matlab绘图图形之间暂停,使用Tkinter和pylab/matplotlib嵌入来播放、暂停、停止cabability的彩色绘图动画：无法更新图形/画布？...

我已经看了&＃xff0c;但没有发现以前的问题足够具体&＃xff0c;所以很抱歉&＃xff0c;如果这是重复的。

目标&＃xff1a;GUI用pylab的pcolor绘制的不同矩阵数据不断更新图形&＃xff0c;这样就有了运行动画。但是用户应该能够通过Tkinter小部件按钮播放、暂停、停止动画。

在我使用set_array()、draw()和canvas.manager.after()得到matplotlib的答案之前&＃xff0c;我已经有了可以启动动画的工作代码&＃xff0c;但是在使用matplotlib功能时&＃xff0c;我不知道如何停止或暂停它&＃xff0c;所以我决定使用Tkinter straigt up&＃xff0c;而不是matplotlib的Tcl/Tk包装器。这里是工作代码只是为了好玩&＃xff0c;但万一有人有任何想法。但继续问真正的问题。# mouse click the "Play" button widget to play animation

# PROBLEMS:

# 1. can&＃39;t pause or stop animation. once loop starts it cant be broken

# 2. set_array attribute for pcolor PolyCollection object only updates the matrix

# C of pcolor, however for my actual application, I will be using pcolor(x,y,C)

# and will have new x,y, and C per plot. Unlike line object, where set_xdata and

# set_ydata are used, I can&＃39;t find an analogy to pcolor. If I were updating an

# image I could use set_data(x,y,C), but i am not importing an image. I assume

# pcolor is still my best bet unless (as in Matlab) there is an equivalent

# image(x,y,C) function?

import time as t

from pylab import *

from matplotlib.widgets import Button

ion()

def pressPlay(event):

#fig&＃61;figure()

ax &＃61; subplot(111)

subplots_adjust(bottom&＃61;0.2)

c&＃61;rand(5,5)

cplot&＃61;pcolor(c)

draw()

for i in range(5):

c&＃61;rand(5,5)

cplot.set_array(c.ravel())

cplot.autoscale()

title(&＃39;Ionosphere &＃39;&＃43;str(i&＃43;1))

t.sleep(3)

draw()

axPlay &＃61; axes([0.7, 0.05, 0.1, 0.075])

bPlay &＃61; Button(axPlay, &＃39;Play&＃39;)

bPlay.on_clicked(pressPlay)

顺便说一下&＃xff1a;在导入pylab时&＃xff0c;TkAgg后端会自动设置为在matplotlib中使用。。。我想。或者我自动使用TkAgg。我正在运行Linux&＃xff0c;Python2.6.4&＃xff0c;iPython0.10。

我操纵了从Daniweb IT讨论社区找到的代码&＃xff0c;以便使用Tkinter和update_idletasks()函数可以播放、编辑、停止改变标签小部件的颜色。只要安装了Tkinter&＃xff0c;就可以在python上单独运行。没有使用matplotlib或pylab。这是工作代码&＃xff0c;也是我最后一个问题的核心。# This is meant to draw Start and Stop buttons and a label

# The Start button should start a loop in which the label

# is configured to change color by looping through a color list.

# At each pass through the loop the variable self.stop is checked:

# if True the loop terminates.

# The Stop button terminates the loop by setting the

# variable self.stop to True.

# The Start button restarts the animation from the beginning

# if Stop was hit last, or restarts the animation from where it left off

# if pause was hit last.

# The loop also terminates on the last color of the list, as if stop were hit

from Tkinter import *

colors &＃61; [&＃39;red&＃39;,&＃39;green&＃39;,&＃39;blue&＃39;,&＃39;orange&＃39;,&＃39;brown&＃39;,&＃39;black&＃39;,&＃39;white&＃39;,&＃39;purple&＃39;,&＃39;violet&＃39;]

numcol&＃61;len(colors)

class SGWidget(Frame):

def __init__(self, parent&＃61;None):

Frame.__init__(self, parent)

self.top_frame &＃61; Frame(bg&＃61;&＃39;green&＃39;)

self.top_frame.grid()

# enter event loop until all idle callbacks have been called.

self.top_frame.update_idletasks()

self.makeToolbar()

# construct a label widget with the parent frame top_frame

self.label &＃61; Label(self.top_frame,text &＃61; &＃39;Text&＃39;,bg&＃61;&＃39;orange&＃39;)

self.label.grid()

# initialize (time index t)

self.t&＃61;0

def makeToolbar(self):

self.toolbar_text &＃61; [&＃39;Play&＃39;,&＃39;Pause&＃39;,&＃39;Stop&＃39;]

self.toolbar_length &＃61; len(self.toolbar_text)

self.toolbar_buttons &＃61; [None] * self.toolbar_length

for toolbar_index in range(self.toolbar_length):

text &＃61; self.toolbar_text[toolbar_index]

bg &＃61; &＃39;yellow&＃39;

button_id &＃61; Button(self.top_frame,text&＃61;text,background&＃61;bg)

button_id.grid(row&＃61;0, column&＃61;toolbar_index)

self.toolbar_buttons[toolbar_index] &＃61; button_id

def toolbar_button_handler(event, self&＃61;self, button&＃61;toolbar_index):

return self.service_toolbar(button)

# bind mouse click on start or stop to the toolbar_button_handler

button_id.bind("", toolbar_button_handler)

