Re: [Matplotlib-users] Picking on a scatter plot. Copy of positions needed?

[V. A. S. <so...@es...>]

On 14/11/2014 15:49, Benjamin Root wrote:
> It is possible. Those examples were merely showing different ways to 
> do similar things (and there are more ways to do it, btw). The 
> techniques can be used for different artist types. I guess the 
> important question is, do you need the *exact* coordinates of the 
> artist, or just the coordinates where the mouse clicked? If it is just 
> the location of the mouse click, then the "xdata" and "ydata" 
> attributes should be all you need.
>
> For picking events, the event object will have an "artist" attribute 
> that will point to the artist that was "picked". For collection type 
> artists, there should be an "ind" attribute to the event object that 
> provides the index into the array held by the collection artist. You 
> can then index the data contained by the collection object already. 
> Different collection objects, unfortunately, have slightly different 
> getters. So, while some might have get_xdata() and get_ydata(), others 
> might have get_points() or something like that. I never get them 
> straight in my head.
>

yes, I know the exact coordinates of the marker. For lines is not a 
problem (using ind) but for a collection I have not found a built-in 
way. I have made a print(dir(artist)) and the only thing I found 
interesting was get_array(), but it gave me back None ...

Armando