[Jprogramming] Crash with p.
A numerical error crashes J p. _1E10 _1 0 0 1 works p. _77 _1 0 0 0 1 works p. _78 _1 0 0 0 1 crashes p. _14 _1 0 0 0 0 1 works p. _15 _1 0 0 0 0 1 crashes p. _8 _1 0 0 0 0 0 1 crashes p. _7 _1 0 0 0 0 0 1 works Version used: J807/j64/windows Greetings, Markus -- For information about J forums see http://www.jsoftware.com/forums.htm
Re: [Jprogramming] sqlupdate
Thank you, Chris, worked immediately. -Ursprüngliche Nachricht- Von: Programming Im Auftrag von chris burke Gesendet: Samstag, 30. November 2019 13:19 An: Programming forum Betreff: Re: [Jprogramming] sqlupdate j805 has an earlier version of the sqlite addon with no sqlupdate function. For an update you need to construct a SQL expression and run that, e.g. something like sqlcmd__db 'update tab set d="elmo" where rowid=7' On Sat, Nov 30, 2019 at 3:26 AM Schmidt-Gröttrup, Markus < m.schmidt-groett...@hs-osnabrueck.de> wrote: > I am wondering what is wrong with the surrounding such that > sqlupdate is not available, when other sql-verbs are. > > > load 'data/sqlite' > > db=. sqlopen_psqlite_ AVDB,'/aufgaben.sqlite3' > > sqlupdate__db > > |value error: sqlupdate__db > > sqlinsert__db > > 3 : 0 > > 'tab nms dat'=. y > > if. 0 e. $dat do. 0 return. end. > > if. 0 e. $nms do. nms=. sqlcols tab end. > ... > >I am running j805/j64/windows. > Thanks for your help. > > Markus > > -- > 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
[Jprogramming] sqlupdate
I am wondering what is wrong with the surrounding such that sqlupdate is not available, when other sql-verbs are. load 'data/sqlite' db=. sqlopen_psqlite_ AVDB,'/aufgaben.sqlite3' sqlupdate__db |value error: sqlupdate__db sqlinsert__db 3 : 0 'tab nms dat'=. y if. 0 e. $dat do. 0 return. end. if. 0 e. $nms do. nms=. sqlcols tab end. ... I am running j805/j64/windows. Thanks for your help. Markus -- For information about J forums see http://www.jsoftware.com/forums.htm
Re: [Jprogramming] Intersection and Union of (multi)sets
Should be IS=:+./&.([:q:^:_1 p:) NB. Intersection UN=:*./&.([:q:^:_1 p:) NB. union Markus S.-G. -Ursprüngliche Nachricht- Von: Programming Im Auftrag von Don Guinn Gesendet: Dienstag, 30. Oktober 2018 15:46 An: Programming forum Betreff: Re: [Jprogramming] Intersection and Union of (multi)sets Looks better. UN=:+./&.([:q:^:_1 p:) IS=:*./&.([:q:^:_1 p:) 1 2 3 3 3 UN 3 3 3 3 3 4 5 6 3 3 3 1 2 3 3 3 IS 3 3 3 3 3 4 5 6 1 2 3 3 3 3 3 4 5 6 On Tue, Oct 30, 2018 at 7:56 AM Don Guinn wrote: > You're right. The trick is to make them prime numbers. But it's not pretty. > > IS=:(_1 p:[:q:+.&([:*/[:p:]))/ > > UN=:(_1 p:[:q:*.&([:*/[:p:]))/ > > 1 2 3 3 3 UN 3 3 3 3 3 4 5 6 > > 1 2 3 3 3 3 3 4 5 6 > > 1 2 3 3 3 IS 3 3 3 3 3 4 5 6 > 3 3 3 > > On Tue, Oct 30, 2018 at 4:58 AM 'Bo Jacoby' via Programming < > programm...@jsoftware.com> wrote: > >> >> IS=.+.&.(*/) >> >> UN=.*.&.(*/) >> >> >> This still works for multisets of prime numbers. >> Den tirsdag den 30. oktober 2018 11.55.04 CET skrev 'Bo Jacoby' >> via Programming : >> >> >>IS=.[:q:+.&(*/) >> >> UN=.[:q:*.&(*/) >> 2 3 3 5 IS 3 5 5 5 >> 3 5 >> 2 3 3 5 UN 3 5 5 5 >> 2 3 3 5 5 5 >> This works for multisets of PRIME numbers only. >> >> >> Den tirsdag den 30. oktober 2018 10.46.17 CET skrev R.E. Boss < >> r.e.b...@outlook.com>: >> >> IMO we should interpret the intersection and the union of two >> (multi)sets (sets X with X
Re: [Jprogramming] Fractional parts
Skip, have you considered to use extended precision? In your example only small fraction are used, and the methods discussed would apply as well without precision problems. v=:2%(3r19-%x:1 2 3 245 246 247 248) I haven’t read the whole thread, so sorry if this contribution doesn’t fit. Markus -Ursprüngliche Nachricht- Von: Programming [mailto:programming-boun...@forums.jsoftware.com] Im Auftrag von Martin Kreuzer Gesendet: Mittwoch, 9. August 2017 16:35 An: programm...@jsoftware.com Betreff: Re: [Jprogramming] Fractional parts From what I've gathered so far is, that people seem to not mind that much, when extracting the fractional part from a (negative) float, they use (1&|) _8.11 0.89 or
Re: [Jprogramming] cleanest diamond
