Re: [Matplotlib-users] Matplotlib installation with Python(x,y)

2013-10-04 Thread ajdcds 
Thank you Mike, Werner and Benjamin for the good, and very fast, support.

Kind regards,
Antonio



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Re: [Matplotlib-users] Matplotlib installation with Python(x,y)

2013-10-03 Thread Benjamin Root 
On Thu, Oct 3, 2013 at 9:22 AM, ajdcds  wrote:

> Benjamin, thank you very much for the tip!
>
> If I do
>
> import matplotlib
> matplotlib.use("TkAgg")
>
> This is only valid for the current script that is running, the matplotlibrc
> remains the same, right?
>
>
Yes, that is correct.
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Re: [Matplotlib-users] Matplotlib installation with Python(x,y)

2013-10-03 Thread ajdcds 
Benjamin, thank you very much for the tip!

If I do

import matplotlib
matplotlib.use("TkAgg")

This is only valid for the current script that is running, the matplotlibrc
remains the same, right?



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Re: [Matplotlib-users] Matplotlib installation with Python(x,y)

2013-10-03 Thread Benjamin Root 
On Thu, Oct 3, 2013 at 6:35 AM, ajdcds  wrote:

> Sorry, of course it does not work, the import is incorrect!
>
> It should be
>
> import matplotlib as plt
> plt.rcParams['backend'] = 'TkAgg'
>
> or simply
> import matplotlib
> matplotlib.rcParams['backend'] = 'TkAgg'
>
>
Errr... no, don't do "import matplotlib as plt". That is just confusing.

To change backends, do the following:

import matplotlib
matplotlib.use("TkAgg")

Because backends are loaded upon import of matplotlib, changing the rcParam
after importing matplotlib is too late. You force a switch of the backend
via the "use()" function.
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Re: [Matplotlib-users] Matplotlib installation with Python(x,y)

2013-10-03 Thread ajdcds 
Sorry, of course it does not work, the import is incorrect!

It should be

import matplotlib as plt 
plt.rcParams['backend'] = 'TkAgg' 

or simply 
import matplotlib
matplotlib.rcParams['backend'] = 'TkAgg' 




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Re: [Matplotlib-users] Matplotlib installation with Python(x,y)

2013-10-03 Thread ajdcds 
We were able to find the difference when installing Matplotlib via
Python(x,y) or as a separate package.
The difference is on paramater /backend/ on /matplotlibrc/ file.
/Python(x,y)-2.6.6.2.exe/ set the parameter to *Qt4Agg*
/matplotlib-1.0.1.win32-py2.6.exe/ sets the parameter to *TKAgg*

if backend : TKAgg
then the error
/  File
"C:\Python26\lib\site-packages\matplotlib\backends\qt4_editor\formlayout.py",
line 51, in 
raise ImportError, "Warning: formlayout requires PyQt4 >v4.3"
ImportError: Warning: formlayout requires PyQt4 >v4.3/ 
Does not appear anymore.

Now looking how to use TKAgg without changing the matplotlibrc.
I've tried:

import matplotlib.pyplot as plt
plt.rcParams['backend'] = 'TkAgg'

But doesn't see to work.

Any suggestions?



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Re: [Matplotlib-users] Matplotlib installation with Python(x,y)

2013-10-03 Thread Werner F. Bruhin 
Hi,

On 03/10/2013 09:31, ajdcds wrote:
> If doing
>
> c:\Python26\python.exe file.py
>
> Then the error is on import private files, stated on my first post as
> /import /
I didn't see a response from you on this:

c:\Python26\python.exe

from PyQt4.QtGui import QFormLayout

Does this give an import error?

If above does not give an import error can you try:

c:\Python26\python.exe 
folder_with_matplot_examples/user_interfaces/embedding_in_qt4.py

If this works then I am guessing that your 'file.py' does somehow 
manipulate the sys.path.

Werner

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Re: [Matplotlib-users] Matplotlib installation with Python(x,y)

2013-10-03 Thread ajdcds 
If doing

c:\Python26\python.exe file.py

Then the error is on import private files, stated on my first post as
/import /



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Re: [Matplotlib-users] Matplotlib installation with Python(x,y)

2013-10-02 Thread Werner F. Bruhin 

Hi Antonio,

(forgot to copy list - for archive)

On 02/10/2013 17:05, António de Sousa wrote:

Hi Werner,

thank you for your reply.

Yes, the path is C:\Python26\lib\

Can it be that the error message is coming from a different location?
Meaning that there may be duplicate files (e.g. python related 
DLLs) in the system?
I am guessing/suspecting that you don't always run the Python version 
you think you are running.


So, just to double check, if you do:

c:\Python26\python.exe

from PyQt4.QtGui import QFormLayout

You get no error?

'file.py' is your script which runs matplotlib, yes?

if above gives no error what happens if you do:

c:\Python26\python.exe file.py

Werner
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Re: [Matplotlib-users] Matplotlib installation with Python(x,y)

2013-10-02 Thread ajdcds 
No error message:

>>> from PyQt4.QtGui import QFormLayout
>>>




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Re: [Matplotlib-users] Matplotlib installation with Python(x,y)

2013-10-02 Thread Michael Droettboom 
It looks like the PyQt4 installation in python(x,y) is somehow broken.  
If you just open up the python(x, y) interpreter and type

>>> from PyQt4.QtGui import QFormLayout


or

>>> from PyQt4 import QtGui


what happens?  If that fails too, I'd say the bug is in python(x, y) (or 
however PyQt4 got installled there).

