New question #643666 on Yade:
https://answers.launchpad.net/yade/+question/643666
I installed yade 2016.06a using 2016.06a-4 apt package (ubuntu 16.04). Perhaps
there is a problem with qt support. Should I recompile by hand?
Symptoms:
1) If I launch yade and immediately press F8 I get
Yade [1]: import yade.plot; yade.plot.plot();
---------------------------------------------------------------------------
IndexError Traceback (most recent call last)
/usr/bin/yade in <module>()
----> 1 import yade.plot; yade.plot.plot();
/usr/lib/x86_64-linux-gnu/yade/py/yade/plot.py in plot(noShow, subPlots)
593 global currLineRefs
594 figs=set([l.line.axes.get_figure() for l in currLineRefs])
--> 595 if not hasattr(list(figs)[0],'show') and not noShow:
596 import warnings
597 warnings.warn('plot.plot not showing figure (matplotlib
using headless backend?)')
IndexError: list index out of range
--------------------------------------------------------------------
2) If I launch yade and paste (line by line) the example in
https://github.com/yade/trunk/blob/master/examples/simple-scene/simple-scene-plot.py
as soon as I press return on the line
plot.plot(subPlots=False)
I get
Yade [18]: plot.plot(subPlots=False)
QObject::connect: Cannot connect NavigationToolbar2QT::message(QString) to
(null)::_show_message()
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/usr/bin/yade in <module>()
----> 1 plot.plot(subPlots=False)
/usr/lib/x86_64-linux-gnu/yade/py/yade/plot.py in plot(noShow, subPlots)
590 .. note:: For backwards compatibility reasons, *noShow* option
will return list of figures for multiple figures but a single figure (rather
than list with 1 element) if there is only 1 figure.
591 """
--> 592 createPlots(subPlots=subPlots)
593 global currLineRefs
594 figs=set([l.line.axes.get_figure() for l in currLineRefs])
/usr/lib/x86_64-linux-gnu/yade/py/yade/plot.py in createPlots(subPlots,
scatterSize, wider)
378 for nPlot,p in enumerate(plots.keys()):
379 pStrip=p.strip().split('=',1)[0]
--> 380 if not subPlots: pylab.figure()
381 else: pylab.subplot(subRows,subCols,nPlot+1)
382 if plots[p]==None: # image plot
/usr/lib/python2.7/dist-packages/matplotlib/pyplot.pyc in figure(num, figsize,
dpi, facecolor, edgecolor, frameon, FigureClass, **kwargs)
525 frameon=frameon,
526 FigureClass=FigureClass,
--> 527 **kwargs)
528
529 if figLabel:
/usr/lib/python2.7/dist-packages/matplotlib/backends/backend_qt5agg.pyc in
new_figure_manager(num, *args, **kwargs)
41 FigureClass = kwargs.pop('FigureClass', Figure)
42 thisFig = FigureClass(*args, **kwargs)
---> 43 return new_figure_manager_given_figure(num, thisFig)
44
45
/usr/lib/python2.7/dist-packages/matplotlib/backends/backend_qt5agg.pyc in
new_figure_manager_given_figure(num, figure)
49 """
50 canvas = FigureCanvasQTAgg(figure)
---> 51 return FigureManagerQT(canvas, num)
52
53
/usr/lib/python2.7/dist-packages/matplotlib/backends/backend_qt5.pyc in
__init__(self, canvas, num)
463 if self.toolbar is not None:
464 self.window.addToolBar(self.toolbar)
--> 465 self.toolbar.message.connect(self._show_message)
466 tbs_height = self.toolbar.sizeHint().height()
467 else:
TypeError: connect() failed between NavigationToolbar2QT.message[str] and
_show_message()
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