Re: [Matplotlib-users] Using object oriented interface in interactive mode?

[Nikolaus R. <Nik...@ra...>]

Benjamin Root <ben...@pu...> writes:
> On Sunday, August 5, 2012, Nikolaus Rath wrote:
>
>> Hello,
>>
>> The following code shows the plot right away as expected:
>>
>> # python
>> Python 2.7.3rc2 (default, Apr 22 2012, 22:30:17)
>> [GCC 4.6.3] on linux2
>> Type "help", "copyright", "credits" or "license" for more information.
>> >>> import matplotlib
>> >>> matplotlib.__version__
>> '1.1.1rc2'
>> >>> import matplotlib.pyplot as plt
>> >>> plt.interactive(True)
>> >>> plt.plot(range(10))
>> [<matplotlib.lines.Line2D object at 0x2ce7790>]
>>
>>
>> This, however, opens a window but the graph never shows up:
>>
>> # python
>> Python 2.7.3rc2 (default, Apr 22 2012, 22:30:17)
>> [GCC 4.6.3] on linux2
>> Type "help", "copyright", "credits" or "license" for more information.
>> >>> import matplotlib.pyplot as plt
>> >>> plt.interactive(True)
>> >>> fig = plt.figure()
>> >>> ax = fig.add_subplot(1,1,1)
>> >>> ax.plot(range(10))
>> [<matplotlib.lines.Line2D object at 0x3055d90>]
>> >>>
>>
>> Does interactive mode only apply to the plot commands in pyplot?
>>
>> Is there a method I can call in this case to "refresh" the window and
>> show the plot?
>>
>> For seem reason, calling plt.axes() has the desired effect, but this is
>> probably a side effect that I really should not rely on, right?
>
> Correct, I think you want plt.draw().

Thanks, that works! But why is it necessary? Does interactive mode only
apply to direct pyplot.* commands?


Thanks,

   -Nikolaus

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