# Straight from the official gallery of matplotlib# https://matplotlib.org/stable/gallery/mplot3d/contour3d_3.htmlfrommpl_toolkits.mplot3dimportaxes3dimportmatplotlib.pyplotaspltfrommatplotlibimportcmax=plt.figure().add_subplot(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 graph.ax.contour(X,Y,Z,zdir='z',offset=-100,cmap=cm.coolwarm)ax.contour(X,Y,Z,zdir='x',offset=-40,cmap=cm.coolwarm)ax.contour(X,Y,Z,zdir='y',offset=40,cmap=cm.coolwarm)ax.set(xlim=(-40,40),ylim=(-40,40),zlim=(-100,100),xlabel='X',ylabel='Y',zlabel='Z')plt.show()