Re: [Gretl-devel] imaxc/imaxr

Am 21.04.2015 um 13:25 schrieb Riccardo (Jack) Lucchetti: > > Folks, consider this: > > <hansl> > x = imaxr({1,2,1,2,1,2}) > </hansl> > > At present, this returns the scalar 2, but I wonder if it shouldn't > instead return a row vector holding {2,4,6}. But then, generalisation to > the case when the argument to imaxr is a matrix with more than 1 row > becomes awkward. Thoughts? > A Jack-style answer might be: You could use <hansl> matrix m1 = {1,2,1,2,1,2} matrix check = selifc( seq(1, cols(m1)), (m1 .>= max(m1)) ) print check </hansl> to get the vector output, but I know that that's not the point of the question and you knew that already.

FWIW, (Python's) Numpy's argmax() and argmin() functions explicitly note that: "In case of multiple occurrences of the maximum values, the indices corresponding to the first occurrence are returned."