Re: [Matplotlib-users] _backend_gdk not found

[John H. <jd...@gm...>]

On Wed, Nov 25, 2009 at 8:01 AM, federico roncarolo
<Fed...@ce...> wrote:
> Hi,
>
> I'm new with matplotlib and
> I'm trying to embed matplotlib objects into pygtk.
>
> I tried different backend imports (GTKAgg, GTK, GTKCairo) and always
> get the same error (attached below) referring to the missing
> _backend_gdk package.
>
> I work with MAC os x 10.6, python 2.6, pygtk2, matplotlib 0.99.1.1,
> all installed via macports , even though I tried to install matplotlib
> from source via the setup.py script and I get exactely the same problem.
>
> Could you help?
>

matplotlib is probably not finding pygtk at build time -- you need
have pkg-config installed, and  locate your pygtk-2.0.pc file and then
add that path to your PKG_CONFIG_PATH.  You can check the output of
the build script at the beginning in the section


OPTIONAL BACKEND DEPENDENCIES
                libpng: 1.2.27
               Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
              wxPython: 2.8.8.0
                        * WxAgg extension not required for wxPython >= 2.8
                  Gtk+: gtk+: 2.14.4, glib: 2.18.2, pygtk: 2.13.0,
                        pygobject: 2.15.3
       Mac OS X native: no
                    Qt: Qt: 3.3.8, PyQt: 3.17.4
                   Qt4: Qt: 4.4.3, PyQt4: 4.4.4
                 Cairo: 1.4.12


You need to have an entry for Gtk or else the backend will not be built.


JDH