.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "gallery/introductory/08.quiver.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

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

        :ref:`Go to the end <sphx_glr_download_gallery_introductory_08.quiver.py>`
        to download the full example code

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

.. _sphx_glr_gallery_introductory_08.quiver.py:


======
Quiver
======

2D field of arrows can be plotted using ``ax.quiver``.

.. GENERATED FROM PYTHON SOURCE LINES 8-37



.. image-sg:: /gallery/introductory/images/sphx_glr_08.quiver_001.svg
   :alt: 08.quiver
   :srcset: /gallery/introductory/images/sphx_glr_08.quiver_001.svg
   :class: sphx-glr-single-img





.. code-block:: Python

    import numpy as np

    import matplotlib.pyplot as plt
    from mpltern.datasets import get_triangular_grid


    t, l, r = get_triangular_grid()

    # Arrows. The sum of the three must be zero.
    dt = 1.0 / 3.0 - t
    dl = 1.0 / 3.0 - l
    dr = 1.0 / 3.0 - r

    length = np.sqrt(dt ** 2 + dl ** 2 + dr ** 2)

    fig = plt.figure(figsize=(10.8, 4.8))
    fig.subplots_adjust(left=0.075, right=0.85, wspace=0.3)

    ax = fig.add_subplot(121, projection='ternary')
    pc = ax.quiver(t, l, r, dt, dl, dr)

    ax = fig.add_subplot(122, projection='ternary')
    pc = ax.quiver(t, l, r, dt, dl, dr, length)

    cax = ax.inset_axes([1.05, 0.1, 0.05, 0.9], transform=ax.transAxes)
    colorbar = fig.colorbar(pc, cax=cax)
    colorbar.set_label('Length', rotation=270, va='baseline')

    plt.show()


.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (0 minutes 1.860 seconds)


.. _sphx_glr_download_gallery_introductory_08.quiver.py:

.. only:: html

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

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

      :download:`Download Jupyter notebook: 08.quiver.ipynb <08.quiver.ipynb>`

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

      :download:`Download Python source code: 08.quiver.py <08.quiver.py>`


.. only:: html

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

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