Issue 77930 - Need option for a Polynomial Regression Curve
Summary: Need option for a Polynomial Regression Curve
Status: CLOSED DUPLICATE of issue 20819
Alias: None
Product: General
Classification: Code
Component: chart (show other issues)
Version: 3.3.0 or older (OOo)
Hardware: PC Windows XP
: P3 Trivial with 2 votes (vote)
Target Milestone: ---
Assignee: spreadsheet
QA Contact: issues@graphics
URL:
Keywords: oooqa
Depends on:
Blocks:
 
Reported: 2007-05-30 12:23 UTC by vabijou
Modified: 2013-02-24 21:21 UTC (History)
2 users (show)

See Also:
Issue Type: ENHANCEMENT
Latest Confirmation in: ---
Developer Difficulty: ---

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Description vabijou 2007-05-30 12:23:47 UTC 
Currently, there is no ability to add a polynomial regression curve to chart 
data.  This functionality should be added since it is a very commonly occurring 
curve shape in the engineering and scientific worlds.
Comment 1 Regina Henschel 2007-05-30 13:52:45 UTC 
Please write the function type, which do you miss, as term as for linear
regression "y=m*x+b" would be.
Comment 2 vabijou 2007-05-30 20:52:47 UTC 
From a description given on 
http://www.graphpad.com/curvefit/other_regressions.htm

Polynomial regression fits data to this equation:

Y = A + Bx + Cx^2 + Dx^3 + Ex^4 .....

You can include any number of terms. If you stop at the second (B) term, it is 
called a first-order polynomial equation, which is identical to the equation 
for a straight line. If you stop after the third (C) term, it is called a 
second-order, or quadratic, equation. If you stop after the fourth term, it is 
called a third-order, or cubic, equation
Comment 3 Regina Henschel 2007-05-30 21:10:34 UTC 
That is a very clear description of the desired feature. Therefore I hesitate to
close it as duplicate of issue 20819. I think, developer should decide, with
which one they can work better.
Comment 4 kla 2007-05-31 14:53:50 UTC 
duplicate

*** This issue has been marked as a duplicate of 20819 ***
Comment 5 kla 2007-05-31 14:54:40 UTC 
closed as duplicate