Re: [Matplotlib-users] How to ask a Figure whether the zoom was manually changed?

[Ryan M. <rm...@gm...>]

2010/7/6 Václav Šmilauer <eu...@ar...>:
> Hello,
>
> I have a simple live-update thread (basically calls set_xdata and
> set_ydata on all lines with the new data, then calls canvas.draw() on
> all figures).
>
> 1. I would like to zoom the figure to contain the whole data range after
> each update, but ONLY in case the figure zoom was not changed manuallu
>
> One idea was to connect to resize_event and scroll_event of the canvas,
> notifying my code that the zoom was change. But in such a case, clicking
> "home" will not revert to automatic zooming.
>
> Is there some better way?

I'm not sure exactly, but you might be able to do something with the
xlim_change/ylim_changed events:

http://matplotlib.sourceforge.net/examples/event_handling/viewlims.html

> 2. Is there an event to be notified when the figure window is close by
> the user?

As Ben said, there's an close_event you can listen for. Here's an example:

http://matplotlib.sourceforge.net/examples/event_handling/close_event.html

Ryan

-- 
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma