Hi all, The current status wrt comparision of sparse matrices is File "/usr/lib64/python2.4/site-packages/scipy/sparse/sparse.py", line 155, in __cmp__ raise TypeError, "comparison of sparse matrices not implemented" TypeError: comparison of sparse matrices not implemented http://aspn.activestate.com/ASPN/Mail/Message/scipy-dev/2240626 Shall I submit a ticket for this feature ? Nils