[Matplotlib-users] mixed_subplots_demo.py

[Patton Bradford]

Trying to get the referenced example from the mplot3d example web page working 
with Python 2.6.1 on Windows XP.  Naturally, the line:
 
ax = fig.add_subplot(2, 1, 2, projection='3d')
 
fails since '3d' is not a recognized projection.  Now, if I want to just plot 
the 3d, the solution that works seems to be:
fig = plt.figure()
ax = Axes3D(fig)
snip
surf = ax.plot_surface(snip)
 
However, I can't seem to find a way to create the one figure, add the 2D 
subplot and then the 3D subplot.
 
Any suggestions?
 
Thanks in advance.

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[Matplotlib-users] plot_wireframe

[Patton Bradford]

Just trying to get familiar with mplot3d's functions, and I've run into a 
problem with plot_wireframe that I'm having problems running down (or 
duplicating, for that matter).  I'm trying to generate plots of some wavelet 
functions, so I need to plot values against time and scale.  I've generated 
three numpy arrays: X (time), Y (scale) (generated these using meshgrid), and Z 
(values, a rather sparse matrix).  I verified that all of these are the same 
shape (7x100) by fetching the 'shape' attribute from X,Y,Z.   However, when I 
call plot_wireframe(), I get this error:
 
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 212, in resize
    self.show()
  File C:\Python26\lib\site-packages\matplotlib\backends\backend_tkagg.py, 
line 215, in draw
    FigureCanvasAgg.draw(self)
  File C:\Python26\lib\site-packages\matplotlib\backends\backend_agg.py, line 
314, in draw
    self.figure.draw(self.renderer)
  File C:\Python26\Lib\site-packages\matplotlib\artist.py, line 46, in 
draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File C:\Python26\lib\site-packages\matplotlib\figure.py, line 773, in draw
    for a in self.axes: a.draw(renderer)
  File C:\Python26\lib\site-packages\mpl_toolkits\mplot3d\axes3d.py, line 
135, in draw
    for col in self.collections]
  File C:\Python26\Lib\site-packages\mpl_toolkits\mplot3d\art3d.py, line 163, 
in do_3d_projection
    self._segments3d]
  File C:\Python26\lib\site-packages\mpl_toolkits\mplot3d\proj3d.py, line 
211, in proj_trans_points
    return proj_transform(xs, ys, zs, M)
  File C:\Python26\lib\site-packages\mpl_toolkits\mplot3d\proj3d.py, line 
193, in proj_transform
    vec = vec_pad_ones(xs, ys, zs)
  File C:\Python26\lib\site-packages\mpl_toolkits\mplot3d\proj3d.py, line 
184, in vec_pad_ones
    vec = np.array([xs,ys,zs,np.ones((len(xs)))])
ValueError: setting an array element with a sequence.
 
Any suggestions as to what the problem might be?  As I said, I'm having 
problems duplicating it in toy programs.
 
Thanks in advance.
 
/s/
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