{ "cells": [ { "cell_type": "markdown", "metadata": {}, "source": [ "\n# Circles, Wedges and Polygons\n\nThis example demonstrates how to use `.collections.PatchCollection`.\n\nSee also :doc:`/gallery/shapes_and_collections/artist_reference`, which instead\nadds each artist separately to its own Axes.\n" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "collapsed": false }, "outputs": [], "source": [ "import matplotlib.pyplot as plt\nimport numpy as np\n\nfrom matplotlib.collections import PatchCollection\nfrom matplotlib.patches import Circle, Polygon, Wedge\n\n# Fixing random state for reproducibility\nnp.random.seed(19680801)\n\n\nfig, ax = plt.subplots()\n\nresolution = 50 # the number of vertices\nN = 3\nx = np.random.rand(N)\ny = np.random.rand(N)\nradii = 0.1*np.random.rand(N)\npatches = []\nfor x1, y1, r in zip(x, y, radii):\n circle = Circle((x1, y1), r)\n patches.append(circle)\n\nx = np.random.rand(N)\ny = np.random.rand(N)\nradii = 0.1*np.random.rand(N)\ntheta1 = 360.0*np.random.rand(N)\ntheta2 = 360.0*np.random.rand(N)\nfor x1, y1, r, t1, t2 in zip(x, y, radii, theta1, theta2):\n wedge = Wedge((x1, y1), r, t1, t2)\n patches.append(wedge)\n\n# Some limiting conditions on Wedge\npatches += [\n Wedge((.3, .7), .1, 0, 360), # Full circle\n Wedge((.7, .8), .2, 0, 360, width=0.05), # Full ring\n Wedge((.8, .3), .2, 0, 45), # Full sector\n Wedge((.8, .3), .2, 45, 90, width=0.10), # Ring sector\n]\n\nfor i in range(N):\n polygon = Polygon(np.random.rand(N, 2), closed=True)\n patches.append(polygon)\n\ncolors = 100 * np.random.rand(len(patches))\np = PatchCollection(patches, alpha=0.4)\np.set_array(colors)\nax.add_collection(p)\nfig.colorbar(p, ax=ax)\n\nplt.show()" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ ".. admonition:: References\n\n The use of the following functions, methods, classes and modules is shown\n in this example:\n\n - `matplotlib.patches`\n - `matplotlib.patches.Circle`\n - `matplotlib.patches.Wedge`\n - `matplotlib.patches.Polygon`\n - `matplotlib.collections.PatchCollection`\n - `matplotlib.collections.Collection.set_array`\n - `matplotlib.axes.Axes.add_collection`\n - `matplotlib.figure.Figure.colorbar`\n\n" ] } ], "metadata": { "kernelspec": { "display_name": "Python 3", "language": "python", "name": "python3" }, "language_info": { "codemirror_mode": { "name": "ipython", "version": 3 }, "file_extension": ".py", "mimetype": "text/x-python", "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", "version": "3.13.2" } }, "nbformat": 4, "nbformat_minor": 0 }