0 1 2&|: will do the job. I recommend reading the dictionary definition of |: through a few times. In particular, note that 0 1&|: on a rank three array is the same as 2 0 1&|: , and 0 1 2&|: turns into 3 0 1 2&|: on a rank four array.
Marshall On Fri, Dec 07, 2012 at 03:02:49PM -0500, Brian Schott wrote: > I am working with photographic images which use RGB color. > The array d is a single image and the array D is now 2 images but I > want D to contain any number of images. And I want split out the > R,G, and B part which I can do for d, but I am having difficulty > with the analogous r, g, and b for D. > > $d > 50 50 3 > $D > 2 50 50 3 > > 'R G B'=: 0 1|: d > $G > 50 50 > > What is the mysteryverb that will produce ($g)-:2 50 50 in the > following expression? > 'r g b'=: mysteryverb D > > Thanks, > > (B=) > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
