# Difference between revisions of "Cubic spline interpolation"

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var g = board.createElement('glider', [1.5,0,c], {name:'',style:8}); | var g = board.createElement('glider', [1.5,0,c], {name:'',style:8}); | ||

+ | var t = board.createElement('tangent', [g], {dash:2,strokeColor:'#aa0000'}); | ||

+ | |||

function addPoint() { | function addPoint() { |

## Revision as of 13:16, 30 March 2009

Constructs a cubic spline through given points. Points can be added by clicking on "Add point".

### References

### The underlying JavaScript code

```
board = JXG.JSXGraph.initBoard('box', {originX: 250, originY: 250, unitX: 50, unitY: 25});
// Axes
b1axisx = board.createElement('axis', [[0,0], [1,0]], {});
b1axisy = board.createElement('axis', [[0,0], [0,1]], {});
var p = [];
p[0] = board.createElement('point', [-1,2], {style:6});
p[1] = board.createElement('point', [0,-1], {style:6});
p[2] = board.createElement('point', [1,0], {style:6});
p[3] = board.createElement('point', [2,1], {style:6});
var c = board.createElement('spline', p, {strokeWidth:3});
function addPoint() {
p.push(board.createElement('point',[(Math.random()-0.5)*10,(Math.random()-0.5)*3],{style:6}));
board.update();
}
```