.. 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:: python 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 :class: sphx-glr-single-img ------------ References """""""""" The use of the following functions, methods, classes and modules is shown in this example: .. code-block:: python 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 .. _sphx_glr_download_gallery_shapes_and_collections_donut.py: .. only :: html .. container:: sphx-glr-footer :class: sphx-glr-footer-example .. container:: sphx-glr-download :download:`Download Python source code: donut.py ` .. container:: sphx-glr-download :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 `_