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-   -   Matplotlib/Pylab Error (http://www.velocityreviews.com/forums/t955325-matplotlib-pylab-error.html)

subhabangalore@gmail.com 12-10-2012 08:40 PM

Matplotlib/Pylab Error
 
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.

************************************************** **************
Personal firewall software may warn about the connection IDLE
makes to its subprocess using this computer's internal loopback
interface. This connection is not visible on any external
interface and no data is sent to or received from the Internet.
************************************************** **************

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.

Oscar Benjamin 12-12-2012 12:10 AM

Re: Matplotlib/Pylab Error
 
On 10 December 2012 20:40, <subhabangalore@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

subhabangalore@gmail.com 12-12-2012 03:23 AM

Re: Matplotlib/Pylab Error
 
On Tuesday, December 11, 2012 2:10:07 AM UTC+5:30, subhaba...@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 addressthem.
>
>
>
> 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, indraw
>
> 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.
>
>
>
> ************************************************** **************
>
> Personal firewall software may warn about the connection IDLE
>
> makes to its subprocess using this computer's internal loopback
>
> interface. This connection is not visible on any external
>
> interface and no data is sent to or received from the Internet.
>
> ************************************************** **************
>
>
>
> 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, indraw
>
> 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.

Mark Lawrence 12-12-2012 03:35 AM

Re: Matplotlib/Pylab Error
 
On 10/12/2012 20:40, subhabangalore@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 think you'd get more responses if you post your questions on the
matplotlib users mailing list.

--
Cheers.

Mark Lawrence.



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