hist doesn't like 2d arrays

Dear Folks,

I'm finding that hist has problems computing on 2d arrays.

    import numpy
    import pylab
    mu, sigma = 2, 0.5
    v = numpy.random.normal(mu,sigma,160000)
    pylab.hist(v, bins=1000, normed=1)

This works without any problems. But if you try this:

    pylab.hist(w, bins=1000, normed=1)

it doesn't come back on my machine until all of memory is used up. However:

    n,bins = numpy.histogram(w,bins=1000,normed=1)

works just fine.