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

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

.. _sphx_glr_gallery_lines_bars_and_markers_scatter_masked.py:


===============================
Scatter plot with masked values
===============================

Mask some data points and add a line demarking
masked regions.

.. GENERATED FROM PYTHON SOURCE LINES 10-34

.. code-block:: Python

    import matplotlib.pyplot as plt
    import numpy as np

    # Fixing random state for reproducibility
    np.random.seed(19680801)


    N = 100
    r0 = 0.6
    x = 0.9 * np.random.rand(N)
    y = 0.9 * np.random.rand(N)
    area = (20 * np.random.rand(N))**2  # 0 to 10 point radii
    c = np.sqrt(area)
    r = np.sqrt(x ** 2 + y ** 2)
    area1 = np.ma.masked_where(r < r0, area)
    area2 = np.ma.masked_where(r >= r0, area)
    plt.scatter(x, y, s=area1, marker='^', c=c)
    plt.scatter(x, y, s=area2, marker='o', c=c)
    # Show the boundary between the regions:
    theta = np.arange(0, np.pi / 2, 0.01)
    plt.plot(r0 * np.cos(theta), r0 * np.sin(theta))

    plt.show()




.. image-sg:: /gallery/lines_bars_and_markers/images/sphx_glr_scatter_masked_001.png
   :alt: scatter masked
   :srcset: /gallery/lines_bars_and_markers/images/sphx_glr_scatter_masked_001.png, /gallery/lines_bars_and_markers/images/sphx_glr_scatter_masked_001_2_00x.png 2.00x
   :class: sphx-glr-single-img





.. GENERATED FROM PYTHON SOURCE LINES 35-40

.. tags::

   component: marker
   plot-type: scatter
   level: beginner


.. _sphx_glr_download_gallery_lines_bars_and_markers_scatter_masked.py:

.. only:: html

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

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

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

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

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

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

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


.. only:: html

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

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