Least-squares line fitting: Difference between revisions
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This little JXSGraph application finds the line - described by homogeneous coordinates [a,b, | This little JXSGraph application finds the line - described by homogeneous coordinates [a,b,c] - that minimizes | ||
:<math> \sum_{i=1}^n (ax_i+by_i+ | :<math> \sum_{i=1}^n (ax_i+by_i+cz_i)^2.</math> | ||
Coming soon... | |||
<jsxgraph width="600" height="600"> | <jsxgraph width="600" height="600"> | ||
/* | |||
var brd = JXG.JSXGraph.initBoard('jxgbox',{boundingbox:[-5,5,5,-5], keepaspectratio:true, axis: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; | var i, p = [], angle, xr, yr, delta = 3.5; | ||
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brd.create('line',[1, z[0], z[1]]); | brd.create('line',[1, z[0], z[1]]); | ||
*/ | |||
</jsxgraph> | </jsxgraph> | ||
Revision as of 20:00, 5 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...
