[Matplotlib-users] Memory usage when plotting sequental figures

[zetah <ot...@hu...>]

Hi,

if I use something like this:

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

def draw_fig(arr, fn):
    fig = plt.figure()
    ax = fig.add_subplot(111)
    ax.contourf(arr)
    plt.savefig(fn)

if __name__ == '__main__':
	for i in range(10):
		draw_fig(np.random.random((10, 10)), 'fig_%02d.png' % i)
==================================================

memory usage grows with every loop, so I can't plot this way many sequences.

I know there is animation class in Matplotlib, but this way is easier to me, and I think I miss something fundamental because this is happening. How can I avoid memory leak using this approach?

Thanks