On 06/13/2010 07:39 AM, Daniel Welling wrote:
> Something that I have noticed:
> When using TkAgg (python 2.5, OSX/ppc, mpl 99.0), isinteractive()
> switches from False to True after the first call to show() (see below).
> When I switch back ends, e.g. to Qt4, this change does not happen until
> I do it myself through ion(). This was reproduceable on my intel mac,
> but since updating to 99.1.1 (from source rather than Fink), I've broken
> the Tk backend. Hope this helps; it may be a naive observation.
Not naive at all--this is one of the odd, and I think very undesirable,
aspects of present TkAgg show() behavior. It is eliminated by my
proposed change.
Eric
>
> In [2]: import matplotlib as mpl
>
> In [3]: mpl.use('TkAgg')
>
> In [4]: import pylab as plt
>
> In [5]: plt.isinteractive()
> Out[5]: False
>
> In [6]: plt.plot([0,1])
> Out[6]: [<matplotlib.lines.Line2D object at 0x1dee1f0>]
>
> In [7]: plt.show()
>
> In [8]: plt.isinteractive()
> Out[8]: True
>
>
> On Sun, Jun 13, 2010 at 9:36 AM, Michiel de Hoon <mjldeh...@yahoo.com
> <mailto:mjldeh...@yahoo.com>> wrote:
>
> --- On Fri, 6/11/10, Eric Firing <efir...@hawaii.edu
> <mailto:efir...@hawaii.edu>> wrote:
> > I agree that the difference in blocking behavior is still a
> > problem. I think that what we should do for now, *if* multiple
> > calls to show work on the Mac (which I can't easily test), is
> > change the documentation to correspond to the present situation,
> > highlighting the real problem of different blocking behavior.
>
> I now tried the remaining backends on Mac OS X. With the Qt4Agg and
> WxAgg backends, show() can be called repeatedly and blocks each
> time. The FltkAgg backend shows the same behavior as Tkagg. The
> implementation of show() in the FltkAgg backend uses the same
> _needmain as TkAgg. If I remove the _needmain stuff, then show() can
> be called multiple times with FltkAgg, blocking each time.
>
> --Michiel.
>
>
>
>
>
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