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

[John H. <jdh...@ac...>]

>>>>> "Humufr" == Humufr  <hu...@ya...> writes:

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


Thanks for the report.  Replace line 894 in axes.py

OLD:
        if C:

NEW
        if C is not None:


JDH