shop.balmet.com

Unnamed repository; edit this file 'description' to name the repository.
Log | Files | Refs | README

index.html (2910B)

      1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
      2 <html>
      3 <head>
      4 	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
      5 	<title>Flot Examples: Real-time updates</title>
      6 	<link href="../examples.css" rel="stylesheet" type="text/css">
      7 	<!--[if lte IE 8]><script language="javascript" type="text/javascript" src="../../excanvas.min.js"></script><![endif]-->
      8 	<script language="javascript" type="text/javascript" src="../../jquery.js"></script>
      9 	<script language="javascript" type="text/javascript" src="../../jquery.flot.js"></script>
     10 	<script type="text/javascript">
     11 
     12 	$(function() {
     13 
     14 		// We use an inline data source in the example, usually data would
     15 		// be fetched from a server
     16 
     17 		var data = [],
     18 			totalPoints = 300;
     19 
     20 		function getRandomData() {
     21 
     22 			if (data.length > 0)
     23 				data = data.slice(1);
     24 
     25 			// Do a random walk
     26 
     27 			while (data.length < totalPoints) {
     28 
     29 				var prev = data.length > 0 ? data[data.length - 1] : 50,
     30 					y = prev + Math.random() * 10 - 5;
     31 
     32 				if (y < 0) {
     33 					y = 0;
     34 				} else if (y > 100) {
     35 					y = 100;
     36 				}
     37 
     38 				data.push(y);
     39 			}
     40 
     41 			// Zip the generated y values with the x values
     42 
     43 			var res = [];
     44 			for (var i = 0; i < data.length; ++i) {
     45 				res.push([i, data[i]])
     46 			}
     47 
     48 			return res;
     49 		}
     50 
     51 		// Set up the control widget
     52 
     53 		var updateInterval = 30;
     54 		$("#updateInterval").val(updateInterval).change(function () {
     55 			var v = $(this).val();
     56 			if (v && !isNaN(+v)) {
     57 				updateInterval = +v;
     58 				if (updateInterval < 1) {
     59 					updateInterval = 1;
     60 				} else if (updateInterval > 2000) {
     61 					updateInterval = 2000;
     62 				}
     63 				$(this).val("" + updateInterval);
     64 			}
     65 		});
     66 
     67 		var plot = $.plot("#placeholder", [ getRandomData() ], {
     68 			series: {
     69 				shadowSize: 0	// Drawing is faster without shadows
     70 			},
     71 			yaxis: {
     72 				min: 0,
     73 				max: 100
     74 			},
     75 			xaxis: {
     76 				show: false
     77 			}
     78 		});
     79 
     80 		function update() {
     81 
     82 			plot.setData([getRandomData()]);
     83 
     84 			// Since the axes don't change, we don't need to call plot.setupGrid()
     85 
     86 			plot.draw();
     87 			setTimeout(update, updateInterval);
     88 		}
     89 
     90 		update();
     91 
     92 		// Add the Flot version string to the footer
     93 
     94 		$("#footer").prepend("Flot " + $.plot.version + " &ndash; ");
     95 	});
     96 
     97 	</script>
     98 </head>
     99 <body>
    100 
    101 	<div id="header">
    102 		<h2>Real-time updates</h2>
    103 	</div>
    104 
    105 	<div id="content">
    106 
    107 		<div class="demo-container">
    108 			<div id="placeholder" class="demo-placeholder"></div>
    109 		</div>
    110 
    111 		<p>You can update a chart periodically to get a real-time effect by using a timer to insert the new data in the plot and redraw it.</p>
    112 
    113 		<p>Time between updates: <input id="updateInterval" type="text" value="" style="text-align: right; width:5em"> milliseconds</p>
    114 
    115 	</div>
    116 
    117 	<div id="footer">
    118 		Copyright &copy; 2007 - 2013 IOLA and Ole Laursen
    119 	</div>
    120 
    121 </body>
    122 </html>