Mike

On 10/02/2013 09:19 AM, ajdcds wrote:
> Hi Mike,
>
> thank you for your interest.
>
> If I replace the following statement on formlayout.py:
>
> /try:
>  from PyQt4.QtGui import QFormLayout
> except ImportError:
>  raise ImportError, "Warning: formlayout requires PyQt4 >v4.3"/
>   
> With this one:
>
> /from PyQt4.QtGui import QFormLayout/
>
> Then the error is the following:
>
> /Traceback (most recent call last):
>File "file.py", line 83, in 
>  import 
>File "includes\something.py", line 31, in 
>  import matplotlib.pyplot as plt
>File "C:\Python26\lib\site-packages\matplotlib\pyplot.py", line 95, in
> 
>  new_figure_manager, draw_if_interactive, show = pylab_setup()
>File "C:\Python26\lib\site-packages\matplotlib\backends\__init__.py", line
> 25, in pylab_setup
>  globals(),locals(),[backend_name])
>File
> "C:\Python26\lib\site-packages\matplotlib\backends\backend_qt4agg.py", line
> 12, in 
>  from backend_qt4 import QtCore, QtGui, FigureManagerQT, FigureCanvasQT,\
>File "C:\Python26\lib\site-packages\matplotlib\backends\backend_qt4.py",
> line 18, in 
>  import matplotlib.backends.qt4_editor.figureoptions as figureoptions
>File
> "C:\Python26\lib\site-packages\matplotlib\backends\qt4_editor\figureoptions.py",
> line 11, in 
>  import matplotlib.backends.qt4_editor.formlayout as formlayout
>File
> "C:\Python26\lib\site-packages\matplotlib\backends\qt4_editor\formlayout.py",
> line 53, in 
>  from PyQt4.QtGui import QFormLayout
> ImportError: DLL load failed: The specified procedure could not be found./
>
>
>
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Re: [Matplotlib-users] Matplotlib installation with Python(x,y)

2013-10-02 Thread ajdcds 
Hi Mike,

thank you for your interest.

If I replace the following statement on formlayout.py:

/try: 
from PyQt4.QtGui import QFormLayout 
except ImportError: 
raise ImportError, "Warning: formlayout requires PyQt4 >v4.3"/

With this one:

/from PyQt4.QtGui import QFormLayout/

Then the error is the following:

/Traceback (most recent call last):
  File "file.py", line 83, in 
import 
  File "includes\something.py", line 31, in 
import matplotlib.pyplot as plt
  File "C:\Python26\lib\site-packages\matplotlib\pyplot.py", line 95, in

new_figure_manager, draw_if_interactive, show = pylab_setup()
  File "C:\Python26\lib\site-packages\matplotlib\backends\__init__.py", line
25, in pylab_setup
globals(),locals(),[backend_name])
  File
"C:\Python26\lib\site-packages\matplotlib\backends\backend_qt4agg.py", line
12, in 
from backend_qt4 import QtCore, QtGui, FigureManagerQT, FigureCanvasQT,\
  File "C:\Python26\lib\site-packages\matplotlib\backends\backend_qt4.py",
line 18, in 
import matplotlib.backends.qt4_editor.figureoptions as figureoptions
  File
"C:\Python26\lib\site-packages\matplotlib\backends\qt4_editor\figureoptions.py",
line 11, in 
import matplotlib.backends.qt4_editor.formlayout as formlayout
  File
"C:\Python26\lib\site-packages\matplotlib\backends\qt4_editor\formlayout.py",
line 53, in 
from PyQt4.QtGui import QFormLayout
ImportError: DLL load failed: The specified procedure could not be found./



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Re: [Matplotlib-users] Matplotlib installation with Python(x,y)

2013-10-02 Thread Michael Droettboom 
On 10/02/2013 05:35 AM, ajdcds wrote:
> I have a system that has Python(x,y)-2.6.6.2.exe installed.
> When running the script "file.py" the following error occurs:
>
> /Traceback (most recent call last):
>   File "file.py", line xx, in 
> import 
>   File "includes\something.py", line 31, in 
> import matplotlib.pyplot as plt
>   File "C:\Python26\lib\site-packages\matplotlib\pyplot.py", line 95, in
> 
> new_figure_manager, draw_if_interactive, show = pylab_setup()
>   File "C:\Python26\lib\site-packages\matplotlib\backends\__init__.py", line
> 25, in pylab_setup
> globals(),locals(),[backend_name])
>   File "C:\Python26\lib\site-packages\matplotlib\backends\backend_qt4agg.py",
> line 12, in 
> from backend_qt4 import QtCore, QtGui, FigureManagerQT, FigureCanvasQT,\
>   File "C:\Python26\lib\site-packages\matplotlib\backends\backend_qt4.py",
> line 18, in 
> import matplotlib.backends.qt4_editor.figureoptions as figureoptions
>   File
> "C:\Python26\lib\site-packages\matplotlib\backends\qt4_editor\figureoptions.py",
> line 11, in 
> import matplotlib.backends.qt4_editor.formlayout as formlayout
>   File
> "C:\Python26\lib\site-packages\matplotlib\backends\qt4_editor\formlayout.py",
> line 51, in 
> raise ImportError, "Warning: formlayout requires PyQt4 >v4.3"
> ImportError: Warning: formlayout requires PyQt4 >v4.3 /
>
> I think this error message is not related with the real problem, since this
> is just an hardcoded string that is displayed in case the import fails
> (formlayout.py):
> /try:
>  from PyQt4.QtGui import QFormLayout
> except ImportError:
>  raise ImportError, "Warning: formlayout requires PyQt4 >v4.3"/
>
> If I remove this error message the new error message is that he cannot find
> the DLL.

Can you copy-and-paste the exact error message?  That will offer some clues.

Mike

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