Mike Day's response points out why. Thanks,
-- Raul On Sun, Feb 12, 2017 at 9:29 AM, Louis de Forcrand <[email protected]> wrote: > The two statements are not equivalent, but seem to produce the same result. I > will see if I can find out why. > > Louis > >> On 12 Feb 2017, at 14:11, Lippu Esa <[email protected]> wrote: >> >> Ok, thanks! I got it now. >> >> Esa >> >> >> >> -------- Original message -------- >> From: 'Mike Day' via Programming <[email protected]> >> Date: 2/12/17 13:01 (GMT+02:00) >> To: [email protected] >> Subject: Re: [Jprogramming] Hooked again >> >> It looks to me as if the two left hooks form one big left hook, >> not that I'm into boxing: >> >> mn =: -"1 mean >> mp1=: mp~|: >> >> ((mp1 mn)%#)data NB. big "hook" >> 504 360 180 >> 360 360 0 >> 180 0 720 >> >> ((mp1 @: mn)%#)data NB. mp1 after mn using @: >> 504 360 180 >> 360 360 0 >> 180 0 720 >> >> (([: mp1 mn)%#)data NB. mp1 after mn using [: >> 504 360 180 >> 360 360 0 >> 180 0 720 >> >> Any use? >> >> Mike >> >> >>> On 12/02/2017 08:06, Lippu Esa wrote: >>> ]data=. 5 3 $ 90 60 90 90 90 30 60 60 60 60 60 90 30 30 30 >>> >>> mean=: +/%# >>> mp=: +/ . * >>> covmat=: ((mp~|:)(-"1 mean))%# NB. divede by n not n-1 to comply with the >>> example >> >> >> --- >> This email has been checked for viruses by Avast antivirus software. >> https://www.avast.com/antivirus >> >> ---------------------------------------------------------------------- >> 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
