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anntzeranntzer
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Simplify "artist reference" example.
In particular, add each artist directly to its own axes, instead of shifting each of them by some offset and grouping all of them together in a PatchCollection. Note that this makes the example no longer showcase the use of PatchCollection, but at least based on the docstring that was not the intent of the example anyways, and PatchCollection is showcased elsewhere (in the patch_collection.py example, in particular).
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‎examples/shapes_and_collections/artist_reference.py

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@@ -3,66 +3,22 @@
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Reference for Matplotlib artists
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================================
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This example displays several of Matplotlib's graphics primitives (artists)
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drawn using matplotlib API. A full list of artists and the documentation is
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available at :ref:`the artist API <artist-api>`.
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This example displays several of Matplotlib's graphics primitives (artists).
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A full list of artists is documented at :ref:`the artist API <artist-api>`.
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Copyright (c) 2010, Bartosz Telenczuk
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BSD License
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"""
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import matplotlib.pyplot as plt
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import numpy as np
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import matplotlib.path as mpath
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import matplotlib as mpl
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import matplotlib.lines as mlines
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import matplotlib.patches as mpatches
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from matplotlib.collections import PatchCollection
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def label(xy, text):
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y = xy[1] - 0.15 # shift y-value for label so that it's below the artist
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plt.text(xy[0], y, text, ha="center", family='sans-serif', size=14)
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fig, ax = plt.subplots()
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# create 3x3 grid to plot the artists
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grid = np.mgrid[0.2:0.8:3j, 0.2:0.8:3j].reshape(2, -1).T
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patches = []
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# add a circle
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circle = mpatches.Circle(grid[0], 0.1, ec="none")
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patches.append(circle)
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label(grid[0], "Circle")
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# add a rectangle
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rect = mpatches.Rectangle(grid[1] - [0.025, 0.05], 0.05, 0.1, ec="none")
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patches.append(rect)
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label(grid[1], "Rectangle")
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# add a wedge
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wedge = mpatches.Wedge(grid[2], 0.1, 30, 270, ec="none")
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patches.append(wedge)
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label(grid[2], "Wedge")
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# add a Polygon
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polygon = mpatches.RegularPolygon(grid[3], 5, radius=0.1)
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patches.append(polygon)
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label(grid[3], "Polygon")
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# add an ellipse
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ellipse = mpatches.Ellipse(grid[4], 0.2, 0.1)
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patches.append(ellipse)
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label(grid[4], "Ellipse")
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# add an arrow
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arrow = mpatches.Arrow(grid[5, 0] - 0.05, grid[5, 1] - 0.05, 0.1, 0.1,
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width=0.1)
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patches.append(arrow)
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label(grid[5], "Arrow")
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import matplotlib.path as mpath
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import matplotlib.pyplot as plt
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# add a path patch
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# Prepare the data for the PathPatch below.
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Path = mpath.Path
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path_data = [
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codes, verts = zip(*[
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(Path.MOVETO, [0.018, -0.11]),
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(Path.CURVE4, [-0.031, -0.051]),
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(Path.CURVE4, [-0.115, 0.073]),
@@ -71,35 +27,28 @@ def label(xy, text):
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(Path.CURVE4, [0.043, 0.121]),
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(Path.CURVE4, [0.075, -0.005]),
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(Path.CURVE4, [0.035, -0.027]),
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(Path.CLOSEPOLY, [0.018, -0.11])]
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codes, verts = zip(*path_data)
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path = mpath.Path(verts + grid[6], codes)
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patch = mpatches.PathPatch(path)
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patches.append(patch)
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label(grid[6], "PathPatch")
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# add a fancy box
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fancybox = mpatches.FancyBboxPatch(
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grid[7] - [0.025, 0.05], 0.05, 0.1,
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boxstyle=mpatches.BoxStyle("Round", pad=0.02))
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patches.append(fancybox)
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label(grid[7], "FancyBboxPatch")
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# add a line
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x, y = ([-0.06, 0.0, 0.1], [0.05, -0.05, 0.05])
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line = mlines.Line2D(x + grid[8, 0], y + grid[8, 1], lw=5., alpha=0.3)
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label(grid[8], "Line2D")
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colors = np.linspace(0, 1, len(patches))
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collection = PatchCollection(patches, cmap=plt.cm.hsv, alpha=0.3)
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collection.set_array(colors)
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ax.add_collection(collection)
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ax.add_line(line)
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plt.axis('equal')
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plt.axis('off')
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plt.tight_layout()
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(Path.CLOSEPOLY, [0.018, -0.11])])
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artists = [
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mpatches.Circle((0, 0), 0.1, ec="none"),
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mpatches.Rectangle((-0.025, -0.05), 0.05, 0.1, ec="none"),
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mpatches.Wedge((0, 0), 0.1, 30, 270, ec="none"),
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mpatches.RegularPolygon((0, 0), 5, radius=0.1),
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mpatches.Ellipse((0, 0), 0.2, 0.1),
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mpatches.Arrow(-0.05, -0.05, 0.1, 0.1, width=0.1),
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mpatches.PathPatch(mpath.Path(verts, codes), ec="none"),
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mpatches.FancyBboxPatch((-0.025, -0.05), 0.05, 0.1, ec="none",
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boxstyle=mpatches.BoxStyle("Round", pad=0.02)),
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mlines.Line2D([-0.06, 0.0, 0.1], [0.05, -0.05, 0.05], lw=5),
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]
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axs = plt.figure(figsize=(6, 6), layout="constrained").subplots(3, 3)
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for i, (ax, artist) in enumerate(zip(axs.flat, artists)):
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artist.set(color=mpl.colormaps["hsv"](i / len(artists)))
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ax.add_artist(artist)
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ax.set(title=type(artist).__name__,
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aspect=1, xlim=(-.2, .2), ylim=(-.2, .2))
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ax.set_axis_off()
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plt.show()
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#############################################################################
@@ -122,8 +71,4 @@ def label(xy, text):
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# - `matplotlib.patches.PathPatch`
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# - `matplotlib.patches.FancyBboxPatch`
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# - `matplotlib.patches.RegularPolygon`
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# - `matplotlib.collections`
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# - `matplotlib.collections.PatchCollection`
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# - `matplotlib.cm.ScalarMappable.set_array`
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# - `matplotlib.axes.Axes.add_collection`
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# - `matplotlib.axes.Axes.add_line`
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# - `matplotlib.axes.Axes.add_artist`

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