matplotlib-users

[Matplotlib-users] Animate scatter plots

[Eric J. <jo...@MI...>]

I've looked through the latest examples as well as google and the list
archives, and am still at a loss -- can anyone point me to an example of
how to animate a scatter plot? The collection returned by scatter()
lacks anything akin to a set_data method. 

Thanks!
		...Eric

Re: [Matplotlib-users] Animate scatter plots

[Eric B. <eri...@gm...>]

Hi Eric,
>
> On Fri, Nov 21, 2008 at 11:19 AM, Eric Jonas <jo...@mi...> wrote:
>> I've looked through the latest examples as well as google and the list
>> archives, and am still at a loss -- can anyone point me to an example of
>> how to animate a scatter plot?

I've attached a somewhat unpolished but functional example that shows
time-synchronized animation of multiple scatter plots. It uses the wx
backend explicitly, due to some issues with the idle event handling.

>> The collection returned by scatter() lacks anything akin to a set_data method.

Yup, you want this instead:
collection.set_offsets(xy)
collection.set_array(s)

-Eric

Re: [Matplotlib-users] Animate scatter plots

[Cohen-Tanugi J. <co...@lp...>]

> hi, I tried your script, commenting/uncommenting the backend line, but 
> I still get:
> [cohen@jarrett ~]$ ipython -pylab MACROS/animation.py
> --------------------------------------------------------------------------- 
>
> AttributeError                            Traceback (most recent call 
> last)
>
> /home/cohen/MACROS/animation.py in <module>()
>    274             p.show()
>    275
> --> 276     t = test()
>    277
>    278
>
> /home/cohen/MACROS/animation.py in __init__(self)
>    270
>    271             # cid = p.gcf().canvas.mpl_connect('idle_event', 
> self.update)
> --> 272             wx.GetApp().Bind(wx.EVT_IDLE, self.update)
>    273
>    274             p.show()
>
> AttributeError: 'NoneType' object has no attribute 'Bind'
> WARNING: Failure executing file: <MACROS/animation.py>
>
> I am using MPL revision 6440.
> cheers,
> Johann
>
> Eric Bruning wrote:
>> Hi Eric,
>>  
>>> On Fri, Nov 21, 2008 at 11:19 AM, Eric Jonas <jo...@mi...> wrote:
>>>    
>>>> I've looked through the latest examples as well as google and the list
>>>> archives, and am still at a loss -- can anyone point me to an 
>>>> example of
>>>> how to animate a scatter plot?
>>>>       
>>
>> I've attached a somewhat unpolished but functional example that shows
>> time-synchronized animation of multiple scatter plots. It uses the wx
>> backend explicitly, due to some issues with the idle event handling.
>>
>>  
>>>> The collection returned by scatter() lacks anything akin to a 
>>>> set_data method.
>>>>       
>>
>> Yup, you want this instead:
>> collection.set_offsets(xy)
>> collection.set_array(s)
>>
>> -Eric
>>   
>> ------------------------------------------------------------------------
>>
>> ------------------------------------------------------------------------- 
>>
>> This SF.Net email is sponsored by the Moblin Your Move Developer's 
>> challenge
>> Build the coolest Linux based applications with Moblin SDK & win 
>> great prizes
>> Grand prize is a trip for two to an Open Source event anywhere in the 
>> world
>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>

Re: [Matplotlib-users] Animate scatter plots

[Eric B. <eri...@gm...>]

Strange, strange. iPython is apparently having some effect here: I tried
ipython -pylab animation.py
and I got a figure with the initial plot, but nothing further
happened. After closing the plot, I typed
run animation.py
at the ipython prompt, and saw the initial plot, erasure, and
animation that I expected. Can you try running with a plain
python animation.py

I've attached a new version of the script with some changes suggested
offline by Ryan May - he was seeing platform or wx-specific behavior
related to event handling. All bugs remaining are mine :)

