[IPython-dev] IPython notebook widgets for interactive matplotlib figures

Antonino Ingargiola tritemio at gmail.com
Tue Jul 29 17:11:06 EDT 2014

On Tue, Jul 29, 2014 at 1:41 PM, Fernando Perez <fperez.net at gmail.com>

> On Tue, Jul 29, 2014 at 1:06 PM, Antonino Ingargiola <tritemio at gmail.com>
> wrote:
>> Just my 2c: why don't providing an API function like
>> "show_figure(False)". At this moment it will just call close(). In the
>> future if you change implementation the API function will stay the same.
> Not a bad idea... I'd like to mull a little bit on the cleanest way to do
> this, but that's not a bad solution.
> If nothing else, you can add that to your local utils for now, and see if
> it works well enough.
> def showfig(f):
>   plt.close(f)
>   display(f)
> is easy enough to add at the top :)

Yep, I'm doing also a step further. Since the problem was adding
interactivity to inline matplotlib plots, I wrapped the necessary bits in a
function like this:

def add_cursor(fig, ax):

    vline = ax.axvline(1, color='k')
    hline = ax.axhline(1, color='k')

    def set_cursor(x, y):
        vline.set_xdata((x, x))
        hline.set_ydata((y, y))

    interact(set_cursor, x=ax.get_xlim(), y=ax.get_ylim())

and then simply add a call to add_cursor whenever is needed. In this case
display() is called by interact(). I will probably write a couple of
similar functions for various "interactivity needs".

Thanks again,
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