Matplotlib: Animate 2D Array

Question

I have some trouble to animate a 2D Array:

import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation
arr=[]
for i in range(100):
    c=np.random.rand(10,10)        
    arr.append(c)
plt.imshow(arr[45])

I don't get it how to animate this array like this: https://matplotlib.org/examples/animation/dynamic_image.html

Thanks have a nice weekend.

The answer is in the example you posted - you need to use `FuncAnimation` provided with a callback function to update the plot you made. — jadelord, May 18 '18 at 15:12
You need to define a figure (fig in the example), so `FuncAnimation()` knows, what to update. Then you need an update function that tells `matplotlib`, what to do with the figure. Is it a jump to the left and then a step to the right? We don't know, but the script should. — Mr. T, May 18 '18 at 15:37

score 2 · Accepted Answer · edited Jul 11 '19 at 14:16

Oh thanks, it was easyer then I expected.

import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation

fig = plt.figure()
i=0
im = plt.imshow(arr[0], animated=True)
def updatefig(*args):
    global i
    if (i<99):
        i += 1
    else:
        i=0
    im.set_array(arr[i])
    return im,
ani = animation.FuncAnimation(fig, updatefig,  blit=True)
plt.show()

Matplotlib: Animate 2D Array

1 Answers1

Linked