-Eric

On Sun, Nov 23, 2008 at 6:20 PM, Cohen-Tanugi Johann
<co...@lp...> wrote:
>
>> hi, I tried your script, commenting/uncommenting the backend line, but I
>> still get:
>> [cohen@jarrett ~]$ ipython -pylab MACROS/animation.py
>>
>> ---------------------------------------------------------------------------
>> AttributeError                            Traceback (most recent call
>> last)
>>
>> /home/cohen/MACROS/animation.py in <module>()
>>   274             p.show()
>>   275
>> --> 276     t = test()
>>   277
>>   278
>>
>> /home/cohen/MACROS/animation.py in __init__(self)
>>   270
>>   271             # cid = p.gcf().canvas.mpl_connect('idle_event',
>> self.update)
>> --> 272             wx.GetApp().Bind(wx.EVT_IDLE, self.update)
>>   273
>>   274             p.show()
>>
>> AttributeError: 'NoneType' object has no attribute 'Bind'
>> WARNING: Failure executing file: <MACROS/animation.py>
>>
>> I am using MPL revision 6440.
>> cheers,
>> Johann
>>
>> Eric Bruning wrote:
>>>
>>> Hi Eric,
>>>
>>>>
>>>> On Fri, Nov 21, 2008 at 11:19 AM, Eric Jonas <jo...@mi...> wrote:
>>>>
>>>>>
>>>>> I've looked through the latest examples as well as google and the list
>>>>> archives, and am still at a loss -- can anyone point me to an example
>>>>> of
>>>>> how to animate a scatter plot?
>>>>>
>>>
>>> I've attached a somewhat unpolished but functional example that shows
>>> time-synchronized animation of multiple scatter plots. It uses the wx
>>> backend explicitly, due to some issues with the idle event handling.
>>>
>>>
>>>>>
>>>>> The collection returned by scatter() lacks anything akin to a set_data
>>>>> method.
>>>>>
>>>
>>> Yup, you want this instead:
>>> collection.set_offsets(xy)
>>> collection.set_array(s)
>>>
>>> -Eric
>>>  ------------------------------------------------------------------------
>>>
>>> -------------------------------------------------------------------------
>>> This SF.Net email is sponsored by the Moblin Your Move Developer's
>>> challenge
>>> Build the coolest Linux based applications with Moblin SDK & win great
>>> prizes
>>> Grand prize is a trip for two to an Open Source event anywhere in the
>>> world
>>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>>> ------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> Matplotlib-users mailing list
>>> Mat...@li...
>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>

Re: [Matplotlib-users] Animate scatter plots

[Cohen-Tanugi J. <Joh...@lp...>]

indeed it works with python now, provided I uncomment the wxAgg setting 
in the script.
best,
Johann

Eric Bruning wrote:
> Strange, strange. iPython is apparently having some effect here: I tried
> ipython -pylab animation.py
> and I got a figure with the initial plot, but nothing further
> happened. After closing the plot, I typed
> run animation.py
> at the ipython prompt, and saw the initial plot, erasure, and
> animation that I expected. Can you try running with a plain
> python animation.py
>
> I've attached a new version of the script with some changes suggested
> offline by Ryan May - he was seeing platform or wx-specific behavior
> related to event handling. All bugs remaining are mine :)
>
> -Eric
>
> On Sun, Nov 23, 2008 at 6:20 PM, Cohen-Tanugi Johann
> <co...@lp...> wrote:
>   
>>> hi, I tried your script, commenting/uncommenting the backend line, but I
>>> still get:
>>> [cohen@jarrett ~]$ ipython -pylab MACROS/animation.py
>>>
>>> ---------------------------------------------------------------------------
>>> AttributeError                            Traceback (most recent call
>>> last)
>>>
>>> /home/cohen/MACROS/animation.py in <module>()
>>>   274             p.show()
>>>   275
>>> --> 276     t = test()
>>>   277
>>>   278
>>>
>>> /home/cohen/MACROS/animation.py in __init__(self)
>>>   270
>>>   271             # cid = p.gcf().canvas.mpl_connect('idle_event',
>>> self.update)
>>> --> 272             wx.GetApp().Bind(wx.EVT_IDLE, self.update)
>>>   273
>>>   274             p.show()
>>>
>>> AttributeError: 'NoneType' object has no attribute 'Bind'
>>> WARNING: Failure executing file: <MACROS/animation.py>
>>>
>>> I am using MPL revision 6440.
>>> cheers,
>>> Johann
>>>
>>> Eric Bruning wrote:
>>>       
>>>> Hi Eric,
>>>>
>>>>         
>>>>> On Fri, Nov 21, 2008 at 11:19 AM, Eric Jonas <jo...@mi...> wrote:
>>>>>
>>>>>           
>>>>>> I've looked through the latest examples as well as google and the list
>>>>>> archives, and am still at a loss -- can anyone point me to an example
>>>>>> of
>>>>>> how to animate a scatter plot?
>>>>>>
>>>>>>             
>>>> I've attached a somewhat unpolished but functional example that shows
>>>> time-synchronized animation of multiple scatter plots. It uses the wx
>>>> backend explicitly, due to some issues with the idle event handling.
>>>>
>>>>
>>>>         
>>>>>> The collection returned by scatter() lacks anything akin to a set_data
>>>>>> method.
>>>>>>
>>>>>>             
>>>> Yup, you want this instead:
>>>> collection.set_offsets(xy)
>>>> collection.set_array(s)
>>>>
>>>> -Eric
>>>>  ------------------------------------------------------------------------
>>>>
>>>> -------------------------------------------------------------------------
>>>> This SF.Net email is sponsored by the Moblin Your Move Developer's
>>>> challenge
>>>> Build the coolest Linux based applications with Moblin SDK & win great
>>>> prizes
>>>> Grand prize is a trip for two to an Open Source event anywhere in the
>>>> world
>>>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>>>> ------------------------------------------------------------------------
>>>>
>>>> _______________________________________________
>>>> Matplotlib-users mailing list
>>>> Mat...@li...
>>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>>>