Matplotlib/Pylab Error

subhabangalore at gmail.com subhabangalore at gmail.com
Wed Dec 12 04:23:28 CET 2012


On Tuesday, December 11, 2012 2:10:07 AM UTC+5:30, subhaba... 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.
> 
> 
> 
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> 
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> 
>     makes to its subprocess using this computer's internal loopback
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> 
>     ****************************************************************
> 
>     
> 
> IDLE 2.6.1      
> 
> >>> import networkx as nx
> 
> >>> G=nx.Graph()
> 
> >>> G.add_node(1)
> 
> >>> G.add_nodes_from([2,3])
> 
> >>> H=nx.path_graph(10)
> 
> >>> G.add_nodes_from(H)
> 
> >>> G.add_node(H)
> 
> >>> G.add_edge(1,2)
> 
> >>> G.draw()
> 
> 
> 
> Traceback (most recent call last):
> 
>   File "<pyshell#8>", line 1, in <module>
> 
>     G.draw()
> 
> AttributeError: 'Graph' object has no attribute 'draw'
> 
> >>> import matplotlib.pyplot as plt
> 
> >>> plt.show()
> 
> >>> nx.draw(G)
> 
> >>> plt.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\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
> 
> 
> 
> Regards,
> 
> Subhabrata.

I think the problem is with the OS. In my home machine(with MS-Windows 7) it is running fine, but in the office machine(with MS-Windows XP SP2) it is giving error. I tried to have a word with my System Admin friend he is bit unaware about the Python environment, and I have a pressing need to solve. I restarted the machine but did not help. 

Regards,
Subhabrata.



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