Difference between revisions of "Polynomial regression II"

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Line 3: Line 3:
 
brd.suspendUpdate();
 
brd.suspendUpdate();
 
deg = brd.createElement('slider',[[10,90],[100,90],[1,1,10]],{name:'degree',snapWidth:1});     
 
deg = brd.createElement('slider',[[10,90],[100,90],[1,1,10]],{name:'degree',snapWidth:1});     
 +
s = brd.createElement('slider',[[10,70],[100,70],[0,1,3]],{name:'scale'});   
 
pointlist = [];
 
pointlist = [];
 
for (i=0; i<30;i++) {
 
for (i=0; i<30;i++) {
     pointlist.push(brd.createElement('point', [function() { return 200*Math.random(); }, function() { return 30*Math.random()+20;}], { style:4, strokecolor:"#0000a0", name:" "}));  
+
     pointlist.push(brd.createElement('point', [function() { return 200*Math.random(); }, function() { return s.Value()*30*Math.random()+20;}], { style:4, strokecolor:"#0000a0", name:" "}));  
 
}
 
}
  
 
regression = JXG.Math.Numerics.regressionPolynomial(deg,pointlist);  
 
regression = JXG.Math.Numerics.regressionPolynomial(deg,pointlist);  
 
reg = brd.createElement('functiongraph',[regression],{strokeColor:'green'});     
 
reg = brd.createElement('functiongraph',[regression],{strokeColor:'green'});     
t = brd.createElement('text',[20,40,
+
t = brd.createElement('text',[20,-40,
 
             function(){ return "r(x) = " + regression.getTerm();}
 
             function(){ return "r(x) = " + regression.getTerm();}
 
             ],
 
             ],

Revision as of 16:17, 19 August 2009