我根据here
的代码编写了一个简单的脚本我只需要显示点,不需要任何行。
下面的脚本正确地显示了点,但我希望以可配置的方式看到点移动得更快,以帧速率为30fps。
import matplotlib
matplotlib.use('TKAgg')
import numpy as np
from matplotlib import pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
from matplotlib.colors import cnames
from matplotlib import animation
NbOfObjects = 3
fig = plt.figure()
ax = fig.add_axes([0, 0, 1, 1], projection='3d')
ax.axis('on')
ax.set_xlim((-1.5, 1.5))
ax.set_ylim((-1.5, 1.5))
ax.set_zlim((0, 1.5))
ax.set_xlabel('x axis')
ax.set_ylabel('y axis')
ax.set_zlabel('z axis')
# set point-of-view: specified by (altitude degrees, azimuth degrees)
ax.view_init(30, 30)
# choose a different color for each trajectory
colors = plt.cm.jet(np.linspace(0, 1, NbOfObjects))
# set up points
pts = sum([ax.plot([], [], [], 'o', c=c)
for c in colors], [])
data = [[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[1.0, 0.0, 0.0], [0.0, -1.0, 1.0], [-1.0, 1.0, 1.0]],
[[1.0, 0.0, 0.0], [0.0, -1.0, 1.0], [-1.0, 1.0, 1.0]],
[[1.0, 0.0, 0.0], [0.0, -1.0, 1.0], [-1.0, 1.0, 1.0]],
[[1.0, 0.0, 0.0], [0.0, -1.0, 1.0], [-1.0, 1.0, 1.0]],
[[1.0, 0.0, 0.0], [0.0, -1.0, 1.0], [-1.0, 1.0, 1.0]],
[[1.0, 0.0, 0.0], [0.0, -1.0, 1.0], [-1.0, 1.0, 1.0]],
[[1.0, 0.0, 0.0], [0.0, -1.0, 1.0], [-1.0, 1.0, 1.0]],
[[1.0, 0.0, 0.0], [0.0, -1.0, 1.0], [-1.0, 1.0, 1.0]],
[[1.0, 0.0, 0.0], [0.0, -1.0, 1.0], [-1.0, 1.0, 1.0]],
[[1.0, 0.0, 0.0], [0.0, -1.0, 1.0], [-1.0, 1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[1.0, 1.0, 0.0], [0.0, 0.0, 1.0], [-1.0, -1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]],
[[0.0, 0.0, 0.0], [-1.0, -1.0, 1.0], [1.0, 1.0, 1.0]]]
# initialization function: plot the background of each frame
def init():
for pt in pts:
pt.set_data([], [])
pt.set_3d_properties([])
return pts
def animate(i):
print "i: ", i
for pt, positon in zip (pts, data[i]):
x = positon[0]
y = positon[1]
z = positon[2]
pt.set_data(x, y)
pt.set_3d_properties(z)
fig.canvas.draw()
return pts
anim = animation.FuncAnimation(fig, animate, init_func=init, interval=1, frames=len(data), blit=True, repeat=False)
plt.show()
屏幕上的帧显示如何与" interval" animation.FuncAnimation
中的参数? (我无法在不到5秒的时间内显示50帧)
这种设计是否是长时间以30fps处理大量点(10+)的最佳方式? ("数据"在1小时内相当大)。
我还在研究各种示例,但没有一个展示简单的3D动画散点图。
感谢。
答案 0 :(得分:1)
kwargs包括
repeat
,repeat_delay
和interval
:interval
每隔interval
毫秒绘制一个新的帧。repeat
控制在帧序列完成时是否应重复动画。repeat_delay
可选地在重复动画之前添加延迟(以毫秒为单位)。
然而,这仅设置帧速率的上限 - 如果绘制帧需要太长时间,那么您将看到较慢的帧速率
如果你有更多的点,你会想做类似的事情:
data = np.array(data)
# in init, get a single mpl_toolkits.mplot3d.art3d.Line3D object
# the comma is important!
pts, = ax.plot([], [], [], 'o', c=colors)
# in update()
pts.set_data(data[i,:,0], data[i,:,1])
pts.set_3d_properties(data[i,:,2])
这样你就可以消除for循环