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我是matplotlib動畫的新手，我正在試圖爲散點圖創建動畫，點向右移動時會逐漸變紅，而向左移動的點會逐漸變爲藍色。代碼不能完美工作，因爲它不會逐漸改變點的顏色。當我暫停動畫並使其最大化時，顏色的逐漸變化突然出現，當我播放它時，它也是一樣的。 Here是動畫鏈接。最終的圖像應該是這樣的： 
但是，動畫並未顯示顏色逐漸變化，因爲您可以在視頻中看到。Matplotlib動畫散點圖python。逐漸改變點的顏色
這是代碼，我非常感謝你的幫助。由於
import matplotlib.pyplot as plt
import matplotlib.animation as animation
import numpy as np
import pandas as pd
class AnimatedScatter(object):
"""An animated scatter plot using matplotlib.animations.FuncAnimation."""
def __init__(self, numpoints=5):
self.numpoints = numpoints
self.stream = self.data_stream()
# Setup the figure and axes...
self.fig, self.ax = plt.subplots()
# Then setup FuncAnimation.
self.ani = animation.FuncAnimation(self.fig, self.update, interval=500,
init_func=self.setup_plot, blit=True,repeat=False)
self.fig.canvas.mpl_connect('button_press_event',self.onClick)
#self.ani.save("animation.mp4")
def setup_plot(self):
"""Initial drawing of the scatter plot."""
t=next(self.stream)
x, y, c = t[:,0],t[:,1],t[:,2]
self.scat = self.ax.scatter(x, y, c=c, s=50, animated=True)
self.ax.axis([-15, 15, -10, 10])
# For FuncAnimation's sake, we need to return the artist we'll be using
# Note that it expects a sequence of artists, thus the trailing comma.
return self.scat,
def data_stream(self):
#f=pd.read_csv("crc_viz.csv")
columns = ['TbyN','CbyS']
#f=f[['TbyN','CbyS']]
index=range(1,self.numpoints+1)
x=10*(np.ones((self.numpoints,1))-2*np.random.random((self.numpoints,1)))
y = 5*(np.ones((self.numpoints,1))-2*np.random.random((self.numpoints,1)))
f=np.column_stack((x,y))
f=pd.DataFrame(f,columns=columns)
print f
f['new_cbys'] = f['CbyS']
f['new_cbys'][f['new_cbys']<0] = -1
f['new_cbys'][f['new_cbys']>0] = 1
f=f[:self.numpoints]
cbys=np.array(list(f['CbyS']))
sign = np.array(list(f['new_cbys']))
x = np.array([0]*self.numpoints)
y = np.array(f['TbyN'])
c = np.array([0.5]*self.numpoints)
t = [(255,0,0) for i in range(self.numpoints)]
data=np.column_stack((x,y,c))
x = data[:, 0]
c = data[:,2]
while True:
#print xy
#print cbys
if not pause:
for i in range(len(x)):
if sign[i]==1:
if x[i]<cbys[i]-0.1:
x[i]+=0.1
c[i]+=0.05
else:
x[i]=cbys[i]
elif sign[i]==-1:
if x[i]>cbys[i]+0.1:
x[i]-=0.1
c[i]-=0.05
else:
x[i]=cbys[i]
print c
#print data
#print c
yield data
def onClick(self,event):
global pause
pause ^=True
def update(self, i):
"""Update the scatter plot."""
data = next(self.stream)
print data[:,2]
# Set x and y data...
self.scat.set_offsets(data[:, :2])
# Set colors..
self.scat.set_array(data[:,2])
return self.scat,
def save(self):
plt.rcParams['animation.ffmpeg_path'] = 'C:\\ffmpeg\\bin\\ffmpeg.exe'
self.mywriter = animation.FFMpegWriter()
self.ani.save("myMovie.mp4",writer=self.mywriter)
self.show()
def show(self):
#mng = plt.get_current_fig_manager()
#mng.window.state('zoomed')
plt.show()
pause = False
if __name__ == '__main__':
a = AnimatedScatter(10)
a.show()
#a.save()