Least-squares line fitting: Difference between revisions

Revision as of 11:15, 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...

@@ Line 15: / Line 15: @@
 for (i=0;i<5;i++) {
    yr = 10*(Math.random()-0.5);
-   xr = 0.*xr+delta*(Math.random()-0.5) +1.0;
+   xr = 0.*yr+delta*(Math.random()-0.5) +1.0;
    p.push(brd.create('point',[xr, yr], {withLabel:false}));
 }