paulnakroshis Mar 21st, 2012 997 Never
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- This short code snippet utilizes the new animation package in matplotlib 1.1.0
- It's the shortest snippet that I know of that can produce an animate plot in
- python. I'm hoping that the animation package can be improved so that one could
- more simply animate things. What do you think?
- import numpy as np
- import matplotlib.pyplot as plt
- import matplotlib.animation as animation
- def simData():
- # this function is called as the argument for
- # the simPoints function. This function contains
- # (or defines) and iterator---a device that computes
- # a value, passes it back to the main program, and then
- # returns to exactly where it left off in the function.
- # I believe that one has to use this method to animate a plot
- # using the matplotlib animation package.
- t_max = 10.0
- dt = 0.05
- x = 0.0
- t = 0.0
- while t < t_max:
- x = np.sin(np.pi*t)
- t = t + dt
- yield x, t
- def simPoints(simData):
- x, t = simData, simData
- line.set_data(t, x)
- return line, time_text
- ## set up figure for plotting:
- fig = plt.figure()
- ax = fig.add_subplot(111)
- line, = ax.plot(, , 'bo', ms=10) # I'm still not clear on this stucture...
- ax.set_ylim(-1, 1)
- ax.set_xlim(0, 10)
- time_template = 'Time = %.1f s' # prints running simulation time
- time_text = ax.text(0.05, 0.9, '', transform=ax.transAxes)
- ## Now call the animation package:
- ani = animation.FuncAnimation(fig, simPoints, simData, blit=False, interval=10,
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