.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "gallery/lines_bars_and_markers/fill_betweenx_demo.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_lines_bars_and_markers_fill_betweenx_demo.py>`
        to download the full example code

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

.. _sphx_glr_gallery_lines_bars_and_markers_fill_betweenx_demo.py:


==================
Fill Betweenx Demo
==================

Using `~.Axes.fill_betweenx` to color along the horizontal direction between
two curves.

.. GENERATED FROM PYTHON SOURCE LINES 9-28

.. code-block:: Python

    import matplotlib.pyplot as plt
    import numpy as np

    y = np.arange(0.0, 2, 0.01)
    x1 = np.sin(2 * np.pi * y)
    x2 = 1.2 * np.sin(4 * np.pi * y)

    fig, [ax1, ax2, ax3] = plt.subplots(1, 3, sharey=True, figsize=(6, 6))

    ax1.fill_betweenx(y, 0, x1)
    ax1.set_title('between (x1, 0)')

    ax2.fill_betweenx(y, x1, 1)
    ax2.set_title('between (x1, 1)')
    ax2.set_xlabel('x')

    ax3.fill_betweenx(y, x1, x2)
    ax3.set_title('between (x1, x2)')




.. image-sg:: /gallery/lines_bars_and_markers/images/sphx_glr_fill_betweenx_demo_001.png
   :alt: between (x1, 0), between (x1, 1), between (x1, x2)
   :srcset: /gallery/lines_bars_and_markers/images/sphx_glr_fill_betweenx_demo_001.png, /gallery/lines_bars_and_markers/images/sphx_glr_fill_betweenx_demo_001_2_00x.png 2.00x
   :class: sphx-glr-single-img





.. GENERATED FROM PYTHON SOURCE LINES 29-35

Now fill between x1 and x2 where a logical condition is met. Note this is
different than calling::

  fill_between(y[where], x1[where], x2[where])

because of edge effects over multiple contiguous regions.

.. GENERATED FROM PYTHON SOURCE LINES 35-49

.. code-block:: Python


    fig, [ax, ax1] = plt.subplots(1, 2, sharey=True, figsize=(6, 6))
    ax.plot(x1, y, x2, y, color='black')
    ax.fill_betweenx(y, x1, x2, where=x2 >= x1, facecolor='green')
    ax.fill_betweenx(y, x1, x2, where=x2 <= x1, facecolor='red')
    ax.set_title('fill_betweenx where')

    # Test support for masked arrays.
    x2 = np.ma.masked_greater(x2, 1.0)
    ax1.plot(x1, y, x2, y, color='black')
    ax1.fill_betweenx(y, x1, x2, where=x2 >= x1, facecolor='green')
    ax1.fill_betweenx(y, x1, x2, where=x2 <= x1, facecolor='red')
    ax1.set_title('regions with x2 > 1 are masked')




.. image-sg:: /gallery/lines_bars_and_markers/images/sphx_glr_fill_betweenx_demo_002.png
   :alt: fill_betweenx where, regions with x2 > 1 are masked
   :srcset: /gallery/lines_bars_and_markers/images/sphx_glr_fill_betweenx_demo_002.png, /gallery/lines_bars_and_markers/images/sphx_glr_fill_betweenx_demo_002_2_00x.png 2.00x
   :class: sphx-glr-single-img





.. GENERATED FROM PYTHON SOURCE LINES 50-53

This example illustrates a problem; because of the data gridding, there are
undesired unfilled triangles at the crossover points. A brute-force solution
would be to interpolate all arrays to a very fine grid before plotting.

.. GENERATED FROM PYTHON SOURCE LINES 53-55

.. code-block:: Python


    plt.show()








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

   **Total running time of the script:** (0 minutes 1.079 seconds)


.. _sphx_glr_download_gallery_lines_bars_and_markers_fill_betweenx_demo.py:

.. only:: html

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

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

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

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

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


.. only:: html

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

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