| """ | |
| ===================== | |
| 3D surface (colormap) | |
| ===================== | |
| Demonstrates plotting a 3D surface colored with the coolwarm colormap. | |
| The surface is made opaque by using ``antialiased=False``. | |
| Also demonstrates using the `.LinearLocator` and custom formatting for the | |
| z axis tick labels. | |
| """ | |
| import matplotlib.pyplot as plt | |
| import numpy as np | |
| from matplotlib import cm | |
| from matplotlib.ticker import LinearLocator | |
| fig, ax = plt.subplots(subplot_kw={"projection": "3d"}) | |
| # Make data. | |
| X = np.arange(-5, 5, 0.25) | |
| Y = np.arange(-5, 5, 0.25) | |
| X, Y = np.meshgrid(X, Y) | |
| R = np.sqrt(X**2 + Y**2) | |
| Z = np.sin(R) | |
| # Plot the surface. | |
| surf = ax.plot_surface(X, Y, Z, cmap=cm.coolwarm, | |
| linewidth=0, antialiased=False) | |
| # Customize the z axis. | |
| ax.set_zlim(-1.01, 1.01) | |
| ax.zaxis.set_major_locator(LinearLocator(10)) | |
| # A StrMethodFormatter is used automatically | |
| ax.zaxis.set_major_formatter('{x:.02f}') | |
| # Add a color bar which maps values to colors. | |
| fig.colorbar(surf, shrink=0.5, aspect=5) | |
| plt.show() | |
| # %% | |
| # | |
| # .. admonition:: References | |
| # | |
| # The use of the following functions, methods, classes and modules is shown | |
| # in this example: | |
| # | |
| # - `matplotlib.pyplot.subplots` | |
| # - `matplotlib.axis.Axis.set_major_formatter` | |
| # - `matplotlib.axis.Axis.set_major_locator` | |
| # - `matplotlib.ticker.LinearLocator` | |
| # - `matplotlib.ticker.StrMethodFormatter` | |