Even simpler function plotter: Difference between revisions
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function(){ | function(){ | ||
var c = new JXG.Coords(JXG.COORDS_BY_SCREEN,[0,0],board); | var c = new JXG.Coords(JXG.COORDS_BY_SCREEN,[0,0],board); | ||
return c[1]; | return c.usrCoords[1]; | ||
}, | }, | ||
10 | 10 | ||
Revision as of 07:57, 2 July 2010
The underlying JavaScript code
<input type="text" id="input" value="sin(x)*x">
<input type="button" value="plot" onClick="plotter()">
<input type="button" value="clear all" onClick="clearAll()">
var board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,8,8,-5], axis:true});
function plotter() {
var t = JXG.GeonextParser.geonext2JS(document.getElementById('input').value);
var f = new Function('x','var y = '+t+'; return y;');
board.create('functiongraph',[f]);
}
function clearAll(board) {
JXG.JSXGraph.freeBoard(board);
board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,8,8,-5], axis:true});
}
