1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
"""
============
Ellipse Demo
============
Draw many ellipses. Here individual ellipses are drawn. Compare this
to the :doc:`Ellipse collection example
</gallery/shapes_and_collections/ellipse_collection>`.
"""
import matplotlib.pyplot as plt
import numpy as np
from matplotlib.patches import Ellipse
# Fixing random state for reproducibility
np.random.seed(19680801)
NUM = 250
ells = [Ellipse(xy=np.random.rand(2) * 10,
width=np.random.rand(), height=np.random.rand(),
angle=np.random.rand() * 360)
for i in range(NUM)]
fig, ax = plt.subplots()
ax.set(xlim=(0, 10), ylim=(0, 10), aspect="equal")
for e in ells:
ax.add_artist(e)
e.set_clip_box(ax.bbox)
e.set_alpha(np.random.rand())
e.set_facecolor(np.random.rand(3))
plt.show()
# %%
# ===============
# Ellipse Rotated
# ===============
#
# Draw many ellipses with different angles.
#
angle_step = 45 # degrees
angles = np.arange(0, 180, angle_step)
fig, ax = plt.subplots()
ax.set(xlim=(-2.2, 2.2), ylim=(-2.2, 2.2), aspect="equal")
for angle in angles:
ellipse = Ellipse((0, 0), 4, 2, angle=angle, alpha=0.1)
ax.add_artist(ellipse)
plt.show()
# %%
#
# .. admonition:: References
#
# The use of the following functions, methods, classes and modules is shown
# in this example:
#
# - `matplotlib.patches`
# - `matplotlib.patches.Ellipse`
# - `matplotlib.axes.Axes.add_artist`
# - `matplotlib.artist.Artist.set_clip_box`
# - `matplotlib.artist.Artist.set_alpha`
# - `matplotlib.patches.Patch.set_facecolor`
|
