bugGNU Octave - Bugs: bug #33887, LU Factorization cannot give a...

 
 

bug #33887: LU Factorization cannot give a desired order of lower matrix

Submitted by:  Ben <verilog>
Submitted on:  Sat 30 Jul 2011 04:54:18 AM UTC  
 
Category: NoneSeverity: 3 - Normal
Priority: 5 - NormalItem Group: Incorrect Result
Status: InvalidAssigned to: None
Originator Name: verilogOpen/Closed: Closed
Release: 3.2.4Operating System: Microsoft Windows

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Sat 30 Jul 2011 05:27:01 AM UTC, comment #1:

Not a bug. The LU factorisation may pivot. If you want the pivoting in a separate matrix, you need to request it. Try

instead.

Jordi GutiƩrrez Hermoso <jordigh>
Project Administrator
Sat 30 Jul 2011 04:54:18 AM UTC, original submission:

I'm not sure if it is a bug
output:
l=
0.50000 1.00000 0.00000
1.00000 0.00000 0.00000
0.50000 1.00000 1.00000

what I expect:
l=
1.00000 0.00000 0.00000
0.50000 1.00000 0.00000
0.50000 1.00000 1.00000

Thanks!

Ben <verilog>

 

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Attach File(s):
   
   
Comment:
   

Attached Files
file #23713:  test.m added by verilog (43B - text/plain)

 

Depends on the following items: None found

Items that depend on this one: None found

 

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  • -unavailable- added by jordigh (Posted a comment)
  • -unavailable- added by verilog (Submitted the item)
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    Follow 4 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Sat 30 Jul 2011 05:27:01 AM UTCjordighStatusNone=>Invalid
      Open/ClosedOpen=>Closed
    Sat 30 Jul 2011 04:54:18 AM UTCverilogAttached File-=>Added test.m, #23713
      Carbon-Copy-=>Added -unavailable-

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