Least-squares line fitting: Difference between revisions

Revision as of 19:41, 5 November 2010

This little JXSGraph application finds the line - described by homogeneous coordinates [a,b,1] - that minimizes

[math]\displaystyle{ \sum_{i=1}^n (ax_i+by_i+1)^2. }[/math]

@@ Line 4: / Line 4: @@
 <jsxgraph width="600" height="600">
-var brd = JXG.JSXGraph.initBoard('jxgbox',{boundingbox:[-5,5,5,-5], keepaspectratio:true});
+var brd = JXG.JSXGraph.initBoard('jxgbox',{boundingbox:[-5,5,5,-5], keepaspectratio:true, axis:true});
 var i, p = [], angle, xr, yr, delta = 3.5;