On Wed, Oct 17, 2012 at 9:12 AM, Francesco Montesano <franz.berges...@gmail.com> wrote: > > > 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
Packages have whatever default backend the maintainer decided to build them with. For example, the macports packaged version of matplotlib is maintained by someone who specifies the macosx backend to be the default. When building from source, I think the TkAgg backend is the default, because most platforms have tkinter installed out of the box. Since it appears you don't have Tkinter installed, Agg is the default. Agg is a non-gui backend (but it produces awesome output). -- Damon McDougall http://www.damon-is-a-geek.com B2.39 Mathematics Institute University of Warwick Coventry West Midlands CV4 7AL United Kingdom ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
