"""
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], "FancyBboxPatch")

# 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() 

　

M:\______\artist_reference.py:49: MatplotlibDeprecationWarning: 
  Passing the radius parameter of __init__() positionally is deprecated 
  since Matplotlib 3.6; the parameter will become keyword-only two minor 
  releases later.
  polygon = mpatches.RegularPolygon(grid[3], 5, 0.1) 

Traceback (most recent call last):
  File "E:\______\artist_reference.py", line 49, in 
    polygon = mpatches.RegularPolygon(grid[3], 5, 0.1)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: RegularPolygon.__init__() takes 3 positional arguments but 4 were given 

"""
.. _artist_reference:

================================
Reference for Matplotlib artists
================================

This example displays several of Matplotlib's graphics primitives (artists).
A full list of artists is documented at :ref:`the artist API `.

See also :doc:`/gallery/shapes_and_collections/patch_collection`, which groups
all artists into a single `.PatchCollection` instead.

Copyright (c) 2010, Bartosz Telenczuk
BSD License
"""

import matplotlib.pyplot as plt

import matplotlib as mpl
import matplotlib.lines as mlines
import matplotlib.patches as mpatches
import matplotlib.path as mpath

# Prepare the data for the PathPatch below.
Path = mpath.Path
codes, verts = zip(*[
    (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])])

artists = [
    mpatches.Circle((0, 0), 0.1, ec="none"),
    mpatches.Rectangle((-0.025, -0.05), 0.05, 0.1, ec="none"),
    mpatches.Wedge((0, 0), 0.1, 30, 270, ec="none"),
    mpatches.RegularPolygon((0, 0), 5, radius=0.1),
    mpatches.Ellipse((0, 0), 0.2, 0.1),
    mpatches.Arrow(-0.05, -0.05, 0.1, 0.1, width=0.1),
    mpatches.PathPatch(mpath.Path(verts, codes), ec="none"),
    mpatches.FancyBboxPatch((-0.025, -0.05), 0.05, 0.1, ec="none",
                            boxstyle=mpatches.BoxStyle("Round", pad=0.02)),
    mlines.Line2D([-0.06, 0.0, 0.1], [0.05, -0.05, 0.05], lw=5),
]

axs = plt.figure(figsize=(6, 6), layout="constrained").subplots(3, 3)
for i, (ax, artist) in enumerate(zip(axs.flat, artists)):
    artist.set(color=mpl.colormaps["hsv"](i / len(artists)))
    ax.add_artist(artist)
    ax.set(title=type(artist).__name__,
           aspect=1, xlim=(-.2, .2), ylim=(-.2, .2))
    ax.set_axis_off()
plt.show()

# %%
#
# .. admonition:: References
#
#    The use of the following functions, methods, classes and modules is shown
#    in this example:
#
#    - `matplotlib.path`
#    - `matplotlib.path.Path`
#    - `matplotlib.lines`
#    - `matplotlib.lines.Line2D`
#    - `matplotlib.patches`
#    - `matplotlib.patches.Circle`
#    - `matplotlib.patches.Ellipse`
#    - `matplotlib.patches.Wedge`
#    - `matplotlib.patches.Rectangle`
#    - `matplotlib.patches.Arrow`
#    - `matplotlib.patches.PathPatch`
#    - `matplotlib.patches.FancyBboxPatch`
#    - `matplotlib.patches.RegularPolygon`
#    - `matplotlib.axes.Axes.add_artist` 

　Python 3.11.6 (matplotlib 3.7.1) 及び Python 3.12.0 (matplotlib 3.8.1) 共に、正常実行です。

　

• 2023/12/09 Ver=1.04 Python 3.12.0 (matplotlib 3.8.1)で確認
• 2023/12/09 Ver=1.04 Python 3.11.6 (matplotlib 3.7.1)で確認
• 2023/04/05 Ver=1.03 Python 3.11.2 で確認
• 2020/11/02 Ver=1.01 Python 3.7.8 で確認
• 2018/12/06 Ver=1.01 初版リリース

Top