On Thu, Jun 30, 2022, at 22:23, Ewout ter Hoeven wrote: > A function to get the minimum and maximum values of an array > simultaneously could be very useful, from both a convenience and > performance point of view. Especially when arrays get larger the > performance benefit could be significant, and even more if the array > doesn't fit in L2/L3 cache or even memory.
Hi, There's an open issue asking for this feature: https://github.com/numpy/numpy/issues/9836 András > > There are many cases where not either the minimum or the maximum of an > array is required, but both. Think of clipping an array, getting it's > range, checking for outliers, normalizing, making a plot like a > histogram, etc. > > This function could be called aminmax() for example, and also be called > like ndarray.minmax(). It should return a tuple (min, max) with the > minimum and maximum values of the array, identical to calling > (ndarray.min(), ndarray.max()). > > With such a function, numpy.ptp() and the special cases of > numpy.quantile(a, q=[0,1]) and numpy.percentile(a, q=[0,100]) could > also potentially be speeded up, among others. > > Potentially argmin and argmax could get the same treatment, being > called argminmax(). > > There is also a very extensive post on Stack Overflow (a bit old > already) with discussion and benchmarks: > https://stackoverflow.com/questions/12200580/numpy-function-for-simultaneous-max-and-min > _______________________________________________ > NumPy-Discussion mailing list -- numpy-discussion@python.org > To unsubscribe send an email to numpy-discussion-le...@python.org > https://mail.python.org/mailman3/lists/numpy-discussion.python.org/ > Member address: deak.and...@gmail.com _______________________________________________ NumPy-Discussion mailing list -- numpy-discussion@python.org To unsubscribe send an email to numpy-discussion-le...@python.org https://mail.python.org/mailman3/lists/numpy-discussion.python.org/ Member address: arch...@mail-archive.com
