2012/10/17 Eric Firing <efir...@hawaii.edu>
> On 2012/10/16 9:22 PM, Francesco Montesano wrote:
> > Dear list,
> >
> > I've see a difference between the default backend between
> >
> > v1.1.1 (shipped with kubuntu 12.10dev) and v1.2.0.rc1, 1.2.0rc2 and
> > master (1.3.x).
> >
> >
> > My set up is to call ipython with pylab and turn on interactive mode. I
> > still haven't copied over my matplotlibrc file from my work computer
> > (there I use qtagg, if I remember well)
> >
> >
> > On v1.1.1 the default is [backend: TkAgg], while in the other two cases
> > it is [backend: agg]. Is there some reason for this difference?
>
> The default should be based on what is found when mpl is built, so it
> sounds like when you are building v1.2.x, none of the supported gui
> toolkits is being found. I don't know why that is. Are you installing
> on a system that has gui toolkits already installed?
I think so, as the v1.1.1 shipped with my OS is using TkAgg as backend and
I can plot interactively.
When I build from source I get
OPTIONAL BACKEND DEPENDENCIES
libpng: found, but unknown version (no pkg-config)
Tkinter: no
* Using default library and include directories for
* Tcl and Tk because a Tk window failed to open.
* You may need to define DISPLAY for Tk to work so
* that setup can determine where your libraries are
* located. Tkinter present, but header files are not
* found. You may need to install development
* packages.
* You may need to install 'dev' package(s) to
* provide header files.
Gtk+: no
* Could not find Gtk+ headers in any of
* '/usr/local/include', '/usr/include',
* '/usr/local/include', '/usr/include', '.'
Mac OS X native: no
Qt: no
Qt4: Qt: 4.8.2, PyQt4: 4.9.3
PySide: no
Cairo: 1.8.8
Could be a problem with Tkinter and dev packages.
>
> One useful
> technique with ubuntu derivatives is to do
sudo apt-get build-dep python-matplotlib
>
> probably it's easier if I just switch to qtagg, as I already have it
> It might pull in more than you really want, but it will certainly
> include gui toolkits.
>
> Eric
>
Thanks,
Francesco
>
> >
> >
> > cheers,
> >
> > Francesco
> >
> >
> >
> >
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