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<html>
<head>
<title>JSXGraph example: YahooFinance server module</title>
<link rel="stylesheet" type="text/css" href="../distrib/jsxgraph.css" />
<script type="text/javascript" src="../distrib/jquery.min.js"></script>
<script type="text/javascript" src="../src/loadjsxgraph.js"></script>
</head>
<body>
<h2>Get shareprices with YahooFinance server module</h2>
In case there's no internet connection goto <a href="fakeshareprice.html">fake data</a> example.<br />
<select id="stock"><option value="^GDAXI">DAX</option><option value="^DJI">Dow Jones</option></select>
<a href="#" onclick="change();">Load this stock quote</a>
<div style="width:800px">
<div id="jxgbox" class="jxgbox" style="width:600px; height:450px; float:left"></div>
</div>
<div id="debug" style="display:block;"></div>
<script type="text/javascript">
/* <![CDATA[ */
var x = [], y = [], g, board, val, hi, lo, share, timer, restart = true;
JXG.Server.loadModule('YahooFinance');
var init = function (data) {
hi = data.max*1.00002;
lo = data.min*0.99998;
board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [0, hi, 200, lo], axis: true, grid: false});
board.createElement('axis',[[0,lo],[1,lo]]);
}
var cb = function (data) {
try {
x.push(x.length+1);
y.push(data.price);
val = data.price;
if (restart) {
restart = false
g = board.create('curve', [x,y],{strokeWidth:3, strokeColor:'green',shadow:false});
txt = board.create('text', [3,(hi+lo)*0.5,function(){return share + ' = '+val;}],{fontSize:'14px'});
reg = board.create('functiongraph',[JXG.Math.Numerics.regressionPolynomial(1,g.dataX,g.dataY)],{strokecolor:'red',dash:3});
} else {
g.dataX = x;
g.dataY = y;
}
board.update();
} catch (e) { $('#debug').html(e); }
}
function change() {
// clean up
if(board) {
board.removeObject([g, txt, reg]);
JXG.JSXGraph.freeBoard(board);
delete g;
delete txt;
delete reg;
delete board;
}
if(timer)
window.clearInterval(timer);
share = $('#stock').val();
restart = true;
x = [];
y = [];
JXG.Server.modules.YahooFinance.getMinMax(share, init);
timer = window.setInterval('JXG.Server.modules.YahooFinance.getCurrentSharePrice("' + share + '", cb);', 1300);
}
/* ]]> */
</script>
</body>
</html>
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