.. 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_donut.py:
=============
Mmh Donuts!!!
=============
Draw donuts (miam!) using `~.path.Path`\s and `~.patches.PathPatch`\es.
This example shows the effect of the path's orientations in a compound path.
.. code-block:: default
import numpy as np
import matplotlib.path as mpath
import matplotlib.patches as mpatches
import matplotlib.pyplot as plt
def wise(v):
if v == 1:
return "CCW"
else:
return "CW"
def make_circle(r):
t = np.arange(0, np.pi * 2.0, 0.01)
t = t.reshape((len(t), 1))
x = r * np.cos(t)
y = r * np.sin(t)
return np.hstack((x, y))
Path = mpath.Path
fig, ax = plt.subplots()
inside_vertices = make_circle(0.5)
outside_vertices = make_circle(1.0)
codes = np.ones(
len(inside_vertices), dtype=mpath.Path.code_type) * mpath.Path.LINETO
codes[0] = mpath.Path.MOVETO
for i, (inside, outside) in enumerate(((1, 1), (1, -1), (-1, 1), (-1, -1))):
# Concatenate the inside and outside subpaths together, changing their
# order as needed
vertices = np.concatenate((outside_vertices[::outside],
inside_vertices[::inside]))
# Shift the path
vertices[:, 0] += i * 2.5
# The codes will be all "LINETO" commands, except for "MOVETO"s at the
# beginning of each subpath
all_codes = np.concatenate((codes, codes))
# Create the Path object
path = mpath.Path(vertices, all_codes)
# Add plot it
patch = mpatches.PathPatch(path, facecolor='#885500', edgecolor='black')
ax.add_patch(patch)
ax.annotate("Outside %s,\nInside %s" % (wise(outside), wise(inside)),
(i * 2.5, -1.5), va="top", ha="center")
ax.set_xlim(-2, 10)
ax.set_ylim(-3, 2)
ax.set_title('Mmm, donuts!')
ax.set_aspect(1.0)
plt.show()
.. image:: /gallery/shapes_and_collections/images/sphx_glr_donut_001.png
:alt: Mmm, donuts!
: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.path
matplotlib.path.Path
matplotlib.patches
matplotlib.patches.PathPatch
matplotlib.patches.Circle
matplotlib.axes.Axes.add_patch
matplotlib.axes.Axes.annotate
matplotlib.axes.Axes.set_aspect
matplotlib.axes.Axes.set_xlim
matplotlib.axes.Axes.set_ylim
matplotlib.axes.Axes.set_title
.. rst-class:: sphx-glr-script-out
Out:
.. code-block:: none
.. _sphx_glr_download_gallery_shapes_and_collections_donut.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: donut.py `
.. container:: sphx-glr-download sphx-glr-download-jupyter
:download:`Download Jupyter notebook: donut.ipynb `
.. only:: html
.. rst-class:: sphx-glr-signature
Keywords: matplotlib code example, codex, python plot, pyplot
`Gallery generated by Sphinx-Gallery
`_