This is pretty nice! I was trying to come up with something like this but failed
How did you arrive at this expression? 2006/11/26, Oleg Kobchenko <[EMAIL PROTECTED]>:
c 1:`(>@[)`]}"0 1 m 0 1 0 1 0 0 1 0 1 0 0 0 1 0 0 0 ----- Original Message ---- From: Björn Helgason <[EMAIL PROTECTED]> To: Programming forum <[email protected]> Sent: Sunday, November 26, 2006 3:56:02 PM Subject: Re: [Jprogramming] updating matrix cell values c=.1 3;2;0;0 c ┌───┬─┬─┬─┐ │1 3│2│0│0│ └───┴─┴─┴─┘ m=.4 4$0 m 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1(; c ,&.> ~ &.> i.4) }m 0 1 0 1 0 0 1 0 1 0 0 0 1 0 0 0 2006/11/26, Björn Helgason <[EMAIL PROTECTED]>: > > c=:0 1; 0 3;1 2;2 0;3 0 > 1 c} m > 0 1 0 1 > 0 0 1 0 > 1 0 0 0 > 1 0 0 0 > > > 2006/11/26, Kairit Sirts <[EMAIL PROTECTED]>: > > > > Hi! > > > > But now another problem: > > > > > a =: ;: 'he ha ho he hi he' > > > b =: ~. a > > c =: 1 4; 2 ; 3; 5 > > > d =: c { each <b i. a > > > +---+-+-+-+ > > > |1 3|2|0|0| > > > +---+-+-+-+ > > > > > > > Now I have the following matrix: > > > > m =: ((#b), #b) $ 0 > > > > and I have to fill it based on the information in d. Each cell of d > > corresponds to each row of m. Indexes in cells show which positions in > > that > > row in m should be incremented by one. > > > > After this procedure using example data above the m should look the > > following: > > > > m > > 0 1 0 1 > > 0 0 1 0 > > 1 0 0 0 > > 1 0 0 0 > > > > I studied the vocabulary and the following verbs seem to be useful for > > this > > task: > > Dyad {:: for selecting items from d, but I understand that it cannot be > > used > > for selecting several items (for example i.3 {:: d). > > m} for amending the matrix elements, but how to use it for replacing the > > > > cell value with the current cell value + 1? > > > > Any other suggestions, which verbs to use and how to combine them to get > > the > > task done? > > > > Kairit > > > > > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > > > -- > Björn Helgason, Verkfræðingur > Fugl&Fiskur ehf, Þerneyjarsund 23, Box 127 > 801 Grímsnes ,t-póst: [EMAIL PROTECTED] > Skype: gosiminn, gsm: +3546985532 > Landslags og skrúðgarðagerð, gröfuþjónusta > 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 | > ( -. | `-----------------------------------' > | ) | (\_ _/) > (`-. '--.) (='.'=) > `. )----' (")_(") -- Björn Helgason, Verkfræðingur Fugl&Fiskur ehf, Þerneyjarsund 23, Box 127 801 Grímsnes ,t-póst: [EMAIL PROTECTED] Skype: gosiminn, gsm: +3546985532 Landslags og skrúðgarðagerð, gröfuþjónusta 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 ____________________________________________________________________________________ Cheap talk? Check out Yahoo! Messenger's low PC-to-Phone call rates. http://voice.yahoo.com ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
-- Björn Helgason, Verkfræðingur Fugl&Fiskur ehf, Þerneyjarsund 23, Box 127 801 Grímsnes ,t-póst: [EMAIL PROTECTED] Skype: gosiminn, gsm: +3546985532 Landslags og skrúðgarðagerð, gröfuþjónusta 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 | ( -. | `-----------------------------------' | ) | (\_ _/) (`-. '--.) (='.'=) `. )----' (")_(")
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