svn zoom

I just tried running with numerix set to

    > Numeric, and I'm repeatedly getting the following error:

    > File
    > "/usr/lib64/python2.4/site-packages/matplotlib/",
    > line 2502, in bar yerr = asarray([yerr]*nbars, Float) #
    > Float converts Nones to NANs File
    > "/usr/lib64/python2.4/site-packages/Numeric/",
    > line 134, in asarray return multiarray.array(a, typecode,
    > copy=0, savespace=savespace) TypeError: a float is
    > required driving

That was in histogram_demo which called bar with xerr=None and
yerr=None and bar was assuming a numpy-ism in converting None to nan.
I just committed a change to fix it.