>>>>> "Simson" == Simson Garfinkel <[EMAIL PROTECTED]> writes:
Simson> That's odd. I would think that it makes more sense to set
Simson> the format *before* the data is plot, not after.
When normed is True, hist returns a probability density so that the
integral of the histogram equals one, assuming equally spaced bins.
See
http://en.wikipedia.org/wiki/Probability_density_function
You should be able to verify this with
# trapezoidal integration of the probability density function
from matplotlib.mlab import trapz
pdf, bins, patches = ax.hist(...)
print trapz(bins, pdf)
JDH
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