感谢您抽出时间来阅读我的问题,我已经张贴SO所以这里去第一次......Matplotlib动画多行和文本
我使用matplotlib.animation.FuncAnimation动画绘制时间序列数据
我通过遍历列表并从numpy数组中切片数据来绘制多条线。 这工作正常,但我也想添加文字到动画剧情和描述帧数。
我已在下面包含示例代码。
我正在尝试从animate函数返回一个线对象列表和一个文本对象。 我收到一个属性错误,当我尝试这样做:
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Python27\lib\lib-tk\Tkinter.py", line 1470, in __call__
return self.func(*args)
File "C:\Python27\lib\lib-tk\Tkinter.py", line 531, in callit
func(*args)
File "C:\Python27\lib\site-packages\matplotlib\backends\backend_tkagg.py", line 141, in _on_timer
TimerBase._on_timer(self)
File "C:\Python27\lib\site-packages\matplotlib\backend_bases.py", line 1117, in _on_timer
ret = func(*args, **kwargs)
File "C:\Python27\lib\site-packages\matplotlib\animation.py", line 773, in _step
still_going = Animation._step(self, *args)
File "C:\Python27\lib\site-packages\matplotlib\animation.py", line 632, in _step
self._draw_next_frame(framedata, self._blit)
File "C:\Python27\lib\site-packages\matplotlib\animation.py", line 652, in _draw_next_frame
self._post_draw(framedata, blit)
File "C:\Python27\lib\site-packages\matplotlib\animation.py", line 675, in _post_draw
self._blit_draw(self._drawn_artists, self._blit_cache)
File "C:\Python27\lib\site-packages\matplotlib\animation.py", line 688, in _blit_draw
if a.axes not in bg_cache:
AttributeError: 'list' object has no attribute 'axes'
但是,说我有两个线对象的列表,如果我单独返回的对象,例如
return lines[0],lines[1], timetext
我没有收到任何错误。
任何想法?
干杯 凡妮莎
import numpy
import matplotlib.pyplot as plt
import matplotlib.animation as animation
npdata = numpy.random.randint(100, size=(5,6,10))
plotlays, plotcols = [2,5], ["black","red"]
fig = plt.figure()
ax = plt.axes(xlim=(0, numpy.shape(npdata)[0]), ylim=(0, numpy.max(npdata)))
timetext = ax.text(0.5,50,'')
lines = []
for index,lay in enumerate(plotlays):
lobj = ax.plot([],[],lw=2,color=plotcols[index])[0]
lines.append(lobj)
def init():
for line in lines:
line.set_data([],[])
return lines
def animate(i):
timetext.set_text(i)
x = numpy.array(range(1,npdata.shape[0]+1))
for lnum,line in enumerate(lines):
line.set_data(x,npdata[:,plotlays[lnum]-1,i])
return lines, timetext
anim = animation.FuncAnimation(fig, animate, init_func=init,
frames=numpy.shape(npdata)[1], interval=100, blit=True)
plt.show()
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