Contourf animation

Question

I am using a for loop to calculate values at every node of 20x20 matrix and storing data in

MM = []

I want to animate the results and my code looks like this:

ax = plt.subplot(111) 
for i in range(60): 
    x = MM[i]  
    ax.contourf(X,Y,x, cmap = cm.hot) 
    plt.draw()                            

plt.show()

The problem is that it shows only MM[-1]. I have looked over the examples given here, but can't figure out how to make it work. Thank you.

related: http://stackoverflow.com/q/16915966/1461210, http://stackoverflow.com/q/23070305/1461210 — ali_m, Apr 27 '15 at 18:19

score 0 · Answer 1 · answered Apr 27 '15 at 18:16

0

Your problem is likely due how you are running Matplotlib and what graphical backend you are using. The following example works in IPython. Note that I call ion() to set the interactive mode to on.

from matplotlib import pyplot as plt
import numpy as np

x = y = np.arange(-3.0, 3.01, 0.025)
X, Y = np.meshgrid(x, y)

plt.ion()
ax = plt.subplot(111) 
for i in range(1,20): 
    Z1 = plt.mlab.bivariate_normal(X, Y, 0.5+i*0.1, 0.5, 1, 1)
    ax.contourf(x,y,Z1, cmap = plt.cm.hot) 
    plt.draw()    

plt.show()

The information here should help you get your animation running.

answered Apr 27 '15 at 18:16

Molly

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still the same, although it opens a plotting screen and it loads itself for a bit, and then shows the last data. – cvut Apr 27 '15 at 20:36
Is it possible to do it with FuncAnimation? – cvut Apr 27 '15 at 23:47

Contourf animation

1 Answers1