python - Matplotlib Nested Events -


so working on re-making gui in python data analysis done in matlab. 1 functionality need able @ particular plot of data , select part of plot background. using matplotlib plotting, , trying use mouse , keyboard events handle functionality.

my question, then, how can "activate" event, in case using mouse select background data, using keystroke event tell program mouse input.

to map out like:

press "ctrl+b" enter background selection mode then: click once grab leftmost x data click again grab rightmost x data disable click input

any suggestions?

for reference, here bit of attempt; "ctrl+b" part works, freezes after first click.

def background(event):     print('button=%s, x=%d, y=%d, xdata=%f, ydata=%f' % (event.key, event.x, event.y, event.xdata, event.ydata))     if event.key == "ctrl+b":         print("you clicked ctrl+b")         xbounds = []         while len(xbounds) < 2:             cid = fig.canvas.mpl_connect('button_press_event', onclick)  def onclick(event):     xbounds.append(event.x)

oops, figured out myself... while statement running indefinitely , causing python crash. switching while if solved problem.


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