Thank you again for your help about the JSXGraphPlugin and the subsequent
explications.
I try few exemples from
http://jsxgraph.uni-bayreuth.de/wiki/index.php/Category:Examples,
they are generaly working.
But I try to put the button "add point" to the example "Lagrange interpolation"
like the original, but I fail. The button appears but it's not working.
FireBug log show 29 errors the last one is "addPoint is not defined"....
I dont know what append, it's like if the definition of function addpoint()
it's
not effective.
Thats the code in my tiddler:
<html>
<form><input type="button" value="Add point" onClick="addPoint()"></form>
<div id="box" class="jxgbox" style="height:400px; width:600px;"></div>
</html>
<script>
var board = JXG.JSXGraph.initBoard('box', {originX: 250, originY: 250, unitX:
50, unitY: 25, axis:true});
var p = [];
p[0] = board.create('point', [-1,2], {style:6});
p[1] = board.create('point', [3,-1], {style:6});
p[2] = board.create('point', [-3,0], {style:6});
var graph = board.create('functiongraph', [board.lagrangePolynomial(p), -10,
10]);
function addPoint() {
p.push(board.create('point',[(Math.random()-0.5)*10,(Math.random()-0.5)*3],{style:6}));
board.update();
}
</script>
Thank
Marc La Raison
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