将轮廓轮廓投影到图形上
演示显示3D表面,同时还将轮廓“轮廓”投影到图形的“墙壁”上。
有关填充版本,请参见contourf3d_demo2。

from mpl_toolkits.mplot3d import axes3dimport matplotlib.pyplot as pltfrom matplotlib import cmfig = plt.figure()ax = fig.gca(projection='3d')X, Y, Z = axes3d.get_test_data(0.05)# Plot the 3D surfaceax.plot_surface(X, Y, Z, rstride=8, cstride=8, alpha=0.3)# Plot projections of the contours for each dimension. By choosing offsets# that match the appropriate axes limits, the projected contours will sit on# the 'walls' of the graphcset = ax.contour(X, Y, Z, zdir='z', offset=-100, cmap=cm.coolwarm)cset = ax.contour(X, Y, Z, zdir='x', offset=-40, cmap=cm.coolwarm)cset = ax.contour(X, Y, Z, zdir='y', offset=40, cmap=cm.coolwarm)ax.set_xlim(-40, 40)ax.set_ylim(-40, 40)ax.set_zlim(-100, 100)ax.set_xlabel('X')ax.set_ylabel('Y')ax.set_zlabel('Z')plt.show()
