Hi Bjorn Thanks for the info. I am using each as my application is applying a verb to a list of boxes, each with different sized matrices. I can get around fill issues with the verb each.
Bob -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Björn Helgason Sent: April 26, 2010 11:16 AM To: Programming forum Subject: Re: [Jprogramming] Each and # When you are working with rank you can investigate it by using b. # b. 0 _ 1 _ You can change the rank as you do #"2 b. 0 2 2 2 As you see you then get three numbers and the first is for the monadic case and then for left and right argument so the first number means nothing when you apply it dyadically. I am not sure why you want to use each when it is enough to use > 1 2 3 4 #"0 1 2 > <x 0 1 2 3 4 5 6 7 8 9 10 11 6 7 8 9 10 11 12 13 14 15 16 17 12 13 14 15 16 17 12 13 14 15 16 17 18 19 20 21 22 23 18 19 20 21 22 23 18 19 20 21 22 23 18 19 20 21 22 23 2010/4/26 Robert O'Boyle <[email protected]>: > Ah! Thanks. This explains it. Much appreciated > > Bob > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Henry Rich > Sent: April 26, 2010 8:52 AM > To: Programming forum > Subject: Re: [Jprogramming] Each and # > > You want the entire 1 2 3 4 to be the left operand, but &.> (each) > doesn't do that, because it is rank 0. So it 'unboxes' (i. e. passes > through) the atoms of 1 2 3 4 individually, giving the result you see. > > Some ways that work: > > (<1 2 3 4) # each <x > > 1 2 3 4&# each <x > > 1 2 3 4 <@(#>)"_ 0 <x > > Henry Rich > > Robert O'Boyle wrote: >> Hi >> >> >> >> I have a matrix, x, which is boxed >> >> >> >> x=. i. 4 6 >> >> <x >> >> ------------------┐ >> >> │ 0 1 2 3 4 5│ >> >> │ 6 7 8 9 10 11│ >> >> │12 13 14 15 16 17│ >> >> │18 19 20 21 22 23│ >> >> L------------------ >> >> I want to copy each row of x. Using #, I can do this on the unboxed x > matrix >> >> >> >> 1 2 3 4 #"2 x >> >> >> >> 0 1 2 3 4 5 >> >> 6 7 8 9 10 11 >> >> 6 7 8 9 10 11 >> >> 12 13 14 15 16 17 >> >> 12 13 14 15 16 17 >> >> 12 13 14 15 16 17 >> >> 18 19 20 21 22 23 >> >> 18 19 20 21 22 23 >> >> 18 19 20 21 22 23 >> >> 18 19 20 21 22 23 >> >> >> >> But I get an unexpected result when I use the verb 'each'. >> >> >> >> 1 2 3 4 #"2 each <x >> >> ------------------T-----------------T-----------------T-----------------┐ >> >> │ 0 1 2 3 4 5│ 0 1 2 3 4 5│ 0 1 2 3 4 5│ 0 1 2 3 4 5│ >> >> │ 6 7 8 9 10 11│ 0 1 2 3 4 5│ 0 1 2 3 4 5│ 0 1 2 3 4 5│ >> >> │12 13 14 15 16 17│ 6 7 8 9 10 11│ 0 1 2 3 4 5│ 0 1 2 3 4 5│ >> >> │18 19 20 21 22 23│ 6 7 8 9 10 11│ 6 7 8 9 10 11│ 0 1 2 3 4 5│ >> >> │ │12 13 14 15 16 17│ 6 7 8 9 10 11│ 6 7 8 9 10 11│ >> >> │ │12 13 14 15 16 17│ 6 7 8 9 10 11│ 6 7 8 9 10 11│ >> >> │ │18 19 20 21 22 23│12 13 14 15 16 17│ 6 7 8 9 10 11│ >> >> │ │18 19 20 21 22 23│12 13 14 15 16 17│ 6 7 8 9 10 11│ >> >> │ │ │12 13 14 15 16 17│12 13 14 15 16 17│ >> >> │ │ │18 19 20 21 22 23│12 13 14 15 16 17│ >> >> │ │ │18 19 20 21 22 23│12 13 14 15 16 17│ >> >> │ │ │18 19 20 21 22 23│12 13 14 15 16 17│ >> >> │ │ │ │18 19 20 21 22 23│ >> >> │ │ │ │18 19 20 21 22 23│ >> >> │ │ │ │18 19 20 21 22 23│ >> >> │ │ │ │18 19 20 21 22 23│ >> >> L-----------------+-----------------+-----------------+------------------ >> >> >> >> Any assistance on this would be appreciated. >> >> >> >> Bob >> >> >> >> >> >> >> >> ---------------------------------------------------------------------- >> 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 -- Björn Helgason, Verkfræðingur Fornustekkum II 781 Hornafirði, t-póst: [email protected] gsm: +3546985532 sími: +3544781286 http://groups.google.com/group/J-Programming Tæknikunnátta höndlar hið flókna, sköpunargáfa er meistari einfaldleikans góður kennari getur stigið á tær án þess að glansinn fari af skónum /|_ .-----------------------------------. ,' .\ / | Með léttri lund verður | ,--' _,' | Dagurinn í dag | / / | Enn betri en gærdagurinn | ( -. | `-----------------------------------' | ) | (\_ _/) (`-. '--.) (='.'=) ♖♘♗♕♔♙ `. )----' (")_(") ☃☠ ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