# call blink() if start and set stop when stop

def service_toolbar(self, toolbar_index):

if toolbar_index &＃61;&＃61; 0:

self.stop &＃61; False

print self.stop

self.blink()

elif toolbar_index &＃61;&＃61; 1:

self.stop &＃61; True

print self.stop

elif toolbar_index &＃61;&＃61; 2:

self.stop &＃61; True

print self.stop

self.t&＃61;0

# while in start, check if stop is clicked, if not, call blink recursivly

def blink(self):

if not self.stop:

print &＃39;looping&＃39;,self.stop

self.label.configure(bg&＃61;colors[self.t])

self.t &＃43;&＃61; 1

if self.t &＃61;&＃61; numcol: # push stop button

self.service_toolbar(2)

self.label.update_idletasks()

self.after(500, self.blink)

if __name__ &＃61;&＃61; &＃39;__main__&＃39;:

SGWidget().mainloop()

然后&＃xff0c;在matplotlib示例embedding_in_tk.html&＃xff0c;http://matplotlib.sourceforge.net/examples/user_interfaces/embedding_in_tk.html的帮助下&＃xff0c;我操纵前面的代码来制作连接到pcolor图形的画布的动画。但是&＃xff0c;使用canvas.get_tk_widget()更新画布并没有完成我假设的技巧&＃xff0c;因为在它重新绘制pcolor()之前有一个命令。所以我想我每次重新绘制时都得把画布和图形重新连接起来&＃xff1f;但我不知道怎么做。我希望使用update_idletasks()&＃xff1f;&＃xff1f;&＃xff1f;我甚至在正确的轨道上&＃xff1f;&＃xff1f;&＃xff1f;

所以&＃xff0c;在下面的代码中&＃xff0c;当代码循环播放时&＃xff0c;我看到的只是同一个图&＃xff0c;而不是一个更新的图&＃xff1f;这是我的主要问题。from pylab import *

from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg

from Tkinter import *

colors&＃61;[None]*10

for i in range(len(colors)):

colors[i]&＃61;rand(5,5)

#colors &＃61; [&＃39;red&＃39;,&＃39;green&＃39;,&＃39;blue&＃39;,&＃39;orange&＃39;,&＃39;brown&＃39;,&＃39;black&＃39;,&＃39;white&＃39;,&＃39;purple&＃39;,&＃39;violet&＃39;]

numcol&＃61;len(colors)

class App(Frame):

def __init__(self,parent&＃61;None):

Frame.__init__(self,parent)

self.top&＃61;Frame()

self.top.grid()

self.top.update_idletasks()

self.makeWidgets()

self.makeToolbar()

def makeWidgets(self):

# figsize (w,h tuple in inches) dpi (dots per inch)

#f &＃61; Figure(figsize&＃61;(5,4), dpi&＃61;100)

self.f &＃61; Figure()

self.a &＃61; self.f.add_subplot(111)

self.a.pcolor(rand(5,5))

# a tk.DrawingArea

self.canvas &＃61; FigureCanvasTkAgg(self.f, master&＃61;self.top)

self.canvas.get_tk_widget().grid(row&＃61;3,column&＃61;0,columnspan&＃61;3)

self.bClose &＃61; Button(self.top, text&＃61;&＃39;Close&＃39;,command&＃61;self.top.destroy)

self.bClose.grid()

#self.label &＃61; Label(self.top, text &＃61; &＃39;Text&＃39;,bg&＃61;&＃39;orange&＃39;)

#self.label.grid()

# initialize (time index t)

self.t&＃61;0

def makeToolbar(self):

self.toolbar_text &＃61; [&＃39;Play&＃39;,&＃39;Pause&＃39;,&＃39;Stop&＃39;]

self.toolbar_length &＃61; len(self.toolbar_text)

self.toolbar_buttons &＃61; [None] * self.toolbar_length

for toolbar_index in range(self.toolbar_length):

text &＃61; self.toolbar_text[toolbar_index]

bg &＃61; &＃39;yellow&＃39;

button_id &＃61; Button(self.top,text&＃61;text,background&＃61;bg)

button_id.grid(row&＃61;0, column&＃61;toolbar_index)

self.toolbar_buttons[toolbar_index] &＃61; button_id

def toolbar_button_handler(event, self&＃61;self, button&＃61;toolbar_index):

return self.service_toolbar(button)

button_id.bind("", toolbar_button_handler)

# call blink() if start and set stop when stop

def service_toolbar(self, toolbar_index):

if toolbar_index &＃61;&＃61; 0:

self.stop &＃61; False

print self.stop

self.blink()

elif toolbar_index &＃61;&＃61; 1:

self.stop &＃61; True

print self.stop

elif toolbar_index &＃61;&＃61; 2:

self.stop &＃61; True

print self.stop

self.t&＃61;0

# while in start, check if stop is clicked, if not, call blink recursivly

def blink(self):

if not self.stop:

print &＃39;looping&＃39;,self.stop

self.a.pcolor(colors[self.t])

#draw()

#self.label.configure(bg&＃61;colors[self.t])

self.t &＃43;&＃61; 1

if self.t &＃61;&＃61; numcol: # push stop button

self.service_toolbar(2)

self.canvas.get_tk_widget().update_idletasks()

#self.label.update_idletasks()

self.after(500, self.blink)

#root &＃61; Tk()

app&＃61;App()

app.mainloop()

谢谢你的帮助&＃xff01;