python - Pyplot connect to timer event? -

the same way have plt.connect('button_press_event', self.on_click) have plt.connect('each_five_seconds_event', self.on_timer)

how can achieve in way that's similar i've shown above?

edit: tried

fig = plt.subplot2grid((num_cols, num_rows), (col, row), rowspan=rowspan,                            colspan=colspan) timer = fig.canvas.new_timer(interval=100, callbacks=[(self.on_click)]) timer.start() 

and got

attributeerror: 'axessubplot' object has no attribute 'canvas' 

also,

 new_timer(interval=100, callbacks=[(self.on_click)]) 

good, or have pass more stuff in there, in example?

matplotlib has backend-agnostic timer integrates gui's event loop. have @ figure.canvas.new_timer(...).

the call signature touch akward, works. (you need explicitly specify empty sequences , dicts if call function(s) don't take arguments or kwargs.)

as minimal example:

import matplotlib.pyplot plt  def on_timer():     print 'hi!'  fig, ax = plt.subplots()  # interval in milliseconds.   # "callbacks" expects sequence of (func, args, kwargs) timer = fig.canvas.new_timer(interval=5000, callbacks=[(on_timer, [], {})]) timer.start()  plt.show() 

and "fancier" example animates 2d brownian walk:

import numpy np import matplotlib.pyplot plt  def on_timer(line, x, y):     x.append(x[-1] + np.random.normal(0, 1))     y.append(y[-1] + np.random.normal(0, 1))     line.set_data(x, y)     line.axes.relim()     line.axes.autoscale_view()     line.axes.figure.canvas.draw()  x, y = [np.random.normal(0, 1)], [np.random.normal(0, 1)] fig, ax = plt.subplots() line, = ax.plot(x, y, color='aqua', marker='o')  timer = fig.canvas.new_timer(interval=100,                               callbacks=[(on_timer, [line, x, y], {})]) timer.start()  plt.show()