A morphological closure is the reasonable treating. With these definitions: im1 =: _48+ (, ;._2) a. i. 0 : 0 00 00 00 00 001000 011100 011100 10 000111 000011 001000 01 10 000101 001101 0100011100 00110101011100 01 00001110010110 0001110110 000101 0111011000 0101010100 101100 0001101110 0001101100 101000 00 00 00 ) ushift =: 0 ,~ }. dshift =: 0 , }: lshift =: 0 ,"1~ }."1 rshift =: 0 ,"1 }:"1 ulshift =: ushift@lshift urshift =: ushift@rshift dlshift =: dshift@lshift drshift =: dshift@rshift clos22 =: (]*.rshift)@:(]*.dshift)@:(]+.lshift)@:(]+.ushift) closc4 =: (]*.urshift)@:(]*.drshift)@:(]*.rshift)@:(]*.dshift)@:(]+.dlshift)@:(]+.ulshift)@:(]+.lshift)@:(]+.ushift) show =: (-.&' ')"1 @: ": closures with a 2*2 square or a circle with diameter 4 are shown with: show im1 + clos22 im1 00 00 00 00 002000 022200 022200 20 000222 000122 002000 021000 20 000212 002212 0211122200 11221212122200 02 00112221121220 0002221220 0002121000 0222122000 0212121200 0001212200 0002212220 0002212200 212000 00 00 00 show im1 + closc4 im1 00 00 00 00 002000 022200 022200 20 000222 000122 002000 021100 20 000212 0022121000 0211122200 11221212122200 02 00112221121220 0002221220 0002121100 1222122000 0212121211 0011212210 0002212220 0002212200 212000 00 00 00 Best regards, Markus -Ursprüngliche Nachricht- Von: Programming [mailto:programming-boun...@forums.jsoftware.com] Im Auftrag von Marshall Lochbaum Gesendet: Dienstag, 27. Juni 2017 10:20 An: programm...@jsoftware.com Betreff: Re: [Jprogramming] cleanest diamond A common strategy that may work for you is just to ignore the spacial data and perform some sort of clustering (like k-means, with k=2) on the intensities. Then classify pixels according to which cluster they fall in. An approach that does use this data, and which I expect would be much slower but somewhat more accurate, would be to use the realization that a threshold that maximizes the number of contiguous 1's minimizes the number of adjacent pixels which are separated by the threshold (that is, adjacent 0-1 pairs). To minimize this number, we need to collect all pairs of adjacent pixels, then turn consider these pairs as intervals and compute for each possible threshold the number of these intervals which contain it. I don't have any particularly clever ways to find pairs of adjacent pixels. For the strictest form of adjacency, with no diagonals, the verb ((}. ,.&, }:) , (}."1 ,.&, }:"1)) will get them all. Each pair should then be sorted, to put them in a standard interval form. An efficient way to turn a list of intervals into a list of number-of-intervals-containing uses an obverse of monad (I.), which I am increasingly coming to believe is a major feature missing from J. To wit: x =. 4 7 2 4 1 7 8 (10$0) (#/.~@])`(~.@])`[}"1 x 0 1 1 0 2 0 0 2 1 0 I. (10$0) (#/.~@])`(~.@])`[}"1 x 1 2 4 4 7 7 8 (/:~x) -: I. (10$0) (#/.~@])`(~.@])`[}"1 x 1 The verb ((#/.~@])`(~.@])`[}) with an appropriate left argument is an left inverse to I. ignoring trailing zeros, and a right inverse to I. ignoring ordering. It counts, for each number in (i.n) where n is the length of the left argument,
Re: [Jprogramming] verb to set an element of an array
Try put =: 4 : '42 (x)}y' verb is defined as 3, meaning a monadic verb, but a dyadic verb is needed. Best regards, Markus -Ursprüngliche Nachricht- Von: Programming [mailto:programming-boun...@forums.jsoftware.com] Im Auftrag von Rudolf Sykora Gesendet: Freitag, 23. Juni 2017 11:24 An: programm...@jsoftware.com Betreff: [Jprogramming] verb to set an element of an array Hello, I want to set x'th element of y to 42. I tried quite a few variations of put := verb : '42 x}y' but I am still getting 1 put 1 2 3 |domain error: put Can you tell me what is wrong, and tell me how to do it right? Thanks Ruda -- For information about J forums see http://www.jsoftware.com/forums.htm -- For information about J forums see http://www.jsoftware.com/forums.htm
Re: [Jprogramming] plot in J805
