.. DO NOT EDIT. .. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY. .. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE: .. "gallery/mplot3d/surface3d_radial.py" .. LINE NUMBERS ARE GIVEN BELOW. .. only:: html .. note:: :class: sphx-glr-download-link-note Click :ref:`here ` to download the full example code .. rst-class:: sphx-glr-example-title .. _sphx_glr_gallery_mplot3d_surface3d_radial.py: ================================= 3D surface with polar coordinates ================================= Demonstrates plotting a surface defined in polar coordinates. Uses the reversed version of the YlGnBu color map. Also demonstrates writing axis labels with latex math mode. Example contributed by Armin Moser. .. GENERATED FROM PYTHON SOURCE LINES 12-39 .. image:: /gallery/mplot3d/images/sphx_glr_surface3d_radial_001.png :alt: surface3d radial :class: sphx-glr-single-img .. code-block:: default import matplotlib.pyplot as plt import numpy as np fig = plt.figure() ax = fig.add_subplot(111, projection='3d') # Create the mesh in polar coordinates and compute corresponding Z. r = np.linspace(0, 1.25, 50) p = np.linspace(0, 2*np.pi, 50) R, P = np.meshgrid(r, p) Z = ((R**2 - 1)**2) # Express the mesh in the cartesian system. X, Y = R*np.cos(P), R*np.sin(P) # Plot the surface. ax.plot_surface(X, Y, Z, cmap=plt.cm.YlGnBu_r) # Tweak the limits and add latex math labels. ax.set_zlim(0, 1) ax.set_xlabel(r'$\phi_\mathrm{real}$') ax.set_ylabel(r'$\phi_\mathrm{im}$') ax.set_zlabel(r'$V(\phi)$') plt.show() .. _sphx_glr_download_gallery_mplot3d_surface3d_radial.py: .. only :: html .. container:: sphx-glr-footer :class: sphx-glr-footer-example .. container:: sphx-glr-download sphx-glr-download-python :download:`Download Python source code: surface3d_radial.py ` .. container:: sphx-glr-download sphx-glr-download-jupyter :download:`Download Jupyter notebook: surface3d_radial.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature Keywords: matplotlib code example, codex, python plot, pyplot `Gallery generated by Sphinx-Gallery `_