JSXGraph Wiki - User contributions [en]

Contributions

2020-11-14T22:12:57Z

AW:

* [[Geometria básica no plano: áreas e perímetros]]
* [[Binomial distribution]]
* [[Contributions:polar curve exploration]]
* [[Contributions:the cosine and sine functions]]
* [[Cosine]]
* [[Pendulum]]
* [[Polynomials]]
* [[Sine]]
* [[Two squares]]
* [[Snell's law]]

Contributions

2020-11-14T22:12:11Z

AW:

Catmull-Rom splines

2020-11-14T21:50:47Z

AW:

<jsxgraph width="400" height="400" box="box">
var brd = JXG.JSXGraph.initBoard('box', {axis:true, boundingbox: [-5, 5, 5, -5]}),
p = [], c, i;

for (i=0;i<5;i++) {
p.push(brd.create('point', [(Math.random()-0.5)*7,(Math.random()-0.5)*7],{withLabel:true}));
}
c = brd.create('curve', JXG.Math.Numerics.CatmullRomSpline(p), {strokeWidth:3});
</jsxgraph>

===The underlying JavaScript code===
<source lang="javascript">
var brd = JXG.JSXGraph.initBoard('box', {axis:true, boundingbox: [-5, 5, 5, -5]}),
p = [], c, i;

for (i=0;i<5;i++) {
p.push(brd.create('point', [(Math.random()-0.5)*7,(Math.random()-0.5)*7],{withLabel:true}));
}
c = brd.create('curve', JXG.Math.Numerics.CatmullRomSpline(p), {strokeWidth:3});
</source>

[[Category:Examples]]
[[Category:Curves]]
[[Category:Interpolation]]

Catmull-Rom splines

2020-11-14T20:53:06Z

AW:

Interpolation: Neville's algorithm

2020-11-14T20:39:02Z

AW:

<html>
<form><input type="button" value="Add point" onClick="addPoint()"></form>
</html>
<jsxgraph box="box" width="600" height="400">
board = JXG.JSXGraph.initBoard('box', {axis:true, boundingbox: [-5, 5, 7, -3]});
board.suspendUpdate();
var p = [];
p[0] = board.create('point', [-1,2], {size:4});
p[1] = board.create('point', [3,-1], {size:4});
p[2] = board.create('point', [2,1], {size:4});
graph = board.create('curve', JXG.Math.Numerics.Neville(p),{strokeWidth:5,strokeOpacity:0.5});
g = board.create('glider', [graph], {name:'Glider'});
t = board.create('tangent', [g],{dash:1,strokeColor:'green'});
board.unsuspendUpdate();

function addPoint() {
p.push(board.create('point',[(Math.random()-0.5)*10,(Math.random()-0.5)*3],{size:4}));
board.update();
}

</jsxgraph>

=== References ===
* [http://en.wikipedia.org/wiki/Neville%27s_algorithm http://en.wikipedia.org/wiki/Neville's_algorithm]

=== The underlying JavaScript code ===

<source lang="javascript">
board = JXG.JSXGraph.initBoard('box', {axis:true, boundingbox: [-5, 5, 7, -3]});
board.suspendUpdate();
var p = [];
p[0] = board.create('point', [-1,2], {size:4});
p[1] = board.create('point', [3,-1], {size:4});
p[2] = board.create('point', [2,1], {size:4});

var graph = board.create('curve', JXG.Math.Numerics.Neville(p),{strokeWidth:5,strokeOpacity:0.5});
g = board.create('glider', [graph]);
t = board.create('tangent', [g],{dash:1,strokeColor:'green'});
board.unsuspendUpdate();

function addPoint() {
p.push(board.create('point',[(Math.random()-0.5)*10,(Math.random()-0.5)*3],{size:4}));
board.update();
}
</source>

[[Category:Examples]]
[[Category:Calculus]]
[[Category:Curves]]
[[Category:Interpolation]]