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92 lines
2.7 KiB
92 lines
2.7 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<title>Data from datasource</title>
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<style>
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body {font: 10pt arial;}
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</style>
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<script type="text/javascript" src="http://www.google.com/jsapi"></script>
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<script type="text/javascript" src="../graph3d.js"></script>
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<script type="text/javascript">
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var DATASOURCE_URL = "datasource_csv_to_json.php";
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var REFRESH_INTERVAL = 1000; // milliseconds
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var data = null;
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var graph = null;
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var query = null;
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var draw = function() {
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// create an empty table to initialized the graph
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data = new google.visualization.DataTable();
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data.addColumn('number', 'x');
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data.addColumn('number', 'y');
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data.addColumn('number', 'z');
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data.addColumn('number', 'color');
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// specify options
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var options = {
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width: "600px",
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height: "600px",
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style: "dot-color",
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showPerspective: true,
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showGrid: true,
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showShadow: false,
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keepAspectRatio: true,
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verticalRatio: 0.5,
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cameraPosition: {
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distance: 1.4,
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horizontal: 0.0,
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vertical: 1.0
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}
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};
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// Instantiate our graph object.
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graph = new links.Graph3d(document.getElementById('graph'));
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// Draw our graph with the created data and options
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graph.draw(data, options);
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refresh();
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};
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google.load("visualization", "1");
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// Set callback to run when API is loaded
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google.setOnLoadCallback(draw);
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// callback function, executed when the response data is received
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var redraw = function(response) {
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data = response.getDataTable();
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graph.redraw(data);
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document.getElementById("info").innerHTML = "Updated " + new Date();
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};
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var refresh = function() {
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// send the datasource request
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query && query.abort();
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query = new google.visualization.Query(DATASOURCE_URL);
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query.send(redraw);
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window.setTimeout(refresh, REFRESH_INTERVAL);
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}
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</script>
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</head>
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<body>
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<h1>Refresh data from external datasource</h1>
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<p>
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This example refreshes once per second the data from an external datasource.
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</p>
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<p style="font-style:italic;">
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Note: this example works only when running it on a PHP server,
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as the datasource is a php file.
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</p>
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<div id="graph"></div>
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<div id="info"></div>
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</body>
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</html>
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