's confirm this by plotting 3D parametric curves. In this recipe, we keep the same dataset as in the previous recipe; that is, the Lorenz attractor.
How to do it…
In 2D, we draw curves by calling pyplot.plot()
. As the previous recipe hinted, all we have to do here is set up an Axes3D
instance and call its plot()
method, as shown in the following code:
import numpy as np from mpl_toolkits.mplot3d import Axes3D import matplotlib.pyplot as plt a, b, c = 10., 28., 8. / 3. def lorenz_map(X, dt = 1e-2): X_dt = np.array([a * (X[1] - X[0]), X[0] * (b - X[2]) - X[1], X[0] * X[1] - c * X[2]]) return X + dt * X_dt points = np.zeros((10000, 3)) X = np.array([.1, .0, .0]) for i in range(points.shape[0]): points[i], X = X, lorenz_map(X) fig = plt.figure() ax = fig.gca(projection...