
.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "gallery/mplot3d/lines3d.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. meta::
        :keywords: codex

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_gallery_mplot3d_lines3d.py>`
        to download the full example code.

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_gallery_mplot3d_lines3d.py:


================
Parametric curve
================

This example demonstrates plotting a parametric curve in 3D.

.. GENERATED FROM PYTHON SOURCE LINES 8-26

.. code-block:: Python


    import matplotlib.pyplot as plt
    import numpy as np

    ax = plt.figure().add_subplot(projection='3d')

    # Prepare arrays x, y, z
    theta = np.linspace(-4 * np.pi, 4 * np.pi, 100)
    z = np.linspace(-2, 2, 100)
    r = z**2 + 1
    x = r * np.sin(theta)
    y = r * np.cos(theta)

    ax.plot(x, y, z, label='parametric curve')
    ax.legend()

    plt.show()


.. GENERATED FROM PYTHON SOURCE LINES 27-30

.. tags::
   plot-type: 3D,
   level: beginner


.. _sphx_glr_download_gallery_mplot3d_lines3d.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: lines3d.ipynb <lines3d.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: lines3d.py <lines3d.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: lines3d.zip <lines3d.zip>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_
