ImportError: No module named _backend_gdk on fedora16 after upgrading to 1.2.0

Community matplotlib-users
1

Dear all,

I upgrade my matplotlib from 1.1.1 to 1.2.0 using the command:

sudo pip-python install --upgrade matplotlib

it completes successfully. However I tried to

import matplotlib.pyplot as plt, I get the error:

/usr/lib64/python2.7/site-packages/matplotlib/backends/backend_gdk.py in ()
27 from matplotlib.mathtext import MathTextParser
28 from matplotlib.transforms import Affine2D
—> 29 from matplotlib.backends._backend_gdk import pixbuf_get_pixels_array
30
31 backend_version = “%d.%d.%d” % gtk.pygtk_version

in my ~/.matplotlib/matplotlibrc, I am using:
backend : GTKAgg

So what backend should I choose? thanks for any help,

Chao

···

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Chao YUE
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2

Did you have all of the gtk/gdk development packages installed? If the installer can’t find them to compile _backend_gdk.so, then it wouldn’t be made available in the install. As a work-around, you could always use TkAgg, as that is a pure-python backend.

I hope that helps!
Ben Root

···

On Thu, Jan 24, 2013 at 10:13 AM, Chao YUE <chaoyuejoy@…287…> wrote:

Dear all,

I upgrade my matplotlib from 1.1.1 to 1.2.0 using the command:

sudo pip-python install --upgrade matplotlib

it completes successfully. However I tried to

import matplotlib.pyplot as plt, I get the error:

/usr/lib64/python2.7/site-packages/matplotlib/backends/backend_gdk.py in ()
27 from matplotlib.mathtext import MathTextParser
28 from matplotlib.transforms import Affine2D
—> 29 from matplotlib.backends._backend_gdk import pixbuf_get_pixels_array

 30
 31 backend_version = "%d.%d.%d" % gtk.pygtk_version

in my ~/.matplotlib/matplotlibrc, I am using:
backend : GTKAgg

So what backend should I choose? thanks for any help,

Chao

3

    Dear all,

    I upgrade my matplotlib from 1.1.1 to 1.2.0 using the command:

    sudo pip-python install --upgrade matplotlib

    it completes successfully. However I tried to

    import matplotlib.pyplot as plt, I get the error:

    /usr/lib64/python2.7/site-packages/matplotlib/backends/backend_gdk.py in
    <module>()
          27 from matplotlib.mathtext import MathTextParser
          28 from matplotlib.transforms import Affine2D
    ---> 29 from matplotlib.backends._backend_gdk import
    pixbuf_get_pixels_array
          30
          31 backend_version = "%d.%d.%d" % gtk.pygtk_version

    in my ~/.matplotlib/matplotlibrc, I am using:
    backend : GTKAgg

    So what backend should I choose? thanks for any help,

    Chao

Did you have all of the gtk/gdk development packages installed? If the
installer can't find them to compile _backend_gdk.so, then it wouldn't
be made available in the install. As a work-around, you could always
use TkAgg, as that is a pure-python backend.

No, we have a _tkagg.cpp.

qt4agg and wxagg use no extension code beyond that for agg itself.

Eric

···

On 2013/01/24 5:36 AM, Benjamin Root wrote:

On Thu, Jan 24, 2013 at 10:13 AM, Chao YUE <chaoyuejoy@...287... > <mailto:chaoyuejoy@…287…>> wrote:

I hope that helps!
Ben Root