(<0 1)|:m
On Fri, Jan 6, 2012 at 12:47 PM, Alex Giannakopoulos < aeg...@blueyonder.co.uk> wrote: > Hi > > Is there a better (more efficient or whatever) way of getting the diagonal > of a matrix than the simple multiplication I use below? > > Say, > > randmat=. [: ? 0 $~,~ > idmat =. [:=i. > randiag =. randmat * idmat > > Many Thanks > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
