On Fri, May 24, 2019 at 9:33 PM C W <tmrsg11@gmail.com> wrote:
Thank you, Robert. I will take it up to the Pandas-dev mailing list.
I'm not sure if I follow you on "right semantics for the shape of the output." Range is just a summary statistic which is a number.
I'm not an expert, but wouldn't something like this do? def range(vec): return np.max(vec) - np.min(vec)
Oh.You referenced the R range() function, which returns the minimum and the maximum as separate numbers, not their difference. https://www.rdocumentation.org/packages/base/versions/3.6.0/topics/range And the pandas issue that you referenced was asking for the same. In fact, numpy does have the function you are looking for, as Juan noted. It's called `ptp()` (early numpy developers tended to be more from a signal processing background than a statistics background). -- Robert Kern