2012/1/23 Gousios George <gg...@windowslive.com>
> **
> Στις 21/01/2012 07:43 μμ, ο/η Gousios George έγραψε:
>
> Στις 21/01/2012 07:05 μμ, ο/η Tony Yu έγραψε:
>
>
>
> On Sat, Jan 21, 2012 at 11:31 AM, Gousios George <gg...@windowslive.com>wrote:
>
>> Στις 21/01/2012 04:54 μμ, ο/η Tony Yu έγραψε:
>>
>>
>>
>> On Sat, Jan 21, 2012 at 9:07 AM, Gousios George <gg...@windowslive.com>wrote:
>>
>>> Hello , i have the following code in matlab and trying to do it in
>>> matplotlib.
>>>
>>> I have this code in matlab (in a function showGraphs):
>>> ...
>>> m = size(myList, 3);
>>> for k = 1:m
>>> g = myList(:, :, k);
>>> image(g + 1)
>>> axis off
>>> axis square
>>> M(k) = getframe;
>>> end;
>>>
>>> and in another file (another function):
>>> ...
>>> M = showGraphs(grids)
>>> movie(M, 1)
>>>
>>>
>>>
>>> I did so far:
>>>
>>> def showGraphs(data):
>>> data=sc.array([data])
>>> n=sc.shape(data)[2]
>>> for k in range(n):
>>> mydata=data[:,:,k]
>>> #plt.imshow(mydata+1) -->> this doesn't work
>>>
>>> Also ,in order to do the animation :
>>>
>>> grids=...(result from another function)
>>> result=showGraph(grids)
>>> fig=plt.figure()
>>> ani=animation.FuncAnimation(fig,result,interval=30,blit=True)
>>> plt.show()
>>>
>>> Right now the program says "TypeError: 'NoneType' object is not
>>> callable" (it has errors in the animation call)
>>>
>>> What should be my approach to this in order to have the animation?
>>>
>>> Thank you!
>>>
>>>
>> You're getting that error because the second argument to FuncAnimation
>> (`result` in your example) should be a function (not always; see example 2
>> linked below). Right now, if your `showGraphs` function is defined in full,
>> it returns a value of None, which gets saved to `result` (hence the error).
>>
>> You should take a look at some of the image animation examples
>> (ex1<http://matplotlib.sourceforge.net/examples/animation/dynamic_image.html>,
>> ex2<http://matplotlib.sourceforge.net/examples/animation/dynamic_image2.html>
>> ).
>>
>> -Tony
>>
>>
>> I did now :
>>
>>
>> def showGraphs(data):
>> data=sc.array([data])
>> n=sc.shape(data)[2]
>> ims=[]
>>
>> for k in range(n):
>> mydata=data[:,:,k]
>> im=plt.imshow(mydata+1)
>> ims.append([im])
>> return ims
>>
>> and now it gives me "TypeError: Invalid dimensions for image data.
>>
>>
> Please post short, but executable examples when possible. I'm not sure
> what your data looks like, but your call to `sc.array` is strange (I'm not
> sure why you have square brackets, which effectively adds an unnecessary
> dimension to your data).
>
> The code attached below should work.
>
> Cheers,
> -Tony
>
> import numpy as np
> import matplotlib.pyplot as plt
> from matplotlib.animation import ArtistAnimation
>
>
> fig = plt.figure()
>
> def showGraphs(data):
> data = np.asarray(data) # unnecessary in this example
> n = np.shape(data)[2]
>
> ims = []
> #for mydata in np.rollaxis(data, -1):
> for k in range(n):
> mydata = data[:, :, k]
> im = plt.imshow(mydata)
> ims.append([im])
> return ims
>
> # 5 frames of a random 20 x 20 image
> data = np.random.uniform(size=(20, 20, 5))
> ims = showGraphs(data)
>
> ani = ArtistAnimation(fig, ims)
> plt.show()
>
> Now,it gives me 2 figures (why 2?) but empty.(maybe i didn't convert right
> the matlab code below?)
> The data in the showGraphs function is the result from this function (in
> matlab):
> .........
> grids = zeros(n, n, t + 1);
> grids(:, :, 1) = rest;
> for i = 2:(t + 1)
> Extended = extendLat1(rest);
> rest = applyExtended(Extended);
> grids(:, :, i) = rest;
> end;
>
> And i did this in python:
>
> grids=sc.zeros((area,area,t+1))
> rest=grids[:,:,0]
> for i in range(1,t):
> extended=extend(rest)
> rest=apply_extend(extended)
> grids[:,:,i]=rest
> return grids
>
> Thanks for helping!
>
> Any help?Thanks!
>
> Sorry, but could you be a bit clearer:
* Did the example I provide work for you?
* Assuming it did, are you essentially replacing `data` in my example with
`grids` in this most recent example?
* I don't get 2 figures: are you asking about the code from my last message?
* Please provide a minimal, *executable* example
-Tony
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