You could also use argminall=: 4 $. $.@(= <./@,)
However because neither take advantage of the special code (i. <. /), they don't have the same performance. On Fri, 27 Dec 2019, 14:42 Jimmy Gauvin, <jimmy.gau...@gmail.com> wrote: > Adding to Henry's idiom : > > argminall =: $ #: I.@(= <./)@, > argminall 3 3$5 > 0 0 > 0 1 > 0 2 > 1 0 > 1 1 > 1 2 > 2 0 > 2 1 > 2 2 > > > > On Thu, Dec 26, 2019 at 8:23 PM Arnab Chakraborty <damd...@gmail.com> > wrote: > > > wow! > > > > On Thu, 26 Dec 2019, 10:43 Henry Rich, <henryhr...@gmail.com> wrote: > > > > > argmin =: $ #: (i. <./)@, > > > > > > This is a standard APL idiom. > > > > > > Henry RIch > > > > > > On 12/26/2019 12:01 AM, Arnab Chakraborty wrote: > > > > Dear all, > > > > > > > > I want to find the position (i,j) of the min entry in a n by n > matrix. > > > > > > > > My current solution is > > > > > > > > ((=<./),mat )#"1 2,/(i.n),"0/i.n > > > > > > > > Is there a smarter method? > > > > > ---------------------------------------------------------------------- > > > > For information about J forums see > http://www.jsoftware.com/forums.htm > > > > > > ---------------------------------------------------------------------- > > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
