Here is another way: sage: coeffs = [[i^2-j for j in range(6)] for i in range(6)] sage: matrix(coeffs) [ 0 -1 -2 -3 -4 -5] [ 1 0 -1 -2 -3 -4] [ 4 3 2 1 0 -1] [ 9 8 7 6 5 4] [16 15 14 13 12 11] [25 24 23 22 21 20]
On Sat, Mar 13, 2010 at 7:58 AM, Alasdair <[email protected]> wrote: > This can be done in maxima: > > genmatrix(lambda([i,j],i-j),6,6); > > for example. But is there an easy Sage way of doing this? If I enter > > sage: M=maxima('genmatrix(lambda([i,j],i-j),6,6)') > > then I obtain a Maxima matrix, which then has to turned into a Sage > matrix (I don't know how to do this either). Clearly I could: > > sage: M=matrix(ZZ,6,6) > sage: for i in range(6): > ....: for j in range(6): > ....: M[i,j]=i-j > > but that seems a bit longwinded. Is there an easy straightforward > way? > > Thanks, > Alasdair > > -- > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/sage-support > URL: http://www.sagemath.org > -- To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
