极客教程Matplotlib.artist.artist.set_animated()
Python matplotlib库的artist模块中的set_animated()方法用于设置artist的动画状态。
语法:Artist.set_animated(self, b)
参数:该方法接受以下参数。
- b:布尔值。
Returns:该方法不返回任何值。
下面的例子说明了matplotlib中的matplotlib.artist.artist.set_animated()函数:
示例1
# Implementation of matplotlib function
from matplotlib.artist import Artist
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation
data = np.array([[1, 2, 3, 4, 5],
[7, 4, 9, 2, 3]])
fig = plt.figure()
ax = plt.axes(xlim =(0, 20), ylim =(0, 20))
line, = ax.plot([], [], 'r-')
annotation = ax.annotate('',
xy =(data[0][0],
data[1][0]))
Artist.set_animated(annotation, True)
def init():
return line, annotation
def update(num):
newData = np.array([[1 + num,
2 + num / 2,
3,
4 - num / 4,
5 + num],
[7, 4,
9 + num / 3,
2, 3]])
line.set_data(newData)
return line, annotation
anim = animation.FuncAnimation(fig,
update,
frames = 25,
init_func = init,
interval = 200,
blit = True)
fig.suptitle('matplotlib.artist.Artist.set_animated()\
function Example', fontweight ="bold")
plt.show()
示例2
# Implementation of matplotlib function
from matplotlib.artist import Artist
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation
fig, ax = plt.subplots()
ax.set_xlim([-1, 1])
ax.set_ylim([-1, 1])
L = 50
theta = np.linspace(0, 2 * np.pi, L)
r = np.ones_like(theta)
x = r * np.cos(theta)
y = r * np.sin(theta)
line, = ax.plot(1, 0, 'ro')
annotation = ax.annotate(
'annotation', xy =(1, 0), xytext =(-1, 0),
arrowprops = {'arrowstyle': "->"}
)
Artist.set_animated(annotation, False)
def update(i):
new_x = x[i % L]
new_y = y[i % L]
line.set_data(new_x, new_y)
annotation.set_position((-new_x, -new_y))
annotation.xy = (new_x, new_y)
return line, annotation
ani = animation.FuncAnimation(
fig, update, interval = 500, blit = False
)
fig.suptitle('matplotlib.artist.Artist.set_animated()\
function Example', fontweight ="bold")
plt.show()