matplotlib-users Mailing List for matplotlib

>>>>> "Hans" == Hans Fangohr <H.F...@so...> writes:
 Hans> Hm. Have upgraded to 0.71. Now I don't get the error message
 Hans> anymore, however, once I close the figure window, the IDLE
 Hans> (-n) prompt doesn't respond anymore. (Same scenario as
 Hans> described in last email.)
 Hans> Ideas?
Well, if you are using matplotlib interactively from within IDLE< then
interactive : True should be set in your rc file, no?
JDH

Hi John,
> Hans> The figure windows is interacting (despite the error
> Hans> message). Once I close the figure window, I can't get back
> Hans> to the Python prompt; i.e. the shell doesn't respond any
> Hans> more.
>
> Hans> Do we expect matplotlib (0.70.1) to work in non-interactive
> Hans> mode with "IDLE -n"?
>
> This is an unrelated bug fixed in 0.71.
>
> Thanks for the report!
Hm. Have upgraded to 0.71. Now I don't get the error message anymore, 
however, once I close the figure window, the IDLE (-n) prompt doesn't 
respond anymore. (Same scenario as described in last email.)
Ideas?
> JDH
>
>
>
>
>
>
>
>
-------------------------------------------------
Dr Hans Fangohr
Computational Engineering & Design Research Group
School of Engineering Sciences
University of Southampton
Southampton, SO17 1BJ
United Kingdom
Location: Building 25, Room 1027
phone : +44 (0) 23 8059 8345
fax : +44 (0) 23 8059 7082
email : fa...@so...
-------------------------------------------------

 Hi John,
I saw that you add in the load function the possibility to have some 
line comment with the character '%'. I would like to change this 
function and generalize a little bit this. Not everyone is using the 
character '%' but some other like '#' or '!'. So I add this possibilty 
to the function. I don't know if you are agree with it but in case I 
join the change below.
Another things, I think there are a small bug for the Tkagg backend. 
When I close the windows instead to come back to my shell I'm arriving 
in a python shell. I tried (when I had my laptop) with the Gtkagg 
backend and I didn't notice this problem.
Thanks.
 Nicolas
def load(fname,comments='%'):
 """
 Load ASCII data from fname into an array and return the array.
 The data must be regular, same number of values in every row
 fname can be a filename or a file handle
 matfile data is not currently supported, but see
 Nigel Wade's matfile ftp://ion.le.ac.uk/matfile/matfile.tar.gz
 Example usage:
 x,y = load('test.dat') # data in two columns
 X = load('test.dat') # a matrix of data
 x = load('test.dat') # a single column of data
 """
 if is_string_like(fname):
 fh = file(fname)
 elif hasattr(fname, 'seek'):
 fh = fname
 else:
 raise ValueError('fname must be a string or file handle')
 
 X = []
 numCols = None
 for line in fh:
 line = line[:line.find(comments)].strip()
 if not len(line): continue
 row = [float(val) for val in line.split()]
 thisLen = len(row)
 if numCols is not None and thisLen != numCols:
 raise ValueError('All rows must have the same number of 
columns')
 X.append(row)
 X = array(X)
 r,c = X.shape
 if r==1 or c==1:
 X.shape = max([r,c]),
 return X

>>>>> "Hans" == Hans Fangohr <H.F...@so...> writes:
 Hans> The figure windows is interacting (despite the error
 Hans> message). Once I close the figure window, I can't get back
 Hans> to the Python prompt; i.e. the shell doesn't respond any
 Hans> more.
 Hans> Do we expect matplotlib (0.70.1) to work in non-interactive
 Hans> mode with "IDLE -n"?
This is an unrelated bug fixed in 0.71.
Thanks for the report!
JDH

Hi John,
I am coming back to our earlier discussion ...
>>>>>>> "Hans" == Hans Fangohr <H.F...@so...> writes:
>> 
>>> Hm. Done that. A figure window pops up immediately but is
>>> not being updated correctly: a part of the graph is visible,
>>> the other part of the figure (which was underneath another
>>> window initially) appears white. The titel of the figure
>>> says "Figure 1 (Not responding)". IDLE, however, responds
>>> happily ;-) T
>> 
>> Todd, many moons ago you wrote me and said I had inadvertently screwed
>> up something in tkagg show that broke the idle -n behavior. If I
>> recall correctly, we never reverted, since I didn't understand exactly
>> what to do. Perhaps you could revisit the current tkagg versus the
>> old one to make sure it is right.
>> 
>> Hans, does it make a difference if you uncomment
>> 
>> #os.environ['PYTHONINSPECT'] = '1'
>> 
>> in the show method of
>> site-packages/matplotlib/backends/backend_tkagg.py? You should set
>> 'interactive : True' as Todd suggested. Do not use show, as it is not
>> designed for interactive use. I suggest carefully testing all 4
>> combinations: with and without the PYTHONINSPECTmline, and with and
>> without -n.
>
> Setting 'interactive=True' in .matplotlibrc
>
> IDLE #os.environ['PYTHONINSPECT'] = '1' -> fail
> IDLE -n #os.environ['PYTHONINSPECT'] = '1' -> fail
> IDLE os.environ['PYTHONINSPECT'] = '1' -> fail
> IDLE -n os.environ['PYTHONINSPECT'] = '1' -> success
>
> So that's good.
This doesn't work in non-interactive mode. What I observe is this:
- start Idle with -n (the "==== No Subprocess ====" message appears).
- at prompt issue commands:
>>>import pylab
>>>pylab.plot(range(10))
>>>pylab.show()
- figure windows shows up
- python reports this error message:
>>> pylab.show()
Exception in Tkinter callback
Traceback (most recent call last):
 File "C:\Python23\lib\lib-tk\Tkinter.py", line 1345, in __call__
 return self.func(*args)
 File 
"C:\Python23\lib\site-packages\matplotlib\backends\backend_tkagg.py",
line 215, in key_release
 FigureCanvasBase.key_release_event(self, key)
 File "C:\Python23\Lib\site-packages\matplotlib\backend_bases.py",
line 677, in key_release_event
 event = KeyEvent('key_release_event', self, key, self._lastx, 
self._lasty)
 File "C:\Python23\Lib\site-packages\matplotlib\backend_bases.py",
line 640, in __init__
 LocationEvent.__init__(self, name, canvas, x, y)
 File "C:\Python23\Lib\site-packages\matplotlib\backend_bases.py",
line 566, in __init__
 if a.in_axes(self.x, self.y):
 File "C:\Python23\Lib\site-packages\matplotlib\axes.py", line 1544, in 
in_axes
 return self.bbox.contains(xwin, ywin)
TypeError: float() argument must be a string or a number
The figure windows is interacting (despite the error message). Once I 
close the figure window, I can't get back to the Python prompt; i.e. the 
shell doesn't respond any more.
Do we expect matplotlib (0.70.1) to work in non-interactive mode with 
"IDLE -n"?
Thanks,
Hans