Thanks for your help, Bill. Updated all packages, now plot works. Great! -Ursprüngliche Nachricht- Von: Programming [mailto:programming-boun...@forums.jsoftware.com] Im Auftrag von Schmidt-Gröttrup, Markus Gesendet: Freitag, 31. März 2017 17:12 An: programm...@jsoftware.com Betreff: Re: [Jprogramming] plot in J805 ide/qt manifest: VERSION=: '1.1.118' I use qt. where would I find pacman Studio|Demos? -Ursprüngliche Nachricht- Von: Programming [mailto:programming-boun...@forums.jsoftware.com] Im Auftrag von bill lam Gesendet: Freitag, 31. März 2017 17:05 An: programm...@jsoftware.com Betreff: Re: [Jprogramming] plot in J805 ide/qt addon. If you are not using jqt, then on which front-end did you test? jhs, jconsole ? Also the version of your addons are not the latest on jal. Please check using pacman to see what are the latest version that you can get. Пт, 31 мар 2017, Schmidt-Gröttrup, Markus написал(а): > > plot/manifest.ijs: > VERSION=: '1.0.179' > > gl2/manifest.ijs: > VERSION=: '1.0.91' > > qt ? > > > -Ursprüngliche Nachricht- > Von: Programming [mailto:programming-boun...@forums.jsoftware.com] Im > Auftrag von bill lam > Gesendet: Freitag, 31. März 2017 15:32 > An: Programming forum <programm...@jsoftware.com> > Betreff: Re: [Jprogramming] plot in J805 > > also the version number of gl2 and qt addons. thanks. > > On 31 Mar, 2017 9:15 pm, "Schmidt-Gröttrup, Markus" < > m.schmidt-groett...@hs-osnabrueck.de> wrote: > > I recently have updated to J805 (Windows 10) and find the plot package > with > errors: > > |value error: glpaintx > |value error: glsel > > I assume I have to load an additional package, but did not find which one. > Thank you for a hint. > > Markus Schmidt-Gröttrup > > -- > 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 -- regards, GPG key 1024D/4434BAB3 2008-08-24 gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 gpg --keyserver subkeys.pgp.net --armor --export 4434BAB3 -- 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
Re: [Jprogramming] plot in J805
ide/qt manifest: VERSION=: '1.1.118' I use qt. where would I find pacman Studio|Demos? -Ursprüngliche Nachricht- Von: Programming [mailto:programming-boun...@forums.jsoftware.com] Im Auftrag von bill lam Gesendet: Freitag, 31. März 2017 17:05 An: programm...@jsoftware.com Betreff: Re: [Jprogramming] plot in J805 ide/qt addon. If you are not using jqt, then on which front-end did you test? jhs, jconsole ? Also the version of your addons are not the latest on jal. Please check using pacman to see what are the latest version that you can get. Пт, 31 мар 2017, Schmidt-Gröttrup, Markus написал(а): > > plot/manifest.ijs: > VERSION=: '1.0.179' > > gl2/manifest.ijs: > VERSION=: '1.0.91' > > qt ? > > > -Ursprüngliche Nachricht- > Von: Programming [mailto:programming-boun...@forums.jsoftware.com] Im > Auftrag von bill lam > Gesendet: Freitag, 31. März 2017 15:32 > An: Programming forum <programm...@jsoftware.com> > Betreff: Re: [Jprogramming] plot in J805 > > also the version number of gl2 and qt addons. thanks. > > On 31 Mar, 2017 9:15 pm, "Schmidt-Gröttrup, Markus" < > m.schmidt-groett...@hs-osnabrueck.de> wrote: > > I recently have updated to J805 (Windows 10) and find the plot package > with > errors: > > |value error: glpaintx > |value error: glsel > > I assume I have to load an additional package, but did not find which one. > Thank you for a hint. > > Markus Schmidt-Gröttrup > > -- > 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 -- regards, GPG key 1024D/4434BAB3 2008-08-24 gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 gpg --keyserver subkeys.pgp.net --armor --export 4434BAB3 -- For information about J forums see http://www.jsoftware.com/forums.htm -- For information about J forums see http://www.jsoftware.com/forums.htm
Re: [Jprogramming] plot in J805
plot/manifest.ijs: VERSION=: '1.0.179' gl2/manifest.ijs: VERSION=: '1.0.91' qt ? -Ursprüngliche Nachricht- Von: Programming [mailto:programming-boun...@forums.jsoftware.com] Im Auftrag von bill lam Gesendet: Freitag, 31. März 2017 15:32 An: Programming forum <programm...@jsoftware.com> Betreff: Re: [Jprogramming] plot in J805 also the version number of gl2 and qt addons. thanks. On 31 Mar, 2017 9:15 pm, "Schmidt-Gröttrup, Markus" < m.schmidt-groett...@hs-osnabrueck.de> wrote: I recently have updated to J805 (Windows 10) and find the plot package with errors: |value error: glpaintx |value error: glsel I assume I have to load an additional package, but did not find which one. Thank you for a hint. Markus Schmidt-Gröttrup -- 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
[Jprogramming] plot in J805
I recently have updated to J805 (Windows 10) and find the plot package with errors: |value error: glpaintx |value error: glsel I assume I have to load an additional package, but did not find which one. Thank you for a hint. Markus Schmidt-Gröttrup -- For information about J forums see http://www.jsoftware.com/forums.htm
