You need to set a different backend in your matplotlibrc or specify it first.
import matplotlib
matplotlib.use('Agg')
You can also run scripts passing the backend:
python lab1_ex2.py -dAgg
On Jan 9, 2008 8:41 AM, Francesco Pretto <[EMAIL PROTECTED]> wrote:
> Hi, after having correctly compiled matplotlib, now is time to test
> something (I need at least to get it something working before I can
> start hack it autonomously =). Unfortunately, it's not usable: it
> complains about not being able to load "_tkagg" module. The fact is I
> don't want "tkagg" backend at all! Here is the backends dependencies
> detect log:
>
> OPTIONAL BACKEND DEPENDENCIES
> libpng: found, but unknown version (no pkg-config)
> Tkinter: no
> * Tkinter present, but header files are not found.
> * You may need to install development packages.
> wxPython: no
> * wxPython not found
> Gtk+: gtk+: 2.10.11, glib: 2.12.11, pygtk: 2.10.6,
> pygobject: 2.12.3
> Qt: no
> Qt4: no
> Cairo: 1.2.6
>
> As it should be clear, I want to use the a gtk+ aware backend, and
> initially in fact I used a customized "setup.cfg"; seeing the error I
> tryed deleting the customized "setup.cfg", but without results. Is
> there some problems with backend selection on windows platform?
> I hope gtk+ backends are supported. Follows 2 traces of the error
> running an ipython shell and a test python program (it works on
> linux).
>
> Any help is appreciated.
>
> Thanks,
> Francesco
>
> ---------------------------------------------------------------------------
>
> Here is the trace in ipython trying to run sample test program:
>
> In [3]: run lab1_ex2.py
>
> ImportError Traceback (most recent call last)
>
> C:\Documents and Settings\Public\desktop\lab1_ex2.py in <module>()
> 1 from numpy import *
> 2 from scipy import *
> ----> 3 from pylab import *
> 4
> 5 n=100
>
> c:\python25\Lib\site-packages\pylab.py in <module>()
> ----> 1
> 2
> 3 from matplotlib.pylab import *
> 4 import matplotlib.pylab
> 5 __doc__ = matplotlib.pylab.__doc__
>
> c:\python25\Lib\site-packages\matplotlib\pylab.py in <module>()
> 290
> 291
> --> 292 from matplotlib.pyplot import *
> 293
> 294
>
> c:\python25\Lib\site-packages\matplotlib\pyplot.py in <module>()
> 35
> 36 from matplotlib.backends import pylab_setup
> ---> 37 new_figure_manager, draw_if_interactive, show = pylab_setup()
> 38
> 39 def switch_backend(newbackend):
>
> c:\python25\Lib\site-packages\matplotlib\backends\__init__.py in pylab_setup()
> 22 backend_name = 'backend_'+backend.lower()
> 23 backend_mod = __import__('matplotlib.backends.'+backend_name,
> ---> 24 globals(),locals(),[backend_name])
> 25
> 26 # Things we pull in from all backends
>
> c:\python25\Lib\site-packages\matplotlib\backends\backend_tkagg.py in
> <module>()
>
> 6
> 7 import Tkinter as Tk, FileDialog
> ----> 8 import tkagg # Paint image to Tk photo blitter
> extension
>
> 9 from backend_agg import FigureCanvasAgg
> 10
>
> c:\python25\Lib\site-packages\matplotlib\backends\tkagg.py in <module>()
> ----> 1
> 2
> 3 import _tkagg
> 4 import Tkinter as Tk
> 5
> 6 def blit(photoimage, aggimage, bbox=None, colormode=1):
> 7 tk = photoimage.tk
>
> ImportError: No module named _tkagg
> WARNING: Failure executing file: <lab1_ex2.py>
>
> ---------------------------------------------------------------------------
>
> Here is another trace trying to run ipython with "--pylab" switch:
>
> Traceback (most recent call last):
> File "C:\Python25\scripts\ipython", line 27, in <module>
> IPython.Shell.start().mainloop()
> File "C:\Python25\lib\site-packages\IPython\Shell.py", line 1152, in start
> return shell(user_ns = user_ns)
> File "C:\Python25\lib\site-packages\IPython\Shell.py", line 1049, in
> __init__
> shell_class=MatplotlibShell)
> File "C:\Python25\lib\site-packages\IPython\Shell.py", line 74, in __init__
> debug=debug,shell_class=shell_class)
> File "C:\Python25\Lib\site-packages\IPython\ipmaker.py", line 95, in
> make_IPyt
> hon
> embedded=embedded,**kw)
> File "C:\Python25\lib\site-packages\IPython\Shell.py", line 589, in __init__
> user_ns,b2 = self._matplotlib_config(name,user_ns)
> File "C:\Python25\lib\site-packages\IPython\Shell.py", line 530, in
> _matplotli
> b_config
> import matplotlib.pylab as pylab
> File "c:\python25\Lib\site-packages\matplotlib\pylab.py", line 292, in
> <module
> >
> from matplotlib.pyplot import *
> File "c:\python25\Lib\site-packages\matplotlib\pyplot.py", line 37, in
> <module
> >
> new_figure_manager, draw_if_interactive, show = pylab_setup()
> File "c:\python25\Lib\site-packages\matplotlib\backends\__init__.py", line
> 24,
> in pylab_setup
> globals(),locals(),[backend_name])
> File "c:\python25\Lib\site-packages\matplotlib\backends\backend_tkagg.py",
> lin
> e 8, in <module>
> import tkagg # Paint image to Tk photo blitter extension
> File "c:\python25\Lib\site-packages\matplotlib\backends\tkagg.py", line 1,
> in
> <module>
> import _tkagg
> ImportError: No module named _tkagg
>
> -------------------------------------------------------------------------
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