set_colorbar sets colorbar attribute. So I guess you can just check if
Mappable.colorbar is None or not.
Mappable.colorbar, when set, should be a tuple whose first item is an
image for colorbar and the second item is an colorbar axes.
Regards,
-JJ
On Tue, Feb 16, 2010 at 5:26 AM, Nico Schlömer <nico.schloe...@gmail.com> wrote:
> Alright, so I dug the sources a bit and found the snippet
>
> ========================== *snip* ==========================
> cb = cbar.Colorbar(cax, mappable, **kw)
>
> def on_changed(m):
> #print 'calling on changed', m.get_cmap().name
> cb.set_cmap(m.get_cmap())
> cb.set_clim(m.get_clim())
> cb.update_bruteforce(m)
>
> self.cbid = mappable.callbacksSM.connect('changed', on_changed)
> mappable.set_colorbar(cb, cax)
> ========================== *snap* ==========================
>
> I guess what happens is that a Colorbar is created, and a callback
> function registered which adapts this very color bar whenever there is
> a change in color maps/limits.
> Well. -- I reckon that means that at the moment there's no way to tell
> if a ScalarMappable has a color bar associated or not. :/ -- At least
> I don't see how it would be possible to dig up on_changed( ) from the
> list of callbacks and extract cb from it.
>
> Aaand everybody: "Fea-ture request, fea-ture request!"
> get_colorbar() for ScalarMappables :)
>
> Cheers,
> Nico
>
>
>
>
> On Mon, Feb 15, 2010 at 7:58 PM, Nico Schlömer <nico.schloe...@gmail.com>
> wrote:
>>> As far as I can see, it is the other way around, i.e., mappables
>>> (e.g., images) know about the colorbar they are connected.
>>
>> Well yeah, that'd be even better. I'll check out the API. -- Hints
>> would still be appreciated of course.
>>
>> --Nico
>>
>
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