On 5/17/07, Nick Alexander <[EMAIL PROTECTED]> wrote: > While I'm here, what's the good way to get a column slice? Say the > moral equivalent of matrix(...)[,:4], which gets the first four > columns?
sage: m = random_matrix(QQ,4, 7); m [ -2 -2 -1 -1 -1 1/2 -1] [ 0 -2 0 0 0 2 1/2] [ 1/2 0 -2 -1 -1/2 2 -2] [ 0 -1/2 1/2 -2 0 1 -1] sage: m.matrix_from_columns(range(4)) [ -2 -2 -1 -1] [ 0 -2 0 0] [ 1/2 0 -2 -1] [ 0 -1/2 1/2 -2] --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
