Hello, On Tue, Apr 5, 2011 at 12:00 AM, pong <wypon...@gmail.com> wrote: > By that I simply mean a function that on input a real matrix M returns > the matrix N such that n[i][j] = abs(m[i][j]). > > This can be achieve by something like: > > n = len(M.rows()); m =len(M.columns()); N = matrix(n,m,lambda i,j: > abs(M[i][j]));
A bit cleaner is: sage: B = matrix(2,2,lambda i,j: i-j); B [ 0 -1] [ 1 0] sage: B.apply_map(abs) [0 1] [1 0] --Mike -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
