Re: [Matplotlib-users] pick event for images

[Joe K. <jof...@gm...>]

Hi Nils,


I'm glad you found it useful!

I'm certainly not opposed to seeing it integrated into matplotlib in the
long run.  At the moment, though, it's probably changing a bit too
quickly.  There's a lot of little things I'd like to add to it.

On the other hand, if it ever were integrated upstream, there's an
opportunity to clean things up quite a bit, as mpldatacursor currently has
quite a few workarounds for minor bugs in old versions of mpl and minor api
changes, etc.

Cheers!
-Joe


On Thu, Oct 31, 2013 at 8:00 AM, Nils Wagner <ni...@go...> wrote:

> Hi Joe,
>
> Just now I installed your package mpldatacursor and run the example
> image_example.py.
> Awesome !
> Is there a chance to integrate it into matplotlib ?
>
> Nils
>
>
>
> On Wed, Oct 30, 2013 at 5:58 PM, Joe Kington <jof...@gm...>wrote:
>
>>
>> On Oct 30, 2013 9:43 AM, "Nils Wagner" <ni...@go...> wrote:
>> >
>> > Hi all,
>> >
>> > How can I retrieve the corresponding "color value" in percent, when I
>> click on the image ?
>> >
>>
>> You have to jump through a couple of hoops.
>>
>> Have a look at the _coords2index function in pick_info.py for
>> mpldatacursor.
>> https://github.com/joferkington/mpldatacursor/blob/master/mpldatacursor/pick_info.py
>>
>> Also, mpldatacursor might be useful for what you're doing. Not to plug my
>> own project too much, but it does exactly this, among other things.
>>
>> Hope that helps!
>> -Joe
>>
>> > fig = plt.figure()
>> > ax  = fig.add_subplot(111)
>> > cax = ax.imshow(col[:,::2],
>> interpolation='nearest',extent=[0.5,20.5,0.5,2
>> > 0.5],alpha=1,picker=5)
>> >
>> > fig.canvas.mpl_connect('pick_event', onpick)
>> >
>> > def onpick(event):
>> >  ...
>> >
>> >
>> > Nils
>> >
>> >
>> >
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>