[Octave-bug-tracker] [bug #40294] Logical indexing into sparse matrix hangs

[David Spies]

URL:
  <http://savannah.gnu.org/bugs/?40294>

                 Summary: Logical indexing into sparse matrix hangs
                 Project: GNU Octave
            Submitted by: dspyz
            Submitted on: Thu 17 Oct 2013 19:07:53 GMT
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Performance
                  Status: None
             Assigned to: None
         Originator Name: dspies
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.2.4
        Operating System: GNU/Linux

    _______________________________________________________

Details:

After:

m = sparse(100000,100000);
v = logical(sprand(100000,1,0.3));

The operation:

m(v,:) = 0;

hangs (the same happens when 0 is replaced with a sparse matrix of the
appropriate size).

However

m -= diag(v) * m

works just fine





    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?40294>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/