I have noticed some that the 1d histogram and 2d histogram. The

histogram function bins everything between the elements of edges, and then includes everything greater than the last edge element in the last bin. The histrogram2d function only bins in the range specified by edges. Is there a reason these two functions do not operate in the same way?

Hi Mikolai, The reason is that I didn't like the way histogram handled outliers so I wrote histogram1d, histogram2d, and histogramdd to handle 1d, 2d and nd data series. I submitted those functions and only histogram2d got included in numpy, hence the clash. Travis suggested that histogram1d and histogramdd could go into scipy, but with the new compatibility paradigm, I suggest that the old histogram is moved into the compatibility module and histogram1d is renamed to histogram and put into the main namespace. histogramdd could indeed go into scipy.stats. I'll submit a new patch if there is some interest. The new function takes an axis argument so you can make an histogram out of a nd array rowwise or columnwise. Ouliers are not counted, and the bin array has length (nbin +1) (+1 for the right hand side edge). The new function will break some code relying on the old behavior, so its inclusion presupposes the agreement of the users. You can find the code at ticket 189<http://projects.scipy.org/scipy/numpy/ticket/189> . David