

.. _sphx_glr_gallery_api_patch_collection.py:


============================
Circles, Wedges and Polygons
============================

This example demonstrates how to use patch collections.




.. image:: /gallery/api/images/sphx_glr_patch_collection_001.png
    :align: center





.. code-block:: python


    import numpy as np
    import matplotlib
    from matplotlib.patches import Circle, Wedge, Polygon
    from matplotlib.collections import PatchCollection
    import matplotlib.pyplot as plt

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


    fig, ax = plt.subplots()

    resolution = 50  # the number of vertices
    N = 3
    x = np.random.rand(N)
    y = np.random.rand(N)
    radii = 0.1*np.random.rand(N)
    patches = []
    for x1, y1, r in zip(x, y, radii):
        circle = Circle((x1, y1), r)
        patches.append(circle)

    x = np.random.rand(N)
    y = np.random.rand(N)
    radii = 0.1*np.random.rand(N)
    theta1 = 360.0*np.random.rand(N)
    theta2 = 360.0*np.random.rand(N)
    for x1, y1, r, t1, t2 in zip(x, y, radii, theta1, theta2):
        wedge = Wedge((x1, y1), r, t1, t2)
        patches.append(wedge)

    # Some limiting conditions on Wedge
    patches += [
        Wedge((.3, .7), .1, 0, 360),             # Full circle
        Wedge((.7, .8), .2, 0, 360, width=0.05),  # Full ring
        Wedge((.8, .3), .2, 0, 45),              # Full sector
        Wedge((.8, .3), .2, 45, 90, width=0.10),  # Ring sector
    ]

    for i in range(N):
        polygon = Polygon(np.random.rand(N, 2), True)
        patches.append(polygon)

    colors = 100*np.random.rand(len(patches))
    p = PatchCollection(patches, alpha=0.4)
    p.set_array(np.array(colors))
    ax.add_collection(p)
    fig.colorbar(p, ax=ax)

    plt.show()

**Total running time of the script:** ( 0 minutes  0.083 seconds)



.. container:: sphx-glr-footer


  .. container:: sphx-glr-download

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



  .. container:: sphx-glr-download

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

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

    `Generated by Sphinx-Gallery <https://sphinx-gallery.readthedocs.io>`_
