In fact, the documentation mentions that their operators are tested to match those of R https://www.gnu.org/software/datamash/manual/datamash.html#Statistical-O

In fact, the documentation mentions that their operators are tested to match those of R https://www.gnu.org/software/datamash/manual/datamash.html#Statistical-Operations https://www.gnu.org/software/datamash/manual/datamash.html#S... which looks like a pretty neat idea.