[Octave-bug-tracker] [bug #32523] misstatement in help message for "pascal"

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?32523>

                 Summary: misstatement in help message for "pascal"
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Thu 17 Feb 2011 08:31:07 PM UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Documentation
                  Status: None
             Assigned to: None
         Originator Name: M. M. Sussman
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.2.3
        Operating System: GNU/Linux

    _______________________________________________________

Details:

The response to "help pascal" states:

 -- Function File:  pascal (N, T)
     Return the Pascal matrix of order N if `T = 0'.  T defaults to 0.
     Return lower triangular Cholesky factor of the Pascal matrix if `T= 1'.


In fact, the result of pascal(N,1) is a lower triangular matrix with columns
of alternating sign.  This result is correct in that it agrees with Matlab,
but it is NOT the Cholesky factor.  The Cholesky factor has only positive
values on the diagonal.  The matrix returned for T=-1 IS the Cholesky factor.




    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?32523>

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