(</.~/)(]/:"1{:)(,:*) _3 1 0 1 _1 0 _10 _2 _4 6
+---------------+---+-----+
|_3 _1 _10 _2 _4|0 0|1 1 6|
+---------------+---+-----+No need for 1+ R.E. Boss > -----Oorspronkelijk bericht----- > Van: programming-boun...@jsoftware.com [mailto:programming- > boun...@jsoftware.com] Namens John Randall > Verzonden: woensdag 22 september 2010 19:42 > Aan: programming@jsoftware.com > Onderwerp: [Jprogramming] Classification problem > > I'm looking for help with a simple programming problem. > > Suppose my data consists of integers, and I have a classification to a > small number of values. > > For example > > f=:1+* > data=:_3 1 0 1 _1 0 _10 _2 _4 6 > > f data > 0 2 1 2 0 1 0 0 0 2 > > I then want to organize the data into boxes based on these values, for > example > > +---------------+---+-----+ > |_3 _1 _10 _2 _4|0 0|1 1 6| > +---------------+---+-----+ > > I got this using > > (0 1 2=/f data) <@# data > > Is there a simpler or better way? > > Best wishes, > > John > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
