[Matplotlib-users] a little problem with quiver function and numarray

[Humufr <hu...@ya...>]

I obtain an error message when I tried to use the quiver sample:

Traceback (most recent call last):
  File "quiver_demo.py", line 8, in ?
    quiver( X, Y, U, V, 0.2, color=True )
  File "/usr/local/lib/python2.4/site-packages/matplotlib/pylab.py", 
line 2105, in quiver
    ret =  gca().quiver(*args, **kwargs)
  File "/usr/local/lib/python2.4/site-packages/matplotlib/axes.py", line 
894, in quiver
    if C:
  File "/usr/local/lib/python2.4/site-packages/numarray/generic.py", 
line 490, in __nonzero__
    raise RuntimeError("An array doesn't make sense as a truth value.  
Use any(a) or all(a).")
RuntimeError: An array doesn't make sense as a truth value.  Use any(a) 
or all(a).

with:

cvs status lib/matplotlib/axes.py
===================================================================
File: axes.py           Status: Up-to-date

   Working revision:    1.86
   Repository revision: 1.86    
/cvsroot/matplotlib/matplotlib/lib/matplotlib/axes.py,v


and numarray 1.2.3


    N.