Problems with quiver?

I am trying out quiver using IPython (which I am new to so my apologies
if this is actually a IPython question) and matplotlib .80 and the
latest numeric. The code I try and the subsequent error:

In [1]: x=ones([5,5])

In [2]: quiver(x,x)

···

exceptions.TypeError
Traceback (most recent call last)

C:\Documents and Settings\root\Desktop<console>

C:\Python24\Lib\site-packages\matplotlib\pylab.py in quiver(*args, **kwargs)
2137 hold(h)
2138 try:
-> 2139 ret = gca().quiver(*args, **kwargs)
2140 draw_if_interactive()
2141 except:

C:\Python24\Lib\site-packages\matplotlib\axes.py in quiver(self, U, V, *args, **kwargs)
852 if do_scale:

853
Nmax = maximum.reduce(maximum.reduce(N))
–> 854 U *= (S/Nmax)
855 V *= (S/Nmax)
856 N /= Nmax

TypeError: return array has incorrect type

What could be the issue? Thanks for the help.
-Chris

Chris Neff wrote:

I am trying out quiver using IPython (which I am new to so my apologies if this is actually a IPython question) and matplotlib .80 and the latest numeric. The code I try and the subsequent error:

In [1]: x=ones([5,5])

In [2]: quiver(x,x)
---------------------------------------------------------------------------
exceptions.TypeError Traceback (most recent call last)

C:\Documents and Settings\root\Desktop\<console>

C:\Python24\Lib\site-packages\matplotlib\pylab.py in quiver(*args, **kwargs)
   2137 hold(h)
   2138 try:
-> 2139 ret = gca().quiver(*args, **kwargs)
   2140 draw_if_interactive()
   2141 except:

C:\Python24\Lib\site-packages\matplotlib\axes.py in quiver(self, U, V, *args, **kwargs)
    852 if do_scale:
    853 Nmax = maximum.reduce(maximum.reduce(N))
--> 854 U *= (S/Nmax)
    855 V *= (S/Nmax)
    856 N /= Nmax

TypeError: return array has incorrect type

What could be the issue? Thanks for the help.

Pass in floating point arrays rather than integer arrays.

quiver, on the whole, isn't terribly robust. I've been contemplating writing a replacement. quiver-users: how attached are you to this API? Personally, it fills me with a burning rage every time I think about it.

···

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Robert Kern
rkern@...376...

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
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