[Matplotlib-users] matplotlib 3.0 animation blitting bug?

Thomas Caswell tcaswell at gmail.com
Fri Oct 19 20:41:44 EDT 2018


That does help to localize the bug as Qt has support for high-dpi (to
support full resolution figures we have to first ask the desktop to not
give us effectively half-resolution and then internally double the rendered
resolution) where as tk does not.  It looks like something is getting
confused about what parts of the buffer need to be updated / restored /
cleared during blitting.

Tom

On Fri, Oct 19, 2018 at 8:09 PM David J Pine <djpine at gmail.com> wrote:

> Hi Tom,
>
> Yes, it is on a retina display.  I can try it on another display when I'm
> at work tomorrow.  However, resizing the window while running the animation
> does not fix the problem.
>
> David
>
> On Fri, Oct 19, 2018 at 6:57 PM Thomas Caswell <tcaswell at gmail.com> wrote:
>
>> David,
>>
>> Is this on a retnia display?  If you re-size while the animation is
>> running does it fix it's self?
>>
>> When saving to disk we re-render each frame 'from scratch' so I am not
>> surprised that it does not show up there.
>>
>> Tom
>>
>> On Tue, Oct 16, 2018 at 10:37 AM DJP <djpine at gmail.com> wrote:
>>
>>> I should have stated that I'm using the Qt5Agg backend, which seems to be
>>> where the problem lies. The animation works without a problem for the
>>> TkAgg
>>> backend.
>>>
>>>
>>>
>>> --
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>>
>>
>> --
>> Thomas Caswell
>> tcaswell at gmail.com
>>
>

-- 
Thomas Caswell
tcaswell at gmail.com
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