Thanks, I never cease to be amazed by J.
When you write a tacit verb like (;@; $~ 2,~[:+/ #&>) from scratch do you do it left-to-right (starting with ;@;) or right-to-left (starting with #&>)? I always start at the right and add new things to the left. Maybe that is where I am going wrong and ending up with so many brackets and caps. --- "R.E. Boss" <[EMAIL PROTECTED]> wrote: > [: ;[:; ] should be ;@; > +/[: > [: #&.> ] should be #&> > > which leaves us with > > ((([:+/ #&>),2:)$;@;) (<10 20);<(3 4;<1 2) > 10 20 > 3 4 > 1 2 > > which could be further simplified to > > (;@; $~ 2,~[:+/ #&>) (<10 20);<(3 4;<1 2) > 10 20 > 3 4 > 1 2 > > > R.E. Boss > > > > > -----Oorspronkelijk bericht----- > > Van: [EMAIL PROTECTED] > [mailto:programming- > > [EMAIL PROTECTED] Namens Matthew Brand > > Verzonden: donderdag 28 februari 2008 10:19 > > Aan: Programming forum > > Onderwerp: Re: [Jprogramming] boxed data > manipulation > > > > Thanks Peter, that got me there. > > > > I added this bit of code to make it count the > number > > of rows that would be output for the reshape verb > > (since I don't know that from the outset). > > > > I always end up using [: a lot when I write tacit > > programs. Out of interest, does anyone know a > cleaner > > way to write the tacit expression below? > > > > ( (([: +/[: > [: #&.> ]),2:) $ [: ;[:; ]) (<10 > > 20);<(3 4;<1 2) > > > > Cheers, > > Matthew. > > > > --- Peter Vingron <[EMAIL PROTECTED]> wrote: > > > > > Hallo Mathew, > > > > > > Is this of any help?: > > > > > > 3 2$;;(<10 20);<(3 4;< 1 2) > > > > > > regards, > > > Peter > > > > > > > > > Matthew Brand schrieb: > > > > Hi All, > > > > > > > > How can I get pairs of numbers which are in > boxes > > > like > > > > this: > > > > (<10 20);<(3 4;< 1 2) > > > > > > > > out into an array that looks like this: > > > > 3 2 $ 10 20 3 4 1 2 > > > > > > > > The contents of each box are x,y data points > that > > > I > > > > want to lump together and model. > > > > > > > > The number of levels/structure is always as in > the > > > > example, that is a list of boxes where each > box > > > > contains a list of boxes where the boxes > contain a > > > > list of 2 numeric atoms. > > > > > > > > Thanks, > > > > Matthew. > > > > > > > > > > > > > > > > > > __________________________________________________________ > > > > Sent from Yahoo! Mail. > > > > A Smarter Inbox. > > > http://uk.docs.yahoo.com/nowyoucan.html > > > > > > > > > > ---------------------------------------------------------------------- > > > > For information about J forums see > > > http://www.jsoftware.com/forums.htm > > > > > > > > > > > > > > > > > ---------------------------------------------------------------------- > > > For information about J forums see > > > http://www.jsoftware.com/forums.htm > > > > > > > > > > > > ___________________________________________________________ > > Rise to the challenge for Sport Relief with Yahoo! > For Good > > > > http://uk.promotions.yahoo.com/forgood/ > > > ---------------------------------------------------------------------- > > For information about J forums see > http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > For information about J forums see > http://www.jsoftware.com/forums.htm > __________________________________________________________ Sent from Yahoo! Mail. A Smarter Inbox. http://uk.docs.yahoo.com/nowyoucan.html ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
