On Thu, Dec 10, 2015 at 3:13 AM, Linda A Alvord <lindaalv...@verizon.net> wrote: > (I couldn't remember a shortcut to get a diagonal from a square matrix.
m7, m8, m9 and m10 from http://www.jsoftware.com/help/phrases/special_matrices.htm get the main diagonal (leading from the upper left corner to the lower right of the table). But m9 only works on square tables (where the end of that diagonal is also the lower right corner). You can also get all of the diagonals that cross the main one using monadic (u/.) Does any of this help? Thanks, -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
