Maurizio's function is pretty nice! It's exactly what I was looking for. I think it should be included in future releases. But it's a bit slow (at least for the 1..1e9 range), maybe it should be rewritten or compiled. The only thing I didn't like is that it saves the image to the current directory, while plot() saves it to a temporary directory and displays it immediately, even when called from the command line.
About dagss idea of an object that worked as the inverse of a matrix, but without actually inverting the matrix, I think it would be a good idea. This is, a function inv(M) that returned a symbolic inverse of M. This way: N = inv(M) N * a # returns M \ a N \ a # returns M * a matrix(N) # calculates the inverse, or the pseudo-inverse, of M And if .T and .H would be possible, I think they're a good solution. And about trace()... yes, it's weird that trace(M) and M.trace() behave differently. -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
