I need to create lots of figures, then use savefig to save the figure.
But after about 280 pictures, it throws the exception RuntimeError: Could not allocate memory for image
Is there some function like clear() in Matplotlib ?
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Reassign any variables referring to your pictures and Python should clear the memory for you.grc– grc2014-11-17 06:57:47 +00:00Commented Nov 17, 2014 at 6:57
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1Are you using a single figure object or creating many figures?Thibaut– Thibaut2014-11-17 06:59:25 +00:00Commented Nov 17, 2014 at 6:59
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1possible duplicate of Matplotlib runs out of memory when plotting in a loopsebix– sebix2014-11-17 19:12:43 +00:00Commented Nov 17, 2014 at 19:12
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2 Answers
Yes, you can use:
clf(): in order to clean the current figureclose(): in order to close the current window
1 Comment
pippo1980
dont forget stackoverflow.com/questions/20401057/… : see were it says : Remember that plt.show() is a blocking function, so in the example code you used above, plt.close() isn't being executed until the window is closed, which makes it redundant. You can use plt.ion() at the beginning of your code to make it non-blocking, although this has other implications.
You can try:
i=1
while i<=280:
plt.figure(i).clear()
i+=1
But you have to numbered your figures:
import matplotlib.pyplot as plt
from numpy import *
# example of data:
x = linspace(0,4,1e3)
data = sin(10*x)
plt.figure(1)
plt.plot(x, data)
plt.show()
