Matplotlib/Pylab Error
Oscar Benjamin
oscar.j.benjamin at gmail.com
Tue Dec 11 19:10:33 EST 2012
On 10 December 2012 20:40, <subhabangalore at gmail.com> wrote:
> Dear Group,
>
> I am trying to enumerate few interesting errors on pylab/matplotlib.
> If any of the learned members can kindly let me know how should I address them.
>
> I am trying to enumerate them as follows.
>
> i) >>> import numpy
>>>> import pylab
>>>> t = numpy.arange(0.0, 1.0+0.01, 0.01)
>>>> s = numpy.cos(2*2*numpy.pi*t)
>>>> pylab.plot(t, s)
> [<matplotlib.lines.Line2D object at 0x021122D0>]
>>>> pylab.show()
> Exception in Tkinter callback
> Traceback (most recent call last):
> File "C:\Python26\lib\lib-tk\Tkinter.py", line 1410, in __call__
> return self.func(*args)
> File "C:\Python26\Lib\site-packages\matplotlib\backends\backend_tkagg.py", line 236, in resize
> self.show()
> File "C:\Python26\Lib\site-packages\matplotlib\backends\backend_tkagg.py", line 239, in draw
> FigureCanvasAgg.draw(self)
> File "C:\Python26\Lib\site-packages\matplotlib\backends\backend_agg.py", line 421, in draw
> self.figure.draw(self.renderer)
> File "C:\Python26\Lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
> draw(artist, renderer, *args, **kwargs)
> File "C:\Python26\Lib\site-packages\matplotlib\figure.py", line 898, in draw
> func(*args)
> File "C:\Python26\Lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
> draw(artist, renderer, *args, **kwargs)
> File "C:\Python26\Lib\site-packages\matplotlib\axes.py", line 1997, in draw
> a.draw(renderer)
> File "C:\Python26\Lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
> draw(artist, renderer, *args, **kwargs)
> File "C:\Python26\Lib\site-packages\matplotlib\axis.py", line 1045, in draw
> tick.draw(renderer)
> File "C:\Python26\Lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
> draw(artist, renderer, *args, **kwargs)
> File "C:\Python26\Lib\site-packages\matplotlib\axis.py", line 239, in draw
> self.label1.draw(renderer)
> File "C:\Python26\Lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
> draw(artist, renderer, *args, **kwargs)
> File "C:\Python26\Lib\site-packages\matplotlib\text.py", line 591, in draw
> ismath=ismath)
> File "C:\Python26\Lib\site-packages\matplotlib\backends\backend_agg.py", line 167, in draw_text
> font.draw_glyphs_to_bitmap(antialiased=rcParams['text.antialiased'])
> TypeError: draw_glyphs_to_bitmap() takes no keyword arguments
>
> ii) Python 2.6.1 (r261:67517, Dec 4 2008, 16:51:00) [MSC v.1500 32 bit (Intel)] on win32
> Type "copyright", "credits" or "license()" for more information.
>
The example above works for me just fine (in ipython):
In [1]: import pylab
In [2]: import numpy
In [3]: t = numpy.arange(0.0, 1.0+0.01, 0.01)
In [4]: s = numpy.cos(2*2*numpy.pi*t)
In [5]: pylab.plot(t, s)
Out[5]: [<matplotlib.lines.Line2D at 0x3c36310>]
In [6]: pylab.show() # At this point a plot of cos(t) appears as expected
Have you customised your matplotlibrc file? I have no problems with the above,
>
> IDLE 2.6.1
>>>> import networkx as nx
Sorry, I don't have this module installed.
Oscar
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