FAQ
Hello,

I just installed Matplotlib (and NumPy) on a windows XP machine, and
I'm getting the following traceback when I try to use the TkAgg
backend.

Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit
(Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
import matplotlib
matplotlib.use('TkAgg')
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python25\Lib\site-packages\matplotlib\backends
\backend_tkagg.py",
line 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: DLL load failed: The specified module could not be found.
>>>

I found one old (2004) post
http://mail.python.org/pipermail/python-list/2004-April/258963.html
that seems to indicate that some sort version mismatch of the Tk/Tcl
libraries may be to blame. But I don't know how to diagnose that or
what to do about it.

FWIW, I installed using matplotlib-0.90.1.win32-py2.5.exe and
numpy-1.0.3.1.win32-py2.5.exe.

Thanks in advance for any help.
Sincerely,
~Simon

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  • Simon Forman at Sep 26, 2007 at 9:01 pm

    On Sep 26, 1:19 pm, Simon Forman wrote:
    Hello,

    I just installed Matplotlib (and NumPy) on a windows XP machine, and
    I'm getting the following traceback when I try to use the TkAgg
    backend.

    Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit
    (Intel)] on
    win32
    Type "help", "copyright", "credits" or "license" for more information.>>> import matplotlib
    matplotlib.use('TkAgg')
    from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
    Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
    File "C:\Python25\Lib\site-packages\matplotlib\backends
    \backend_tkagg.py",
    line 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: DLL load failed: The specified module could not be found.



    I found one old (2004) posthttp://mail.python.org/pipermail/python-list/2004-April/258963.html
    that seems to indicate that some sort version mismatch of the Tk/Tcl
    libraries may be to blame. But I don't know how to diagnose that or
    what to do about it.

    FWIW, I installed using matplotlib-0.90.1.win32-py2.5.exe and
    numpy-1.0.3.1.win32-py2.5.exe.

    Thanks in advance for any help.
    Sincerely,
    ~Simon

    Ah, nevermind. I was missing MSVCP71.dll. Once I included that in the
    system folder matplotlib ran fine.

    Sorry for the "noise".
    ~Simon
  • Simon Forman at Sep 26, 2007 at 9:02 pm

    On 9/26/07, Simon Forman wrote:
    Hello,

    I just installed Matplotlib (and NumPy) on a windows XP machine, and
    I'm getting the following traceback when I try to use the TkAgg
    backend.

    Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit
    (Intel)] on
    win32
    Type "help", "copyright", "credits" or "license" for more information.
    import matplotlib
    matplotlib.use('TkAgg')
    from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
    Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
    File "C:\Python25\Lib\site-packages\matplotlib\backends
    \backend_tkagg.py",
    line 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: DLL load failed: The specified module could not be found.
    I found one old (2004) post
    http://mail.python.org/pipermail/python-list/2004-April/258963.html
    that seems to indicate that some sort version mismatch of the Tk/Tcl
    libraries may be to blame. But I don't know how to diagnose that or
    what to do about it.

    FWIW, I installed using matplotlib-0.90.1.win32-py2.5.exe and
    numpy-1.0.3.1.win32-py2.5.exe.

    Thanks in advance for any help.
    Sincerely,
    ~Simon

    --
    http://mail.python.org/mailman/listinfo/python-list
    Please disregard. I was missing MSVCP71.dll.

    Sorry for the 'noise',
    Sincerely,
    ~Simon

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postedSep 26, '07 at 5:19p
activeSep 26, '07 at 9:02p
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