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[Octave-bug-tracker] [bug #46126] Polyfit bug: Different polynomial coef
From: |
anonymous |
Subject: |
[Octave-bug-tracker] [bug #46126] Polyfit bug: Different polynomial coefficients when using optional output |
Date: |
Mon, 05 Oct 2015 07:49:57 +0000 |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0 |
URL:
<http://savannah.gnu.org/bugs/?46126>
Summary: Polyfit bug: Different polynomial coefficients when
using optional output
Project: GNU Octave
Submitted by: None
Submitted on: Mo 05 Okt 2015 07:49:56 UTC
Category: Octave Function
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Incorrect Result
Status: None
Assigned to: None
Originator Name: Nicole Dröge
Originator Email: address@hidden
Open/Closed: Open
Discussion Lock: Any
Release: 4.0.0
Operating System: Microsoft Windows
_______________________________________________________
Details:
Using the polyfit function without the optional arguments
p1 = polyfit(x,y,N)
gives different polynomial coefficients p than using polyfit with the optional
arguments
[p2,s,mu] = polyfit(x,y,N)
My expectation and understanding of the polyfit doc is that p1=p2, but it is
p1!=p2.
I am using an Win 7, 64 bit system with MinGW-32bit.
Attached I send an input file, which produces the error, and also log files of
Octave 4.0.0 and 3.6.4 of the console output where the results can be
reviewed.
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Mo 05 Okt 2015 07:49:56 UTC Name: Bug_polyfit.m Size: 1kB By: None
Input file, which produces the bug, and output files with calculation results
<http://savannah.gnu.org/bugs/download.php?file_id=35066>
-------------------------------------------------------
Date: Mo 05 Okt 2015 07:49:56 UTC Name: Bug_polyfit_Octave3.6.4.out Size:
1kB By: None
Input file, which produces the bug, and output files with calculation results
<http://savannah.gnu.org/bugs/download.php?file_id=35067>
-------------------------------------------------------
Date: Mo 05 Okt 2015 07:49:56 UTC Name: Bug_polyfit_Octave4.0.0.out Size:
1kB By: None
Input file, which produces the bug, and output files with calculation results
<http://savannah.gnu.org/bugs/download.php?file_id=35068>
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?46126>
_______________________________________________
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- [Octave-bug-tracker] [bug #46126] Polyfit bug: Different polynomial coefficients when using optional output,
anonymous <=