Bug 87018

Summary: fits to curves with different length X and Y vectors is incorrect.
Product: [Applications] kst Reporter: Netterfield <netterfield>
Component: generalAssignee: Andrew Walker <arwalker>
Status: RESOLVED FIXED    
Severity: normal    
Priority: NOR    
Version: 1.x   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:

Description Netterfield 2004-08-12 05:34:25 UTC 
Version:           0.99-devel (using KDE 3.2 BRANCH >= 20040204, Mandrake Linux Cooker i586 - Cooker)
Compiler:          gcc version 3.3.2 (Mandrake Linux 10.0 3.3.2-6mdk)
OS:                Linux (i686) release 2.6.2-3mdk

-Create a curve where the X-vector length is different from the Y vector length
(eg, 5 frames of INDEX vs cos from dirfile_maker) and plot it.

select plot->rmb->fit-><curvename>

from the plot dialog, select a fit (eg, fit polynomial degree 3).

The fit is incorrect.

This is because the fits do not assume the curve rule that X[0]->Y[0] and X[xlen-1]->Y[ylen-1], and interpolate inbetween.
Comment 1 Andrew Walker 2004-08-12 22:37:58 UTC 
*** Bug has been marked as fixed ***.