Re: [Matplotlib-users] How to create a movie?? (from matlab code)

2012-01-23 Thread Tony Yu 
2012/1/23 Gousios George 

> **
> Στις 23/01/2012 08:10 μμ, ο/η Benjamin Root έγραψε:
>
> 2012/1/23 Gousios George 
>
>>  Στις 23/01/2012 07:48 μμ, ο/η Tony Yu έγραψε:
>>
>>
>>
>> 2012/1/23 Gousios George 
>>
>>>  Στις 23/01/2012 06:52 μμ, ο/η Tony Yu έγραψε:
>>>
>>>
>>>
>>> 2012/1/23 Gousios George 
>>>
  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 >>> > wrote:

>  Στις 21/01/2012 04:54 μμ, ο/η Tony Yu έγραψε:
>
>
>
> On Sat, Jan 21, 2012 at 9:07 AM, Gousios George  > 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,
> ex2
> ).
>
> -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

Re: [Matplotlib-users] How to create a movie?? (from matlab code)

2012-01-23 Thread Gousios George 

Στις 23/01/2012 08:10 μμ, ο/η Benjamin Root έγραψε:
2012/1/23 Gousios George >


Στις 23/01/2012 07:48 μμ, ο/η Tony Yu έγραψε:



2012/1/23 Gousios George mailto:gg...@windowslive.com>>

Στις 23/01/2012 06:52 μμ, ο/η Tony Yu έγραψε:



2012/1/23 Gousios George mailto: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
mailto: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
mailto: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

,
ex2

).

-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 be

Re: [Matplotlib-users] How to create a movie?? (from matlab code)

2012-01-23 Thread Benjamin Root 
2012/1/23 Gousios George 

> **
> Στις 23/01/2012 07:48 μμ, ο/η Tony Yu έγραψε:
>
>
>
> 2012/1/23 Gousios George 
>
>>  Στις 23/01/2012 06:52 μμ, ο/η Tony Yu έγραψε:
>>
>>
>>
>> 2012/1/23 Gousios George 
>>
>>>  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 
>>> wrote:
>>>
  Στις 21/01/2012 04:54 μμ, ο/η Tony Yu έγραψε:



 On Sat, Jan 21, 2012 at 9:07 AM, Gousios George 
 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,
 ex2
 ).

 -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
>>
>>  Ok,i 'll try!
>>
>> 1) Yes,your example works fine.
>> 2) Yes,i return grids from another function (work) doing :
>>
>> grids=work(area,...,time)
>> result=showGraphs(grids)
>> ani=ArtistAnimation(fig,result)
>>

Re: [Matplotlib-users] How to create a movie?? (from matlab code)

2012-01-23 Thread Gousios George 

Στις 23/01/2012 07:48 μμ, ο/η Tony Yu έγραψε:



2012/1/23 Gousios George >


Στις 23/01/2012 06:52 μμ, ο/η Tony Yu έγραψε:



2012/1/23 Gousios George mailto: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
mailto: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
mailto: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

,
ex2

).

-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=a

Re: [Matplotlib-users] How to create a movie?? (from matlab code)

2012-01-23 Thread Tony Yu 
2012/1/23 Gousios George 

> **
> Στις 23/01/2012 06:52 μμ, ο/η Tony Yu έγραψε:
>
>
>
> 2012/1/23 Gousios George 
>
>>  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 
>> wrote:
>>
>>>  Στις 21/01/2012 04:54 μμ, ο/η Tony Yu έγραψε:
>>>
>>>
>>>
>>> On Sat, Jan 21, 2012 at 9:07 AM, Gousios George 
>>> 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,
>>> ex2
>>> ).
>>>
>>> -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
>
> Ok,i 'll try!
>
> 1) Yes,your example works fine.
> 2) Yes,i return grids from another function (work) doing :
>
> grids=work(area,...,time)
> result=showGraphs(grids)
> ani=ArtistAnimation(fig,result)
> plt.show()
>
> The contents of the work function are shown above.
> I just want to make sure that i have done the conversion from matlab right.
> Maybe the problem is somewhere else?
>
> Thank you.
>
>
Did you get 2 figures with my original example, or just in yo

Re: [Matplotlib-users] How to create a movie?? (from matlab code)

2012-01-23 Thread Gousios George 

Στις 23/01/2012 06:52 μμ, ο/η Tony Yu έγραψε:



2012/1/23 Gousios George >


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
mailto: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
mailto: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

,
ex2

).

-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

Ok,i 'll try!

1) Yes,your example works fine.
2) Yes,i return grids from another function (work) doing :

grids=work(area,...,time)
r

Re: [Matplotlib-users] How to create a movie?? (from matlab code)

2012-01-23 Thread Tony Yu 
2012/1/23 Gousios George 

> **
> 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 wrote:
>
>>  Στις 21/01/2012 04:54 μμ, ο/η Tony Yu έγραψε:
>>
>>
>>
>> On Sat, Jan 21, 2012 at 9:07 AM, Gousios George 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,
>> ex2
>> ).
>>
>> -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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Re: [Matplotlib-users] How to create a movie?? (from matlab code)

2012-01-23 Thread Gousios George 

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 
mailto: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
mailto: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
,
ex2
).

-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!

--
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Re: [Matplotlib-users] How to create a movie?? (from matlab code)

2012-01-21 Thread Gousios George 

Στις 21/01/2012 07:05 μμ, ο/η Tony Yu έγραψε:



On Sat, Jan 21, 2012 at 11:31 AM, Gousios George 
mailto: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
mailto: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
,
ex2
).

-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!

--
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Re: [Matplotlib-users] How to create a movie?? (from matlab code)

2012-01-21 Thread Tony Yu 
On Sat, Jan 21, 2012 at 11:31 AM, Gousios George wrote:

> **
> Στις 21/01/2012 04:54 μμ, ο/η Tony Yu έγραψε:
>
>
>
> On Sat, Jan 21, 2012 at 9:07 AM, Gousios George 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,
> ex2
> ).
>
> -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()
--
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Re: [Matplotlib-users] How to create a movie?? (from matlab code)

2012-01-21 Thread Gousios George 

 21/01/2012 04:54 ??, ?/? Tony Yu ??:



On Sat, Jan 21, 2012 at 9:07 AM, Gousios George > 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 
, 
ex2 
).


-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.



--
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Re: [Matplotlib-users] How to create a movie?? (from matlab code)

2012-01-21 Thread Tony Yu 
On Sat, Jan 21, 2012 at 9:07 AM, Gousios George 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,
ex2
).

-Tony
--
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[Matplotlib-users] How to create a movie?? (from matlab code)

2012-01-21 Thread Gousios George 
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!


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