When I try to turn on the grid for just one axis, seemingly in perfect 
accordance with the documentation at 
http://matplotlib.sourceforge.net/api/axes_api.html#matplotlib.axes.Axes.grid

it seems like there is a problem.  I am able to make a graph, but trying to 
turn on the grid for just one axis causes an error.

My commands are pasted below.

Am I doing this wrong?  I am doing the best I can to follow the documentation 
exactly.

Thanks for any help!


import matplotlib
matplotlib.use('MacOSX')
import matplotlib.pyplot as plt
fig=plt.figure()
ax=fig.add_subplot(111)
ax.plot([1,2,3])
ax.set_xlabel('Hi there')
ax.grid(True, axis='x')


bombayduck:~$ python
Python 2.6.5 (r265:79359, Mar 24 2010, 01:32:55) 
[GCC 4.0.1 (Apple Inc. build 5493)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import matplotlib
>>> matplotlib.use('MacOSX')
>>> import matplotlib.pyplot as plt
>>> fig=plt.figure()
>>> ax=fig.add_subplot(111)
>>> ax.plot([1,2,3])
[<matplotlib.lines.Line2D object at 0x1a27e30>]
>>> ax.set_xlabel('Hi there')
<matplotlib.text.Text object at 0x1a58030>
>>> ax.grid(True, axis='x')
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File 
"/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/matplotlib/axes.py",
 line 1823, in grid
   self.xaxis.grid(b, **kwargs)
 File 
"/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/matplotlib/axis.py",
 line 965, in grid
   if len(kwargs): artist.setp(tick.gridline,**kwargs)
 File 
"/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/matplotlib/artist.py",
 line 1169, in setp
   func = getattr(o,funcName)
AttributeError: 'Line2D' object has no attribute 'set_axis'

-dave----------------------------------------------------------------------
A neuroscientist is at the video arcade, when someone makes him a $1000 bet
on Pac-Man. He smiles, gets out his screwdriver and takes apart the Pac-Man
game. Everyone says "What are you doing?" The neuroscientist says "Well,
since we all know that Pac-Man is based on electric signals traveling
through these circuits, obviously I can understand it better than the other
guy by going straight to the source!"


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