Embedding an animated matplotlib in tk

Question

I am fairly new to python and a real beginner to tkinter and matplotlib. I have the following code which essentially is a testbed for what I eventually want to do.

#!/usr/bin/env python 
import  numpy as np
from  matplotlib import  pyplot as plt
import time

top = 100
plt.ion () # set plot to animated
xdata = []
c = 0
for a in range(0,top):
 xdata.append(a)
 c+=1
ydata =  [ 0 ] *  top * 10
ax1 = plt.axes ()  
c = 0
myfile = open("rdata.txt", "r")
for myline in myfile:
q = myline
ydata[c] = q 
c+=1
c = 0
# Make plot
line, =  plt.plot (ydata[0:60])

myfile = open("rdata.txt", "r")

for p in range(0, top * 10):
for myline in myfile:
      q = int(myline)
      ydata.append (q)
      del  ydata [ 0 ]
      line.set_xdata (np.arange ( len (ydata)))
      line.set_ydata (ydata)   # update the data
      time.sleep(0.01)
      plt.draw () # update the plot 

#   c +=1


file.close(myfile)

How can I embed this in tkinter. I have searched for hours and have come across many suggestions but it seems none of them apply to dynamic plots. If anyone wants to see the data this program is using I created it with the following code.

#!/usr/bin/env python
import random

myfile = open("rdata.txt", "w")
myfile.write("100\n")
myfile.write("0\n")
for x in range(2,100):
 q = random.randint(10,90)
 myfile.write(str(q))
 myfile.write("\n")

file.close(myfile)

Of course it may just be that I am just not understanding this correctly

HYRY HYRY · Accepted Answer · 2014-01-17T12:27:57

Here is an example, I added a button that will start animation:

import numpy as np
import matplotlib

matplotlib.use("TKAgg")
import pylab as pl
fig, ax = pl.subplots()
p = 0
x = np.linspace(0, 10, 200)
y = np.sin(x+p)
line, = ax.plot(x, y)
canvas = fig.canvas.get_tk_widget()

from Tkinter import Button

def anim():
    global p
    p += 0.04
    y = np.sin(x+p)
    line.set_data(x, y)
    fig.canvas.draw()
    canvas.after(50, anim)

def go():
    anim()

b = Button(canvas.master, text="go", command=go)
b.pack()
pl.show()

Embedding an animated matplotlib in tk

1 Answers