This is a shot in the dark, but I've seen this before when matplotlib
didn't get fully rebuilt after a numpy upgrade.
Mike
On 08/04/2011 01:13 PM, Alexey Uimanov wrote:
> here is the sample code "embedding_in_gtk2.py"
>
> 6 import gtk
> 7
> 8 from matplotlib.figure import Figure
> 9 from numpy import arange, sin, pi
> 10
> 11 # uncomment to select /GTK/GTKAgg/GTKCairo
> 12 #from matplotlib.backends.backend_gtk import FigureCanvasGTK as
> FigureCanvas
> 13 from matplotlib.backends.backend_gtkagg import FigureCanvasGTKAgg
> as FigureCanvas
> 14 #from matplotlib.backends.backend_gtkcairo import
> FigureCanvasGTKCairo as FigureCanvas
> 15
> 16 # or NavigationToolbar for classic
> 17 #from matplotlib.backends.backend_gtk import NavigationToolbar2GTK
> as NavigationToolbar
> 18 from matplotlib.backends.backend_gtkagg import
> NavigationToolbar2GTKAgg as NavigationToolbar
> 19
> 20
> 21 win = gtk.Window()
> 22 win.connect("destroy", lambda x: gtk.main_quit())
> 23 win.set_default_size(400,300)
> 24 win.set_title("Embedding in GTK")
> 25
> 26 vbox = gtk.VBox()
> 27 win.add(vbox)
> 28
> 29 fig = Figure(figsize=(5,4), dpi=100)
> 30 import pudb
> 31 pudb.set_trace()
> 32 ax = fig.add_subplot(111)
> 33 t = arange(0.0,3.0,0.01)
> 34 s = sin(2*pi*t)
> 35
> 36 ax.plot(t,s)
> 37
> 38
> 39 canvas = FigureCanvas(fig) # a gtk.DrawingArea
> 40 vbox.pack_start(canvas)
> 41 toolbar = NavigationToolbar(canvas, win)
> 42 vbox.pack_start(toolbar, False, False)
> 43
> 44
> 45 win.show_all()
> 46 gtk.main()
>
> on line 36 error segfault.
> Here is the gdb session
>
> Starting program: /usr/bin/python2.7 embedding_in_gtk2.py
> [Thread debugging using libthread_db enabled]
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x00007fffeda71594 in __cxa_allocate_exception () from
> /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.5/libstdc++.so.6
> #0 0x00007fffeda71594 in __cxa_allocate_exception () from
> /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.5/libstdc++.so.6
> #1 0x00007fffe4830164 in py_to_agg_transformation_matrix(_object*, bool) ()
> from /usr/lib64/python2.7/site-packages/matplotlib/_path.so
> #2 0x00007fffe483addb in _path_module::update_path_extents(Py::Tuple const&)
> ()
> from /usr/lib64/python2.7/site-packages/matplotlib/_path.so
> #3 0x00007fffe4841ad8 in
> Py::ExtensionModule<_path_module>::invoke_method_varargs(void*,
> Py::Tuple const&) ()
> from /usr/lib64/python2.7/site-packages/matplotlib/_path.so
> #4 0x00007fffe482b54d in method_varargs_call_handler () from
> /usr/lib64/python2.7/site-packages/matplotlib/_path.so
> #5 0x00007ffff7b09a7b in PyEval_EvalFrameEx () from
> /usr/lib64/libpython2.7.so.1.0
> #6 0x00007ffff7b0b658 in PyEval_EvalCodeEx () from
> /usr/lib64/libpython2.7.so.1.0
> #7 0x00007ffff7b09bc7 in PyEval_EvalFrameEx () from
> /usr/lib64/libpython2.7.so.1.0
> #8 0x00007ffff7b0b658 in PyEval_EvalCodeEx () from
> /usr/lib64/libpython2.7.so.1.0
> #9 0x00007ffff7b09bc7 in PyEval_EvalFrameEx () from
> /usr/lib64/libpython2.7.so.1.0
> #10 0x00007ffff7b0b658 in PyEval_EvalCodeEx () from
> /usr/lib64/libpython2.7.so.1.0
> #11 0x00007ffff7b09bc7 in PyEval_EvalFrameEx () from
> /usr/lib64/libpython2.7.so.1.0
> #12 0x00007ffff7b0b658 in PyEval_EvalCodeEx () from
> /usr/lib64/libpython2.7.so.1.0
> #13 0x00007ffff7b09bc7 in PyEval_EvalFrameEx () from
> /usr/lib64/libpython2.7.so.1.0
> #14 0x00007ffff7b0b658 in PyEval_EvalCodeEx () from
> /usr/lib64/libpython2.7.so.1.0
> #15 0x00007ffff7b0b762 in PyEval_EvalCode () from
> /usr/lib64/libpython2.7.so.1.0
> #16 0x00007ffff7b2545c in ?? () from /usr/lib64/libpython2.7.so.1.0
> #17 0x00007ffff7b25530 in PyRun_FileExFlags () from
> /usr/lib64/libpython2.7.so.1.0
> #18 0x00007ffff7b26a1f in PyRun_SimpleFileExFlags () from
> /usr/lib64/libpython2.7.so.1.0
> #19 0x00007ffff7b377cc in Py_Main () from /usr/lib64/libpython2.7.so.1.0
> #20 0x00007ffff74d4bad in __libc_start_main () from /lib64/libc.so.6
> #21 0x00000000004008c9 in _start ()
>
> I have python 2.7.1 and amd64 linux distributive (gentoo). I did not
> see this problem on x86 linux.
> Thanks.
>
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--
Michael Droettboom
Science Software Branch
Space Telescope Science Institute
Baltimore, Maryland, USA
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