.. _sphx_glr_gallery_mplot3d_quiver3d.py: ============== 3D quiver plot ============== Demonstrates plotting directional arrows at points on a 3d meshgrid. .. image:: /gallery/mplot3d/images/sphx_glr_quiver3d_001.png :align: center .. code-block:: python from mpl_toolkits.mplot3d import axes3d import matplotlib.pyplot as plt import numpy as np fig = plt.figure() ax = fig.gca(projection='3d') # Make the grid x, y, z = np.meshgrid(np.arange(-0.8, 1, 0.2), np.arange(-0.8, 1, 0.2), np.arange(-0.8, 1, 0.8)) # Make the direction data for the arrows u = np.sin(np.pi * x) * np.cos(np.pi * y) * np.cos(np.pi * z) v = -np.cos(np.pi * x) * np.sin(np.pi * y) * np.cos(np.pi * z) w = (np.sqrt(2.0 / 3.0) * np.cos(np.pi * x) * np.cos(np.pi * y) * np.sin(np.pi * z)) ax.quiver(x, y, z, u, v, w, length=0.1, normalize=True) plt.show() .. only :: html .. container:: sphx-glr-footer .. container:: sphx-glr-download :download:`Download Python source code: quiver3d.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: quiver3d.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_