Does (</.~ f) data do what you want? -Dan
Please excuse typos; composed on a handheld device. -----Original Message----- From: "John Randall" <[email protected]> Sender: [email protected] Date: Wed, 22 Sep 2010 13:41:35 To: <[email protected]> Reply-To: Programming forum <[email protected]> Subject: [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
