I guess it depends on what "very large" means. Do you know any Python? If so, one option is just read in the file of entries then write a python/sage script to create the matrix in Sage from that. I think large integer matrices use linbox, which I think is easily capable of some matrix computations whose row-dim and column-dim are in the thousands (according to http://www.sagemath.org/doc/ref/module-sage.matrix.matrix-integer-dense.html, they must be <2^64-1 on a 64 bit machine).
On Sat, Jan 31, 2009 at 11:18 PM, John Matrix <johnmatrix...@yahoo.com> wrote: > > Hi, > > I'd like to read a very large integer dense square matrix into sage > from a file, in order to determine its rank. I could not find much > information on what format I should store the matrix in, and what > commands to use to read it. Any help would be appreciated. > > Thanks! > > > > --~--~---------~--~----~------------~-------~--~----~ 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 URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
