I am getting an error from the 'hist' function.  It occurs when running 
the 'histogram_demo.py' example from http://matplotlib.sourceforge.net/. 
  I'm using matplotlib version 0.87.4 and Numeric 24.2.  Has anyone had 
this problem?  Thanks.

Steve

# histogram_demo.py
 >>> from pylab import *
 >>>
 >>> mu, sigma = 100, 15
 >>> x = mu + sigma*randn(10000)
 >>>
 >>> # the histogram of the data
... n, bins, patches = hist(x, 50, normed=1)
Traceback (most recent call last):
   File "<stdin>", line 2, in ?
   File "/usr/lib/python2.4/site-packages/matplotlib/pylab.py", line 
1851, in hist
     ret =  gca().hist(*args, **kwargs)
   File "/usr/lib/python2.4/site-packages/matplotlib/axes.py", line 
4078, in hist
     patches = self.bar(bins, n, width=width, bottom=bottom, align=align)
   File "/usr/lib/python2.4/site-packages/matplotlib/axes.py", line 
2481, in bar
     yerr = asarray([yerr]*nbars, Float) # Float converts Nones to NANs
   File "/usr/lib/python2.4/site-packages/Numeric/Numeric.py", line 134, 
in asarray
     return multiarray.array(a, typecode, copy=0, savespace=savespace)
TypeError: a float is required

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