Least-squares line fitting: Difference between revisions
From JSXGraph Wiki
A WASSERMANN (talk | contribs) No edit summary |
A WASSERMANN (talk | contribs) No edit summary |
||
Line 42: | Line 42: | ||
var xm = z[0]*0.5; | var xm = z[0]*0.5; | ||
var ym = z[1]*0.5; | var ym = z[1]*0.5; | ||
var r = Math.sqrt(z[2] | var r = Math.sqrt(z[2]+xm*xm+ym*ym); | ||
brd.create('circle',[ [ | brd.create('circle',[ [xm,ym], r]); | ||
//alert([xm,ym,r].toString()); | //alert([xm,ym,r].toString()); | ||
/* | /* |
Revision as of 11:51, 7 November 2010
This little JXSGraph application finds the line - described by homogeneous coordinates [a,b,c] - that minimizes
- [math]\displaystyle{ \sum_{i=1}^n (ax_i+by_i+cz_i)^2. }[/math]
Coming soon...