Least-squares line fitting: Difference between revisions

Revision as of 16:52, 9 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 50: / Line 50: @@
      A[2][1] += r[i][2]*r[i][1];
      A[2][2] += r[i][2]*r[i][2];
+}
+for (i=0;i<3;i++) {
+    for (i=0;i<3;i++) {
+        A[i][j] /= n;
+    }
 }
 console.log(A);