Matplotlib: Histogram with bars inside grid lines...how??

[Enigma Curry]

Two things:

1) I now see where width is defined in the hist() documentation... I
was expecting it to be in the definition up at the top, but instead the
definition has **kwords.. not very helpful.

2) I noticed in my original historgram, that the y scale was not the
same as the x scale.. so I updated my code:

import pylab

pylab.grid()
x_values=[1,1,2,2,2,3,3,3,4,4,4,5,5,6,6,6]
pylab.hist(x_values,6)
pylab.yticks(pylab.arange(3))
pylab.axis('scaled')
pylab.show()


It produced this image:
http://enigmacurry.com/usenet/historgram-bars-not-in-grid-lines2.png

It has the same problem..