.. _shapes_and_collections-artist_reference:

shapes_and_collections example code: artist_reference.py
========================================================



.. plot:: /home/tcaswell/source/my_source/matplotlib/doc/mpl_examples/shapes_and_collections/artist_reference.py

::

    """
    Reference for matplotlib artists
    
    This example displays several of matplotlib's graphics primitives (artists)
    drawn using matplotlib API. A full list of artists and the documentation is
    available at http://matplotlib.org/api/artist_api.html.
    
    Copyright (c) 2010, Bartosz Telenczuk
    BSD License
    """
    import matplotlib.pyplot as plt
    plt.rcdefaults()
    
    import numpy as np
    import matplotlib.pyplot as plt
    import matplotlib.path as mpath
    import matplotlib.lines as mlines
    import matplotlib.patches as mpatches
    from matplotlib.collections import PatchCollection
    
    
    def label(xy, text):
        y = xy[1] - 0.15  # shift y-value for label so that it's below the artist
        plt.text(xy[0], y, text, ha="center", family='sans-serif', size=14)
    
    
    fig, ax = plt.subplots()
    # create 3x3 grid to plot the artists
    grid = np.mgrid[0.2:0.8:3j, 0.2:0.8:3j].reshape(2, -1).T
    
    patches = []
    
    # add a circle
    circle = mpatches.Circle(grid[0], 0.1, ec="none")
    patches.append(circle)
    label(grid[0], "Circle")
    
    # add a rectangle
    rect = mpatches.Rectangle(grid[1] - [0.025, 0.05], 0.05, 0.1, ec="none")
    patches.append(rect)
    label(grid[1], "Rectangle")
    
    # add a wedge
    wedge = mpatches.Wedge(grid[2], 0.1, 30, 270, ec="none")
    patches.append(wedge)
    label(grid[2], "Wedge")
    
    # add a Polygon
    polygon = mpatches.RegularPolygon(grid[3], 5, 0.1)
    patches.append(polygon)
    label(grid[3], "Polygon")
    
    # add an ellipse
    ellipse = mpatches.Ellipse(grid[4], 0.2, 0.1)
    patches.append(ellipse)
    label(grid[4], "Ellipse")
    
    # add an arrow
    arrow = mpatches.Arrow(grid[5, 0] - 0.05, grid[5, 1] - 0.05, 0.1, 0.1, width=0.1)
    patches.append(arrow)
    label(grid[5], "Arrow")
    
    # add a path patch
    Path = mpath.Path
    path_data = [
        (Path.MOVETO, [0.018, -0.11]),
        (Path.CURVE4, [-0.031, -0.051]),
        (Path.CURVE4, [-0.115,  0.073]),
        (Path.CURVE4, [-0.03 ,  0.073]),
        (Path.LINETO, [-0.011,  0.039]),
        (Path.CURVE4, [0.043,  0.121]),
        (Path.CURVE4, [0.075, -0.005]),
        (Path.CURVE4, [0.035, -0.027]),
        (Path.CLOSEPOLY, [0.018, -0.11])
        ]
    codes, verts = zip(*path_data)
    path = mpath.Path(verts + grid[6], codes)
    patch = mpatches.PathPatch(path)
    patches.append(patch)
    label(grid[6], "PathPatch")
    
    # add a fancy box
    fancybox = mpatches.FancyBboxPatch(
        grid[7] - [0.025, 0.05], 0.05, 0.1,
        boxstyle=mpatches.BoxStyle("Round", pad=0.02))
    patches.append(fancybox)
    label(grid[7], "FancyBoxPatch")
    
    # add a line
    x, y = np.array([[-0.06, 0.0, 0.1], [0.05, -0.05, 0.05]])
    line = mlines.Line2D(x + grid[8, 0], y + grid[8, 1], lw=5., alpha=0.3)
    label(grid[8], "Line2D")
    
    colors = np.linspace(0, 1, len(patches))
    collection = PatchCollection(patches, cmap=plt.cm.hsv, alpha=0.3)
    collection.set_array(np.array(colors))
    ax.add_collection(collection)
    ax.add_line(line)
    
    plt.subplots_adjust(left=0, right=1, bottom=0, top=1)
    plt.axis('equal')
    plt.axis('off')
    
    plt.show()
    

Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)