.. only:: html
.. note::
:class: sphx-glr-download-link-note
Click :ref:`here ` to download the full example code
.. rst-class:: sphx-glr-example-title
.. _sphx_glr_gallery_shapes_and_collections_patch_collection.py:
============================
Circles, Wedges and Polygons
============================
This example demonstrates how to use
:class:`patch collections <.collections.PatchCollection>`.
.. code-block:: default
import numpy as np
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()
.. image:: /gallery/shapes_and_collections/images/sphx_glr_patch_collection_001.png
:class: sphx-glr-single-img
------------
References
""""""""""
The use of the following functions, methods, classes and modules is shown
in this example:
.. code-block:: default
import matplotlib
matplotlib.patches
matplotlib.patches.Circle
matplotlib.patches.Wedge
matplotlib.patches.Polygon
matplotlib.collections.PatchCollection
matplotlib.collections.Collection.set_array
matplotlib.axes.Axes.add_collection
matplotlib.figure.Figure.colorbar
.. rst-class:: sphx-glr-script-out
Out:
.. code-block:: none
.. _sphx_glr_download_gallery_shapes_and_collections_patch_collection.py:
.. only :: html
.. container:: sphx-glr-footer
:class: sphx-glr-footer-example
.. container:: sphx-glr-download sphx-glr-download-python
:download:`Download Python source code: patch_collection.py `
.. container:: sphx-glr-download sphx-glr-download-jupyter
:download:`Download Jupyter notebook: patch_collection.ipynb `
.. only:: html
.. rst-class:: sphx-glr-signature
Keywords: matplotlib code example, codex, python plot, pyplot
`Gallery generated by Sphinx-Gallery
`_