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

.. only:: html

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

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

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

.. _sphx_glr_examples_demo_nested_pie.py:


====================
Nested pie chart
====================

.. GENERATED FROM PYTHON SOURCE LINES 6-73



.. image-sg:: /examples/images/sphx_glr_demo_nested_pie_001.png
   :alt: Nested Pie plot with 3d effects
   :srcset: /examples/images/sphx_glr_demo_nested_pie_001.png
   :class: sphx-glr-single-img





.. code-block:: Python

    import numpy as np
    import matplotlib.pyplot as plt

    fig, ax = plt.subplots(num=1, clear=True)

    size = 0.3
    vals = np.array([[60., 32.], [37., 40.], [29., 10.]])

    cmap = plt.colormaps["tab20c"]
    outer_colors = cmap(np.arange(3)*4)
    inner_colors = cmap([1, 2, 5, 6, 9, 10])

    wedges1, _ = ax.pie(vals.sum(axis=1), radius=1, colors=outer_colors,
                        wedgeprops=dict(width=size, edgecolor='w'))

    wedges2, _ = ax.pie(vals.flatten(), radius=0.95-size, colors=inner_colors,
                        wedgeprops=dict(width=size, edgecolor='w'))

    ax.set(aspect=0.6, title='Nested Pie plot with 3d effects')

    # 3d effects
    from matplotlib.colors import LightSource
    from mpl_poormans_3d import Poormans3d, Poormans3dFace
    from mpl_poormans_3d.poormans_3d import ArtistListWithPoormans3d

    ls = LightSource(azdeg=35)

    # We add 3d effects using ArtistListWithPoormans3d and Poomans3dFace. See
    # demo_pie.py.
    patch_list = wedges1 + wedges2

    height = np.array([0, -40])
    kw = dict(fraction=0.3, direction=1)
    kw_face = dict(fraction=0.3)

    al = ArtistListWithPoormans3d(patch_list,
                                  ls, 0.5* height, displacement0=0,
                                  **kw)

    ax.add_artist(al)

    for patch in patch_list:
        patch.set_path_effects([
            Poormans3dFace(ls, 0, **kw_face),
        ])


    # For the inner wedges, We add another depth
    patch_list = wedges2

    height = np.array([0, 40])
    kw = dict(fraction=0.3, direction=-1)
    kw_face = dict(fraction=0.3)

    al = ArtistListWithPoormans3d(patch_list,
                                  ls, 0.5* height, displacement0=0,
                                  **kw)
    al.set_zorder(1.2)
    ax.add_artist(al)

    for patch in patch_list:
        patch.set_path_effects([
            Poormans3dFace(ls, 0.5*height, **kw_face),
        ])
        patch.set_zorder(1.3)

    plt.show()


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

   **Total running time of the script:** (0 minutes 0.210 seconds)


.. _sphx_glr_download_examples_demo_nested_pie.py:

.. only:: html

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

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

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

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

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


.. only:: html

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

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