a little problem with quiver function and numarray

Community matplotlib-users
1

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).

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

OLD:
        if C:

NEW
        if C is not None:

JDH