50 lines
1.4 KiB
Python
50 lines
1.4 KiB
Python
# -*- coding: utf-8 -*-
|
|
"""
|
|
Created on Sun Sep 14 12:41:24 2014
|
|
|
|
@author: rlabbe
|
|
"""
|
|
|
|
from matplotlib import animation
|
|
import matplotlib.pyplot as plt
|
|
|
|
def animate(filename, func, frames, interval, fig=None, figsize=(6.5, 6.5)):
|
|
""" Creates an animated GIF of a matplotlib.
|
|
|
|
Parameters
|
|
----------
|
|
filename : string
|
|
name of the file. E.g 'foo.GIF' or '\home\monty\parrots\fjords.gif'
|
|
|
|
func : function
|
|
function that will be called once per frame. Must have signature of
|
|
def fun_name(frame_num)
|
|
|
|
frames : int
|
|
number of frames to animate. The current frame number will be passed
|
|
into func at each call.
|
|
|
|
interval : float
|
|
Milliseconds to pause on each frame in the animation. E.g. 500 for half
|
|
a second.
|
|
|
|
figsize : (float, float) optional
|
|
size of the figure in inches. Defaults to 6.5" by 6.5"
|
|
"""
|
|
|
|
|
|
|
|
def forward(frame):
|
|
# I don't know if it is a bug or what, but FuncAnimation calls twice
|
|
# with the first frame number. That breaks any animation that uses
|
|
# the frame number in computations
|
|
if forward.first:
|
|
forward.first = False
|
|
return
|
|
func(frame)
|
|
|
|
if fig is None:
|
|
fig = plt.figure(figsize=figsize)
|
|
forward.first = True
|
|
anim = animation.FuncAnimation(fig, forward, frames=frames, interval=interval)
|
|
anim.save(filename, writer='imagemagick') |