Re: [Matplotlib-users] An interactive plot challenge

On Mon, Jan 2, 2012 at 6:01 AM, Virgil Stokes <vs...@it...> wrote:

> The following link should link you to a very interesting graphical display,
>
>
> http://www.ecb.int/stats/exchange/eurofxref/html/eurofxref-graph-nok.en.html
>
> This type of graphical output (or at least something quite similar) can be
> found
> in other web pages that display financial data.
>
> Has anyone been able to produce a similar interactive graphical display
> using
> Matplotlib? A challenge for 2012 :-)
>
> --V
>

This shouldn't be too difficult. If you take a look at the event handling
examples<http://matplotlib.sourceforge.net/examples/event_handling/index.html>there
are some good starting points. For example, the data
browser example<http://matplotlib.sourceforge.net/examples/event_handling/data_browser.html>does
something similar, except you click to select data (you can change
this by hooking into 'motion_notify_event' instead of 'pick_event').

The one difficult part might be displaying your data-point info. Its easy
enough to just print out description to a terminal, but I'm not sure how
easy it is to display a tooltip. This SO
question<http://stackoverflow.com/questions/7908636/possible-to-make-labels-appear-when-hovering-over-a-point-in-matplotlib>may
help with that.

Best,
-Tony