I am using them monadically. Linda
-----Original Message----- From: programming-boun...@forums.jsoftware.com [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of km Sent: Saturday, October 20, 2012 2:54 AM To: programm...@jsoftware.com Subject: Re: [Jprogramming] stitching matrices Identical? f =: =&{: g =: [:={: 1 4 f 2 3 4 1 1 4 g 2 3 4 |domain error: g | 1 4 g 2 3 4 Kip Murray Sent from my iPad On Oct 20, 2012, at 1:11 AM, "Linda Alvord" <lindaalv...@verizon.net> wrote: > Here's a problem that bothers me about this example before I leave it. > > > > First establish that =&{: and [:={: are identical and compare tree > and boxed versions: > > > > > > ]'A B'=:3|L:0(([:<i.)"1)3 5,:5 4 > > ----------T-------┐ > │0 1 2 0 1│0 1 2 0│ > │2 0 1 2 0│1 2 0 1│ > │1 2 0 1 2│2 0 1 2│ > │ │0 1 2 0│ > │ │1 2 0 1│ > L---------+-------- > > f=:=&{: > > g=:[:={: > > 5!:4 <'f' > > -- = > -- & -+- {: > > 5!:4 <'g' > > -- [: > --+- = > L- {: > > B > > 0 1 2 0 > 1 2 0 1 > 2 0 1 2 > 0 1 2 0 > 1 2 0 1 > > f B > > 1 0 0 1 > 0 1 0 0 > 0 0 1 0 > > g B > > 1 0 0 1 > 0 1 0 0 > 0 0 1 0 > > > > Now look at two "trees": > > > > elm=: 13 :'((=&{:)|.)"1 y' > > oak=: 13 :'(([:={:)|.)"1 y' > > 5!:4 <'elm' > > -- = > -- & -+- {: > ----+- |. > -- " -+- 1 > > 5!:4 <'oak' > > -- [: > -----+- = > ----+ L- {: > -- " -+ L- |. > L- 1 > > 5!:2 <'elm' > > --------------T-T-┐ > │---------T--┐│"│1│ > ││--T-T--┐│|.││ │ │ > │││=│&│{:││ ││ │ │ > ││L-+-+---│ ││ │ │ > │L--------+---│ │ │ > L-------------+-+-- > > 5!:2 <'oak' > > ---------------T-T-┐ > │----------T--┐│"│1│ > ││---T-T--┐│|.││ │ │ > │││[:│=│{:││ ││ │ │ > ││L--+-+---│ ││ │ │ > │L---------+---│ │ │ > L--------------+-+-- > > B > > 0 1 2 0 > 1 2 0 1 > 2 0 1 2 > 0 1 2 0 > 1 2 0 1 > > elm B > > 1 1 1 1 1 > > oak B > > ran with error: > |domain error: oak > | oak B > |[-16] c:\users\owner\j701-user\temp\42.ijs > > > > I'm not troubled by the fact that these results are different. I am > bothered that their differences do not appear in the tree and boxed > version, because I expect them both to be elm trees! > > > > If these versions don't show any differences shouldn't the results > agree. I think the tree versions must be missing some way to tell them apart. > > > > Any thoughts? > > > > Linda > > > > Linda > > > > > > > > -----Original Message----- > > From: <mailto:programming-boun...@forums.jsoftware.com> > programming-boun...@forums.jsoftware.com > > [ <mailto:programming-boun...@forums.jsoftware.com> > mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Raul > Miller > > Sent: Friday, October 19, 2012 9:30 AM > > To: <mailto:programm...@jsoftware.com> programm...@jsoftware.com > > Subject: Re: [Jprogramming] stitching matrices > > > > On Fri, Oct 19, 2012 at 4:00 AM, Linda Alvord < > <mailto:lindaalv...@verizon.net> lindaalv...@verizon.net> > > wrote: > >> G B > >> 1 1 1 1 1 > >> H B > >> ran with error: > >> |domain error: H > >> | H B > >> |[-30] c:\users\owner\j701-user\temp\37.ijs > > >> G WORKS! H DOESN'T! > > >> How can I write the function H without & and get 1 1 1 1 ? > > > > Here's G B > > ((=&{:)|.)"1 $~&5 4 i.3 > > 1 1 1 1 1 > > > > Here, I rephrase G by eliminating the & > > (({:@[ = {:@])|.)"1 $~&5 4 i.3 > > 1 1 1 1 1 > > > > Note that I am testing the result at each step, here, to make sure > I've not made any bad assumptions (for example, hypothetically > speaking some intermediate results in these kinds of transformations > might need some explicit treatment of rank). > > > > Here, I further rephrase G by also eliminating both of the @ > conjunctions > > ((([: {: [) = ([: {: ]))|.)"1 $~&5 4 i.3 > > 1 1 1 1 1 > > > > Here, I simplify slightly by using a hook > > (((([: {: [) = ]) {:)|.)"1 $~&5 4 i.3 > > 1 1 1 1 1 > > > > Here, I simplify again by using a cross hook > > (((= {:)~ {:) |.)"1 $~&5 4 i.3 > > 1 1 1 1 1 > > > > Good enough? > > > > Thanks, > > > > -- > > Raul > > ---------------------------------------------------------------------- > > For information about J forums see > <http://www.jsoftware.com/forums.htm> > http://www.jsoftware.com/forums.htm > > > > ---------------------------------------------------------------------- > > For information about J forums see > <http://www.jsoftware.com/forums.htm> > 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
